perl 2.0 (no announcement message available)perl-2.0

Some of the enhancements from Perl1 included:

    * New regexp routines derived from Henry Spencer's.
          o Support for /(foo|bar)/.
          o Support for /(foo)*/ and /(foo)+/.
          o \s for whitespace, \S for non-, \d for digit, \D nondigit 
    * Local variables in blocks, subroutines and evals.
    * Recursive subroutine calls are now supported.
    * Array values may now be interpolated into lists: unlink 'foo', 'bar', @trashcan, 'tmp';
    * File globbing.
    * Use of <> in array contexts returns the whole file or glob list.
    * New iterator for normal arrays, foreach, that allows both read and write.
    * Ability to open pipe to a forked off script for secure pipes in setuid scripts.
    * File inclusion via do 'foo.pl';
    * More file tests, including -t to see if, for instance, stdin is a terminal. File tests now behave in a more correct manner. You can do file tests on filehandles as well as filenames. The special filetests -T and -B test a file to see if it's text or binary.
    * An eof can now be used on each file of the <> input for such purposes as resetting the line numbers or appending to each file of an inplace edit.
    * Assignments can now function as lvalues, so you can say things like ($HOST = $host) =~ tr/a-z/A-Z/; ($obj = $src) =~ s/\.c$/.o/;
    * You can now do certain file operations with a variable which holds the name of a filehandle, e.g. open(++$incl,$includefilename); $foo = <$incl>;
    * Warnings are now available (with -w) on use of uninitialized variables and on identifiers that are mentioned only once, and on reference to various undefined things.
    * There is now a wait operator.
    * There is now a sort operator.
    * The manual is now not lying when it says that perl is generally faster than sed. I hope.

28 files changed, 1477 insertions, 0 deletions

diff --git a/eg/ADB b/eg/ADB
new file mode 100644
index 0000000000..1a43b90380
--- /dev/null
+++ b/eg/ADB
@@ -0,0 +1,8 @@
+#!/usr/bin/perl
+
+# $Header: ADB,v 2.0 88/06/05 00:16:39 root Exp $
+
+# This script is only useful when used in your crash directory.
+
+$num = shift;
+exec 'adb', '-k', "vmunix.$num", "vmcore.$num";
diff --git a/eg/README b/eg/README
new file mode 100644
index 0000000000..bec7538f83
--- /dev/null
+++ b/eg/README
@@ -0,0 +1,18 @@
+This stuff is supplied on an as-is basis--little attempt has been made to make
+any of it portable.  It's mostly here to give you an idea of what perl code
+looks like, and what tricks and idioms are used.
+
+System administrators responsible for many computers will enjoy the items
+down in the g directory very much.  The scan directory contains the beginnings
+of a system to check on and report various kinds of anomalies.
+
+If you machine doesn't support #!, the first thing you'll want to do is
+replace the #! with a couple of lines that look like this:
+
+	eval "exec /usr/bin/perl -S $0 $*"
+		if $running_under_some_shell;
+
+being sure to include any flags that were on the #! line.  A supplied script
+called "nih" will translate perl scripts in place for you:
+
+	nih g/g??
diff --git a/eg/changes b/eg/changes
new file mode 100644
index 0000000000..db9b7b1d53
--- /dev/null
+++ b/eg/changes
@@ -0,0 +1,34 @@
+#!/usr/bin/perl -P
+
+# $Header: changes,v 2.0 88/06/05 00:16:41 root Exp $
+
+($dir, $days) = @ARGV;
+$dir = '/' if $dir eq '';
+$days = '14' if $days eq '';
+
+# Masscomps do things differently from Suns
+
+#if defined(mc300) || defined(mc500) || defined(mc700)
+open(Find, "find $dir -mtime -$days -print |") ||
+	die "changes: can't run find";
+#else
+open(Find, "find $dir \\( -fstype nfs -prune \\) -o -mtime -$days -ls |") ||
+	die "changes: can't run find";
+#endif
+
+while (<Find>) {
+
+#if defined(mc300) || defined(mc500) || defined(mc700)
+    $x = `/bin/ls -ild $_`;
+    $_ = $x;
+    ($inode,$perm,$links,$owner,$group,$size,$month,$day,$time,$name)
+      = split(' ');
+#else
+    ($inode,$blocks,$perm,$links,$owner,$group,$size,$month,$day,$time,$name)
+      = split(' ');
+#endif
+
+    printf("%10s%3s %-8s %-8s%9s %3s %2s %s\n",
+	    $perm,$links,$owner,$group,$size,$month,$day,$name);
+}
+
diff --git a/eg/dus b/eg/dus
new file mode 100644
index 0000000000..8c7ff94340
--- /dev/null
+++ b/eg/dus
@@ -0,0 +1,22 @@
+#!/usr/bin/perl
+
+# $Header: dus,v 2.0 88/06/05 00:16:44 root Exp $
+
+# This script does a du -s on any directories in the current directory that
+# are not mount points for another filesystem.
+
+($mydev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+   $blksize,$blocks) = stat('.');
+
+open(ls,'ls -F1|');
+
+while (<ls>) {
+    chop;
+    next unless s|/$||;
+    ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+       $blksize,$blocks) = stat($_);
+    next unless $dev == $mydev;
+    push(@ary,$_);
+}
+
+exec 'du', '-s', @ary;
diff --git a/eg/findcp b/eg/findcp
new file mode 100644
index 0000000000..57cac2e367
--- /dev/null
+++ b/eg/findcp
@@ -0,0 +1,53 @@
+#!/usr/bin/perl
+
+# $Header: findcp,v 2.0 88/06/05 00:16:47 root Exp $
+
+# This is a wrapper around the find command that pretends find has a switch
+# of the form -cp host:destination.  It presumes your find implements -ls.
+# It uses tar to do the actual copy.  If your tar knows about the I switch
+# you may prefer to use findtar, since this one has to do the tar in batches.
+
+sub copy {
+    `tar cf - $list | rsh $desthost cd $destdir '&&' tar xBpf -`;
+}
+
+$sourcedir = $ARGV[0];
+if ($sourcedir =~ /^\//) {
+    $ARGV[0] = '.';
+    unless (chdir($sourcedir)) { die "Can't find directory: $sourcedir"; }
+}
+
+$args = join(' ',@ARGV);
+if ($args =~ s/-cp *([^ ]+)/-ls/) {
+    $dest = $1;
+    if ($dest =~ /(.*):(.*)/) {
+	$desthost = $1;
+	$destdir = $2;
+    }
+    else {
+	die "Malformed destination--should be host:directory";
+    }
+}
+else {
+    die("No destination specified");
+}
+
+open(find,"find $args |") || die "Can't run find for you.";
+
+while (<find>) {
+    @x = split(' ');
+    if ($x[2] =~ /^d/) { next;}
+    chop($filename = $x[10]);
+    if (length($list) > 5000) {
+	do copy();
+	$list = '';
+    }
+    else {
+	$list .= ' ';
+    }
+    $list .= $filename;
+}
+
+if ($list) {
+    do copy();
+}
diff --git a/eg/findtar b/eg/findtar
new file mode 100644
index 0000000000..8b604b396f
--- /dev/null
+++ b/eg/findtar
@@ -0,0 +1,17 @@
+#!/usr/bin/perl
+
+# $Header: findtar,v 2.0 88/06/05 00:16:49 root Exp $
+
+# findtar takes find-style arguments and spits out a tarfile on stdout.
+# It won't work unless your find supports -ls and your tar the I flag.
+
+$args = join(' ',@ARGV);
+open(find,"/usr/bin/find $args -ls |") || die "Can't run find for you.";
+
+open(tar,"| /bin/tar cIf - -") || die "Can't run tar for you.";
+
+while (<find>) {
+    @x = split(' ');
+    if ($x[2] =~ /^d/) { print tar '-d ';}
+    print tar $x[10],"\n";
+}
diff --git a/eg/g/gcp b/eg/g/gcp
new file mode 100644
index 0000000000..6b4a9a79f7
--- /dev/null
+++ b/eg/g/gcp
@@ -0,0 +1,114 @@
+#!/usr/bin/perl
+
+# $Header: gcp,v 2.0 88/06/05 00:17:02 root Exp $
+
+# Here is a script to do global rcps.  See man page.
+
+$#ARGV >= 1 || die "Not enough arguments.\n";
+
+if ($ARGV[0] eq '-r') {
+    $rcp = 'rcp -r';
+    shift;
+} else {
+    $rcp = 'rcp';
+}
+$args = $rcp;
+$dest = $ARGV[$#ARGV];
+
+$SIG{'QUIT'} = 'CLEANUP';
+$SIG{'INT'} = 'CONT';
+
+while ($arg = shift) {
+    if ($arg =~ /^([-a-zA-Z0-9_+]+):/) {
+	if ($systype && $systype ne $1) {
+	    die "Can't mix system type specifers ($systype vs $1).\n";
+	}
+	$#ARGV < 0 || $arg !~ /:$/ || die "No source file specified.\n";
+	$systype = $1;
+	$args .= " $arg";
+    } else {
+	if ($#ARGV >= 0) {
+	    if ($arg =~ /^[\/~]/) {
+		$arg =~ /^(.*)\// && ($dir = $1);
+	    } else {
+		if (!$pwd) {
+		    chop($pwd = `pwd`);
+		}
+		$dir = $pwd;
+	    }
+	}
+	if ($olddir && $dir ne $olddir && $dest =~ /:$/) {
+	    $args .= " $dest$olddir; $rcp";
+	}
+	$olddir = $dir;
+	$args .= " $arg";
+    }
+}
+
+die "No system type specified.\n" unless $systype;
+
+$args =~ s/:$/:$olddir/;
+
+chop($thishost = `hostname`);
+
+$one_of_these = ":$systype:";
+if ($systype =~ s/\+/[+]/g) {
+    $one_of_these =~ s/\+/:/g;
+}
+$one_of_these =~ s/-/:-/g;
+
+@ARGV = ();
+push(@ARGV,'.grem') if -f '.grem';
+push(@ARGV,'.ghosts') if -f '.ghosts';
+push(@ARGV,'/etc/ghosts');
+
+$remainder = '';
+
+line: while (<>) {
+    s/[ \t]*\n//;
+    if (!$_ || /^#/) {
+	next line;
+    }
+    if (/^([a-zA-Z_0-9]+)=(.+)/) {
+	$name = $1; $repl = $2;
+	$repl =~ s/\+/:/g;
+	$repl =~ s/-/:-/g;
+	$one_of_these =~ s/:$name:/:$repl:/;
+	$repl =~ s/:/:-/g;
+	$one_of_these =~ s/:-$name:/:-$repl:/g;
+	next line;
+    }
+    @gh = split(' ');
+    $host = $gh[0];
+  next line if $host eq $thishost;	# should handle aliases too
+    $wanted = 0;
+    foreach $class (@gh) {
+	$wanted++ if index($one_of_these,":$class:") >= 0;
+	$wanted = -9999 if index($one_of_these,":-$class:") >= 0;
+    }
+    if ($wanted > 0) {
+	($cmd = $args) =~ s/[ \t]$systype:/ $host:/g;
+	print "$cmd\n";
+	$result = `$cmd 2>&1`;
+	$remainder .= "$host+" if
+	    $result =~ /Connection timed out|Permission denied/;
+	print $result;
+    }
+}
+
+if ($remainder) {
+    chop($remainder);
+    open(grem,">.grem") || (printf stderr "Can't create .grem\n");
+    print grem 'rem=', $remainder, "\n";
+    close(grem);
+    print 'rem=', $remainder, "\n";
+}
+
+sub CLEANUP {
+    exit;
+}
+
+sub CONT {
+    print "Continuing...\n";	# Just ignore the signal that kills rcp
+    $remainder .= "$host+";
+}
diff --git a/eg/g/gcp.man b/eg/g/gcp.man
new file mode 100644
index 0000000000..83c5d85ca4
--- /dev/null
+++ b/eg/g/gcp.man
@@ -0,0 +1,77 @@
+.\" $Header: gcp.man,v 2.0 88/06/05 00:17:05 root Exp $
+.TH GCP 1C "13 May 1988"
+.SH NAME
+gcp \- global file copy
+.SH SYNOPSIS
+.B gcp
+file1 file2
+.br
+.B gcp
+[
+.B \-r
+] file ... directory
+.SH DESCRIPTION
+.I gcp
+works just like rcp(1C) except that you may specify a set of hosts to copy files
+from or to.
+The host sets are defined in the file /etc/ghosts.
+(An individual host name can be used as a set containing one member.)
+You can give a command like
+
+	gcp /etc/motd sun:
+
+to copy your /etc/motd file to /etc/motd on all the Suns.
+If, on the other hand, you say
+
+	gcp /a/foo /b/bar sun:/tmp
+
+then your files will be copied to /tmp on all the Suns.
+The general rule is that if you don't specify the destination directory,
+files go to the same directory they are in currently.
+.P
+You may specify the union of two or more sets by using + as follows:
+
+	gcp /a/foo /b/bar 750+mc:
+
+which will copy /a/foo to /a/foo on all 750's and Masscomps, and then copy
+/b/bar to /b/bar on all 750's and Masscomps.
+.P
+Commonly used sets should be defined in /etc/ghosts.
+For example, you could add a line that says
+
+	pep=manny+moe+jack
+
+Another way to do that would be to add the word "pep" after each of the host
+entries:
+
+	manny	sun3 pep
+.br
+	moe		sun3 pep
+.br
+	jack		sun3 pep
+
+Hosts and sets of host can also be excluded:
+
+	foo=sun-sun2
+
+Any host so excluded will never be included, even if a subsequent set on the
+line includes it:
+
+	foo=abc+def
+.br
+	bar=xyz-abc+foo
+
+comes out to xyz+def.
+
+You can define private host sets by creating .ghosts in your current directory
+with entries just like /etc/ghosts.
+Also, if there is a file .grem, it defines "rem" to be the remaining hosts
+from the last gsh or gcp that didn't succeed everywhere.
+.PP
+Interrupting with a SIGINT will cause the rcp to the current host to be skipped
+and execution resumed with the next host.
+To stop completely, send a SIGQUIT.
+.SH SEE ALSO
+rcp(1C)
+.SH BUGS
+All the bugs of rcp, since it calls rcp.
diff --git a/eg/g/ged b/eg/g/ged
new file mode 100644
index 0000000000..bb7c222b3a
--- /dev/null
+++ b/eg/g/ged
@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+
+# $Header: ged,v 2.0 88/06/05 00:17:08 root Exp $
+
+# Does inplace edits on a set of files on a set of machines.
+#
+# Typical invokation:
+#
+#	ged vax+sun /etc/passwd
+#	s/Freddy/Freddie/;
+#	^D
+#
+
+$class = shift;
+$files = join(' ',@ARGV);
+
+die "Usage: ged class files <perlcmds\n" unless $files;
+
+exec "gsh", $class, "-d", "perl -pi.bak - $files";
+
+die "Couldn't execute gsh for some reason, stopped";
diff --git a/eg/g/ghosts b/eg/g/ghosts
new file mode 100644
index 0000000000..96ec771c4a
--- /dev/null
+++ b/eg/g/ghosts
@@ -0,0 +1,33 @@
+# This first section gives alternate sets defined in terms of the sets given
+# by the second section.  The order is important--all references must be
+# forward references.
+
+Nnd=sun-nd
+all=sun+mc+vax
+baseline=sun+mc
+sun=sun2+sun3
+vax=750+8600
+pep=manny+moe+jack
+
+# This second section defines the basic sets.  Each host should have a line
+# that specifies which sets it is a member of.  Extra sets should be separated
+# by white space.  (The first section isn't strictly necessary, since all sets
+# could be defined in the second section, but then it wouldn't be so readable.)
+
+basvax	8600	src
+cdb0	sun3		sys
+cdb1	sun3		sys
+cdb2	sun3		sys
+chief	sun3	src
+tis0	sun3
+manny	sun3		sys
+moe	sun3		sys
+jack	sun3		sys
+disney	sun3		sys
+huey	sun3		nd
+dewey	sun3		nd
+louie	sun3		nd
+bizet	sun2	src	sys
+gif0	mc	src
+mc0	mc
+dtv0	mc
diff --git a/eg/g/gsh b/eg/g/gsh
new file mode 100644
index 0000000000..50ce1f7b00
--- /dev/null
+++ b/eg/g/gsh
@@ -0,0 +1,116 @@
+#!/bin/perl
+
+# $Header: gsh,v 2.0 88/06/05 00:17:20 root Exp $
+
+# Do rsh globally--see man page
+
+$SIG{'QUIT'} = 'quit';			# install signal handler for SIGQUIT
+
+sub getswitches {
+    while ($ARGV[0] =~ /^-/) {		# parse switches
+	$ARGV[0] =~ /^-h/ && ($showhost++,$silent++,shift,next);
+	$ARGV[0] =~ /^-s/ && ($silent++,shift,next);
+	$ARGV[0] =~ /^-d/ && ($dodist++,shift,next);
+	$ARGV[0] =~ /^-n/ && ($n=' -n',shift,next);
+	$ARGV[0] =~ /^-l/ && ($l=' -l ' . $ARGV[1],shift,shift,next);
+	last;
+    }
+}
+
+do getswitches();			# get any switches before class
+$systype = shift;			# get name representing set of hosts
+do getswitches();			# same switches allowed after class
+
+if ($dodist) {				# distribute input over all rshes?
+    `cat >/tmp/gsh$$`;			#  get input into a handy place
+    $dist = " </tmp/gsh$$";		#  each rsh takes input from there
+}
+
+$cmd = join(' ',@ARGV);			# remaining args constitute the command
+$cmd =~ s/'/'"'"'/g;			# quote any embedded single quotes
+
+$one_of_these = ":$systype:";		# prepare to expand "macros"
+$one_of_these =~ s/\+/:/g;		# we hope to end up with list of
+$one_of_these =~ s/-/:-/g;		#  colon separated attributes
+
+@ARGV = ();
+push(@ARGV,'.grem') if -f '.grem';
+push(@ARGV,'.ghosts') if -f '.ghosts';
+push(@ARGV,'/etc/ghosts');
+
+$remainder = '';
+
+line: while (<>) {		# for each line of ghosts
+
+    s/[ \t]*\n//;			# trim trailing whitespace
+    if (!$_ || /^#/) {			# skip blank line or comment
+	next line;
+    }
+
+    if (/^(\w+)=(.+)/) {		# a macro line?
+	$name = $1; $repl = $2;
+	$repl =~ s/\+/:/g;
+	$repl =~ s/-/:-/g;
+	$one_of_these =~ s/:$name:/:$repl:/;	# do expansion in "wanted" list
+	$repl =~ s/:/:-/g;
+	$one_of_these =~ s/:-$name:/:-$repl:/;
+	next line;
+    }
+
+    # we have a normal line
+
+    @attr = split(' ');			# a list of attributes to match against
+					#   which we put into an array
+    $host = $attr[0];			# the first attribute is the host name
+    if ($showhost) {
+	$showhost = "$host:\t";
+    }
+
+    $wanted = 0;
+    foreach $attr (@attr) {		# iterate over attribute array
+	$wanted++ if index($one_of_these,":$attr:") >= 0;
+	$wanted = -9999 if index($one_of_these,":-$attr:") >= 0;
+    }
+    if ($wanted > 0) {
+	print "rsh $host$l$n '$cmd'\n" unless $silent;
+	$SIG{'INT'} = 'DEFAULT';
+	if (open(pipe,"rsh $host$l$n '$cmd'$dist 2>&1|")) {	# start an rsh
+	    $SIG{'INT'} = 'cont';
+	    for ($iter=0; <pipe>; $iter++) {
+		unless ($iter) {
+		    $remainder .= "$host+"
+			if /Connection timed out|Permission denied/;
+		}
+		print $showhost,$_;
+	    }
+	    close(pipe);
+	} else {
+	    $SIG{'INT'} = 'cont';
+	    print "(Can't execute rsh.)\n";
+	}
+    }
+}
+
+unlink "/tmp/gsh$$" if $dodist;
+
+if ($remainder) {
+    chop($remainder);
+    open(grem,">.grem") || (printf stderr "Can't make a .grem file\n");
+    print grem 'rem=', $remainder, "\n";
+    close(grem);
+    print 'rem=', $remainder, "\n";
+}
+
+# here are a couple of subroutines that serve as signal handlers
+
+sub cont {
+    print "\rContinuing...\n";
+    $remainder .= "$host+";
+}
+
+sub quit {
+    $| = 1;
+    print "\r";
+    $SIG{'INT'} = '';
+    kill 2, $$;
+}
diff --git a/eg/g/gsh.man b/eg/g/gsh.man
new file mode 100644
index 0000000000..4522129df0
--- /dev/null
+++ b/eg/g/gsh.man
@@ -0,0 +1,80 @@
+.\" $Header: gsh.man,v 2.0 88/06/05 00:17:23 root Exp $
+.TH GSH 8 "13 May 1988"
+.SH NAME
+gsh \- global shell
+.SH SYNOPSIS
+.B gsh
+[options]
+.I host
+[options] 
+.I command
+.SH DESCRIPTION
+.I gsh
+works just like rsh(1C) except that you may specify a set of hosts to execute
+the command on.
+The host sets are defined in the file /etc/ghosts.
+(An individual host name can be used as a set containing one member.)
+You can give a command like
+
+	gsh sun /etc/mungmotd
+
+to run /etc/mungmotd on all your Suns.
+.P
+You may specify the union of two or more sets by using + as follows:
+
+	gsh 750+mc /etc/mungmotd
+
+which will run mungmotd on all 750's and Masscomps.
+.P
+Commonly used sets should be defined in /etc/ghosts.
+For example, you could add a line that says
+
+	pep=manny+moe+jack
+
+Another way to do that would be to add the word "pep" after each of the host
+entries:
+
+	manny	sun3 pep
+.br
+	moe		sun3 pep
+.br
+	jack		sun3 pep
+
+Hosts and sets of host can also be excluded:
+
+	foo=sun-sun2
+
+Any host so excluded will never be included, even if a subsequent set on the
+line includes it:
+
+	foo=abc+def
+	bar=xyz-abc+foo
+
+comes out to xyz+def.
+
+You can define private host sets by creating .ghosts in your current directory
+with entries just like /etc/ghosts.
+Also, if there is a file .grem, it defines "rem" to be the remaining hosts
+from the last gsh or gcp that didn't succeed everywhere.
+
+Options include all those defined by rsh, as well as
+
+.IP "\-d" 8
+Causes gsh to collect input till end of file, and then distribute that input
+to each invokation of rsh.
+.IP "\-h" 8
+Rather than print out the command followed by the output, merely prepends the
+host name to each line of output.
+.IP "\-s" 8
+Do work silently.
+.PP
+Interrupting with a SIGINT will cause the rsh to the current host to be skipped
+and execution resumed with the next host.
+To stop completely, send a SIGQUIT.
+.SH SEE ALSO
+rsh(1C)
+.SH BUGS
+All the bugs of rsh, since it calls rsh.
+
+Also, will not properly return data from the remote execution that contains
+null characters.
diff --git a/eg/myrup b/eg/myrup
new file mode 100644
index 0000000000..c32c99ccd2
--- /dev/null
+++ b/eg/myrup
@@ -0,0 +1,29 @@
+#!/usr/bin/perl
+
+# $Header: myrup,v 2.0 88/06/05 00:16:51 root Exp $
+
+# This was a customization of ruptime requested by someone here who wanted
+# to be able to find the least loaded machine easily.  It uses the
+# /etc/ghosts file that's defined for gsh and gcp to prune down the
+# number of entries to those hosts we have administrative control over.
+
+print "node    load (u)\n------- --------\n";
+
+open(ghosts,'/etc/ghosts') || die "Can't open /etc/ghosts";
+line: while (<ghosts>) {
+    next line if /^#/;
+    next line if /^$/;
+    next line if /=/;
+    ($host) = split;
+    $wanted{$host} = 1;
+}
+
+open(ruptime,'ruptime|') || die "Can't run ruptime";
+open(sort,'|sort +1n');
+
+while (<ruptime>) {
+    ($host,$upness,$foo,$users,$foo,$foo,$load) = split(/[\s,]+/);
+    if ($wanted{$host} && $upness eq 'up') {
+	printf sort "%s\t%s (%d)\n", $host, $load, $users;
+    }
+}
diff --git a/eg/nih b/eg/nih
new file mode 100644
index 0000000000..15cb60f496
--- /dev/null
+++ b/eg/nih
@@ -0,0 +1,10 @@
+eval "exec /usr/bin/perl -Spi.bak $0 $*"
+	if $running_under_some_shell;
+
+# $Header: nih,v 2.0 88/06/05 00:16:54 root Exp $
+
+# This script makes #! scripts directly executable on machines that don't
+# support #!.  It edits in place any scripts mentioned on the command line.
+
+s|^#!(.*)|#!$1\neval "exec $1 -S \$0 \$*"\n\tif \$running_under_some_shell;|
+	if $. == 1;
diff --git a/eg/rmfrom b/eg/rmfrom
new file mode 100644
index 0000000000..0fca30413e
--- /dev/null
+++ b/eg/rmfrom
@@ -0,0 +1,7 @@
+#!/usr/bin/perl -n
+
+# $Header: rmfrom,v 2.0 88/06/05 00:16:57 root Exp $
+
+# A handy (but dangerous) script to put after a find ... -print.
+
+chop; unlink;
diff --git a/eg/scan/scan_df b/eg/scan/scan_df
new file mode 100644
index 0000000000..ca316425e4
--- /dev/null
+++ b/eg/scan/scan_df
@@ -0,0 +1,51 @@
+#!/usr/bin/perl -P
+
+# $Header: scan_df,v 2.0 88/06/05 00:17:56 root Exp $
+
+# This report points out filesystems that are in danger of overflowing.
+
+(chdir '/usr/adm/private/memories') || die "Can't cd.";
+`df >newdf`;
+open(Df, 'olddf');
+
+while (<Df>) {
+    ($fs,$kbytes,$used,$avail,$capacity,$mounted_on) = split;
+    next if $fs =~ /:/;
+    next if $fs eq '';
+    $oldused{$fs} = $used;
+}
+
+open(Df, 'newdf') || die "scan_df: can't open newdf";
+
+while (<Df>) {
+    ($fs,$kbytes,$used,$avail,$capacity,$mounted_on) = split;
+    next if $fs =~ /:/;
+    next if $fs eq '';
+    $oldused = $oldused{$fs};
+    next if ($oldused == $used && $capacity < 99);	# inactive filesystem
+    if ($capacity >= 90) {
+#if defined(mc300) || defined(mc500) || defined(mc700)
+	$_ = substr($_,0,13) . '        ' . substr($_,13,1000);
+	$kbytes /= 2;		# translate blocks to K
+	$used /= 2;
+	$oldused /= 2;
+	$avail /= 2;
+#endif
+	$diff = int($used - $oldused);
+	if ($avail < $diff * 2) {	# mark specially if in danger
+	    $mounted_on .= ' *';
+	}
+	next if $diff < 50 && $mounted_on eq '/';
+	$fs =~ s|/dev/||;
+	if ($diff >= 0) {
+	    $diff = '(+' . $diff . ')';
+	}
+	else {
+	    $diff = '(' . $diff . ')';
+	}
+	printf "%-8s%8d%8d %-8s%8d%7s    %s\n",
+	    $fs,$kbytes,$used,$diff,$avail,$capacity,$mounted_on;
+    }
+}
+
+rename('newdf','olddf');
diff --git a/eg/scan/scan_last b/eg/scan/scan_last
new file mode 100644
index 0000000000..25d7843e30
--- /dev/null
+++ b/eg/scan/scan_last
@@ -0,0 +1,57 @@
+#!/usr/bin/perl -P
+
+# $Header: scan_last,v 2.0 88/06/05 00:17:58 root Exp $
+
+# This reports who was logged on at weird hours
+
+($dy, $mo, $lastdt) = split(/ +/,`date`);
+
+open(Last, 'exec last 2>&1 |') || die "scan_last: can't run last";
+
+while (<Last>) {
+#if defined(mc300) || defined(mc500) || defined(mc700)
+    $_ = substr($_,0,19) . substr($_,23,100);
+#endif
+    next if /^$/;
+    (print),next if m|^/|;
+    $login  = substr($_,0,8);
+    $tty    = substr($_,10,7);
+    $from   = substr($_,19,15);
+    $day    = substr($_,36,3);
+    $mo     = substr($_,40,3);
+    $dt     = substr($_,44,2);
+    $hr     = substr($_,47,2);
+    $min    = substr($_,50,2);
+    $dash   = substr($_,53,1);
+    $tohr   = substr($_,55,2);
+    $tomin  = substr($_,58,2);
+    $durhr  = substr($_,63,2);
+    $durmin = substr($_,66,2);
+    
+    next unless $hr;
+    next if $login eq 'reboot  ';
+    next if $login eq 'shutdown';
+
+    if ($dt != $lastdt) {
+	if ($lastdt < $dt) {
+	    $seen += $dt - $lastdt;
+	}
+	else {
+	    $seen++;
+	}
+	$lastdt = $dt;
+    }
+
+    $inat = $hr + $min / 60;
+    if ($tohr =~ /^[a-z]/) {
+	$outat = 12;		# something innocuous
+    } else {
+	$outat = $tohr + $tomin / 60;
+    }
+
+  last if $seen + ($inat < 8) > 1;
+
+    if ($inat < 5 || $inat > 21 || $outat < 6 || $outat > 23) {
+	print;
+    }
+}
diff --git a/eg/scan/scan_messages b/eg/scan/scan_messages
new file mode 100644
index 0000000000..6f8ab2b58b
--- /dev/null
+++ b/eg/scan/scan_messages
@@ -0,0 +1,222 @@
+#!/usr/bin/perl -P
+
+# $Header: scan_messages,v 2.0 88/06/05 00:17:46 root Exp $
+
+# This prints out extraordinary console messages.  You'll need to customize.
+
+chdir('/usr/adm/private/memories') || die "Can't cd.";
+
+$maxpos = `cat oldmsgs 2>&1`;
+
+#if defined(mc300) || defined(mc500) || defined(mc700)
+open(Msgs, '/dev/null') || die "scan_messages: can't open messages";
+#else
+open(Msgs, '/usr/adm/messages') || die "scan_messages: can't open messages";
+#endif
+
+($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+   $blksize,$blocks) = stat(Msgs);
+
+if ($size < $maxpos) {		# Did somebody truncate messages file?
+    $maxpos = 0;
+}
+
+seek(Msgs,$maxpos,0);		# Start where we left off last time.
+
+while (<Msgs>) {
+    s/\[(\d+)\]/#/ && s/$1/#/g;
+#ifdef vax
+    $_ =~ s/[A-Z][a-z][a-z] +\w+ +[0-9:]+ +\w+ +//;
+    next if /root@.*:/;
+    next if /^vmunix: 4.3 BSD UNIX/;
+    next if /^vmunix: Copyright/;
+    next if /^vmunix: avail mem =/;
+    next if /^vmunix: SBIA0 at /;
+    next if /^vmunix: disk ra81 is/;
+    next if /^vmunix: dmf. at uba/;
+    next if /^vmunix: dmf.:.*asynch/;
+    next if /^vmunix: ex. at uba/;
+    next if /^vmunix: ex.: HW/;
+    next if /^vmunix: il. at uba/;
+    next if /^vmunix: il.: hardware/;
+    next if /^vmunix: ra. at uba/;
+    next if /^vmunix: ra.: media/;
+    next if /^vmunix: real mem/;
+    next if /^vmunix: syncing disks/;
+    next if /^vmunix: tms/;
+    next if /^vmunix: tmscp. at uba/;
+    next if /^vmunix: uba. at /;
+    next if /^vmunix: uda. at /;
+    next if /^vmunix: uda.: unit . ONLIN/;
+    next if /^vmunix: .*buffers containing/;
+    next if /^syslogd: .*newslog/;
+#endif
+    next if /unknown service/;
+    next if /^\.\.\.$/;
+    if (/^[A-Z][a-z][a-z] [ 0-9][0-9] [ 0-9][0-9]:[0-9][0-9]/) {
+	$pfx = '';
+	next;
+    }
+    next if /^[ \t]*$/;
+    next if /^[ 0-9]*done$/;
+    if (/^A/) {
+	next if /^Accounting [sr]/;
+    }
+    elsif (/^C/) {
+	next if /^Called from/;
+	next if /^Copyright/;
+    }
+    elsif (/^E/) {
+	next if /^End traceback/;
+	next if /^Ethernet address =/;
+    }
+    elsif (/^K/) {
+	next if /^KERNEL MODE/;
+    }
+    elsif (/^R/) {
+	next if /^Rebooting Unix/;
+    }
+    elsif (/^S/) {
+	next if /^Sun UNIX 4\.2 Release/;
+    }
+    elsif (/^W/) {
+	next if /^WARNING: clock gained/;
+    }
+    elsif (/^a/) {
+	next if /^arg /;
+	next if /^avail mem =/;
+    }
+    elsif (/^b/) {
+	next if /^bwtwo[0-9] at /;
+    }
+    elsif (/^c/) {
+	next if /^cgone[0-9] at /;
+	next if /^cdp[0-9] at /;
+	next if /^csr /;
+    }
+    elsif (/^d/) {
+	next if /^dcpa: init/;
+	next if /^done$/;
+	next if /^dts/;
+	next if /^dump i\/o error/;
+	next if /^dumping to dev/;
+	next if /^dump succeeded/;
+	$pfx = '*' if /^dev = /;
+    }
+    elsif (/^e/) {
+	next if /^end \*\*/;
+	next if /^error in copy/;
+    }
+    elsif (/^f/) {
+	next if /^found /;
+    }
+    elsif (/^i/) {
+	next if /^ib[0-9] at /;
+	next if /^ie[0-9] at /;
+    }
+    elsif (/^l/) {
+	next if /^le[0-9] at /;
+    }
+    elsif (/^m/) {
+	next if /^mem = /;
+	next if /^mt[0-9] at /;
+	next if /^mti[0-9] at /;
+	$pfx = '*' if /^mode = /;
+    }
+    elsif (/^n/) {
+	next if /^not found /;
+    }
+    elsif (/^p/) {
+	next if /^page map /;
+	next if /^pi[0-9] at /;
+	$pfx = '*' if /^panic/;
+    }
+    elsif (/^q/) {
+	next if /^qqq /;
+    }
+    elsif (/^r/) {
+	next if /^read  /;
+	next if /^revarp: Requesting/;
+	next if /^root [od]/;
+    }
+    elsif (/^s/) {
+	next if /^sc[0-9] at /;
+	next if /^sd[0-9] at /;
+	next if /^sd[0-9]: </;
+	next if /^si[0-9] at /;
+	next if /^si_getstatus/;
+	next if /^sk[0-9] at /;
+	next if /^skioctl/;
+	next if /^skopen/;
+	next if /^skprobe/;
+	next if /^skread/;
+	next if /^skwrite/;
+	next if /^sky[0-9] at /;
+	next if /^st[0-9] at /;
+	next if /^st0:.*load/;
+	next if /^stat1 = /;
+	next if /^syncing disks/;
+	next if /^syslogd: going down on signal 15/;
+    }
+    elsif (/^t/) {
+	next if /^timeout [0-9]/;
+	next if /^tm[0-9] at /;
+	next if /^tod[0-9] at /;
+	next if /^tv [0-9]/;
+	$pfx = '*' if /^trap address/;
+    }
+    elsif (/^u/) {
+	next if /^unit nsk/;
+	next if /^use one of/;
+	$pfx = '' if /^using/;
+	next if /^using [0-9]+ buffers/;
+    }
+    elsif (/^x/) {
+	next if /^xy[0-9] at /;
+	next if /^write [0-9]/;
+	next if /^xy[0-9]: </;
+	next if /^xyc[0-9] at /;
+    }
+    elsif (/^y/) {
+	next if /^yyy [0-9]/;
+    }
+    elsif (/^z/) {
+	next if /^zs[0-9] at /;
+    }
+    $pfx = '*' if /^[a-z]+:$/;
+    s/pid [0-9]+: //;
+    if (/last message repeated ([0-9]+) time/) {
+	$seen{$last} += $1;
+	next;
+    }
+    s/^/$pfx/ if $pfx;
+    unless ($seen{$_}++) {
+	push(@seen,$_);
+    }
+    $last = $_;
+}
+$max = tell(Msgs);
+
+open(tmp,'|sort >oldmsgs.tmp') || die "Can't create tmp file.";
+while ($_ = pop(@seen)) {
+    print tmp $_;
+}
+close(tmp);
+open(tmp,'oldmsgs.tmp') || die "Can't reopen tmp file.";
+while (<tmp>) {
+    if (/^nd:/) {
+	next if $seen{$_} < 20;
+    }
+    if (/NFS/) {
+	next if $seen{$_} < 20;
+    }
+    if (/no carrier/) {
+	next if $seen{$_} < 20;
+    }
+    if (/silo overflow/) {
+	next if $seen{$_} < 20;
+    }
+    print $seen{$_},":\t",$_;
+}
+
+print `rm -f oldmsgs.tmp 2>&1; echo $max > oldmsgs 2>&1`;
diff --git a/eg/scan/scan_passwd b/eg/scan/scan_passwd
new file mode 100644
index 0000000000..62ef1e7794
--- /dev/null
+++ b/eg/scan/scan_passwd
@@ -0,0 +1,30 @@
+#!/usr/bin/perl
+
+# $Header: scan_passwd,v 2.0 88/06/05 00:17:49 root Exp $
+
+# This scans passwd file for security holes.
+
+open(Pass,'/etc/passwd') || die "Can't open passwd file";
+# $dotriv = (`date` =~ /^Mon/);
+$dotriv = 1;
+
+while (<Pass>) {
+    ($login,$pass,$uid,$gid,$gcos,$home,$shell) = split(/:/);
+    if ($shell eq '') {
+	print "Short: $_";
+    }
+    next if /^[+]/;
+    if ($pass eq '') {
+	if (index(":sync:lpq:+:", ":$login:") < 0) {
+	    print "No pass: $login\t$gcos\n";
+	}
+    }
+    elsif ($dotriv && crypt($login,substr($pass,0,2)) eq $pass) {
+	print "Trivial: $login\t$gcos\n";
+    }
+    if ($uid == 0) {
+	if ($login !~ /^.?root$/ && $pass ne '*') {
+	    print "Extra root: $_";
+	}
+    }
+}
diff --git a/eg/scan/scan_ps b/eg/scan/scan_ps
new file mode 100644
index 0000000000..bb33b87ae8
--- /dev/null
+++ b/eg/scan/scan_ps
@@ -0,0 +1,32 @@
+#!/usr/bin/perl -P
+
+# $Header: scan_ps,v 2.0 88/06/05 00:17:51 root Exp $
+
+# This looks for looping processes.
+
+#if defined(mc300) || defined(mc500) || defined(mc700)
+open(Ps, '/bin/ps -el|') || die "scan_ps: can't run ps";
+
+while (<Ps>) {
+    next if /rwhod/;
+    print if index(' T', substr($_,62,1)) < 0;
+}
+#else
+open(Ps, '/bin/ps auxww|') || die "scan_ps: can't run ps";
+
+while (<Ps>) {
+    next if /dataserver/;
+    next if /nfsd/;
+    next if /update/;
+    next if /ypserv/;
+    next if /rwhod/;
+    next if /routed/;
+    next if /pagedaemon/;
+#ifdef vax
+    ($user,$pid,$cpu,$mem,$sz,$rss,$tt,$stat,$start,$time) = split;
+#else
+    ($user,$pid,$cpu,$mem,$sz,$rss,$tt,$stat,$time) = split;
+#endif
+    print if length($time) > 4;
+}
+#endif
diff --git a/eg/scan/scan_sudo b/eg/scan/scan_sudo
new file mode 100644
index 0000000000..e0a99ee0c3
--- /dev/null
+++ b/eg/scan/scan_sudo
@@ -0,0 +1,54 @@
+#!/usr/bin/perl -P
+
+# $Header: scan_sudo,v 2.0 88/06/05 00:18:01 root Exp $
+
+# Analyze the sudo log.
+
+chdir('/usr/adm/private/memories') || die "Can't cd.";
+
+if (open(Oldsudo,'oldsudo')) {
+    $maxpos = <Oldsudo>;
+    close Oldsudo;
+}
+else {
+    $maxpos = 0;
+    `echo 0 >oldsudo`;
+}
+
+unless (open(Sudo, '/usr/adm/sudo.log')) {
+    print "Somebody removed sudo.log!!!\n" if $maxpos;
+    exit 0;
+}
+
+($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+   $blksize,$blocks) = stat(Sudo);
+
+if ($size < $maxpos) {
+    $maxpos = 0;
+    print "Somebody reset sudo.log!!!\n";
+}
+
+seek(Sudo,$maxpos,0);
+
+while (<Sudo>) {
+    s/^.* :[ \t]+//;
+    s/ipcrm.*/ipcrm/;
+    s/kill.*/kill/;
+    unless ($seen{$_}++) {
+	push(@seen,$_);
+    }
+    $last = $_;
+}
+$max = tell(Sudo);
+
+open(tmp,'|sort >oldsudo.tmp') || die "Can't create tmp file.";
+while ($_ = pop(@seen)) {
+    print tmp $_;
+}
+close(tmp);
+open(tmp,'oldsudo.tmp') || die "Can't reopen tmp file.";
+while (<tmp>) {
+    print $seen{$_},":\t",$_;
+}
+
+print `(rm -f oldsudo.tmp; echo $max > oldsudo) 2>&1`;
diff --git a/eg/scan/scan_suid b/eg/scan/scan_suid
new file mode 100644
index 0000000000..4f62705504
--- /dev/null
+++ b/eg/scan/scan_suid
@@ -0,0 +1,84 @@
+#!/usr/bin/perl -P
+
+# $Header: scan_suid,v 2.0 88/06/05 00:17:54 root Exp $
+
+# Look for new setuid root files.
+
+chdir '/usr/adm/private/memories' || die "Can't cd.";
+
+($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+   $blksize,$blocks) = stat('oldsuid');
+if ($nlink) {
+    $lasttime = $mtime;
+    $tmp = $ctime - $atime;
+    if ($tmp <= 0 || $tmp >= 10) {
+	print "WARNING: somebody has read oldsuid!\n";
+    }
+    $tmp = $ctime - $mtime;
+    if ($tmp <= 0 || $tmp >= 10) {
+	print "WARNING: somebody has modified oldsuid!!!\n";
+    }
+} else {
+    $lasttime = time - 60 * 60 * 24;	# one day ago
+}
+$thistime = time;
+
+#if defined(mc300) || defined(mc500) || defined(mc700)
+open(Find, 'find / -perm -04000 -print |') ||
+	die "scan_find: can't run find";
+#else
+open(Find, 'find / \( -fstype nfs -prune \) -o -perm -04000 -ls |') ||
+	die "scan_find: can't run find";
+#endif
+
+open(suid, '>newsuid.tmp');
+
+while (<Find>) {
+
+#if defined(mc300) || defined(mc500) || defined(mc700)
+    $x = `/bin/ls -il $_`;
+    $_ = $x;
+    s/^ *//;
+    ($inode,$perm,$links,$owner,$group,$size,$month,$day,$time,$name)
+      = split;
+#else
+    s/^ *//;
+    ($inode,$blocks,$perm,$links,$owner,$group,$size,$month,$day,$time,$name)
+      = split;
+#endif
+
+    if ($perm =~ /[sS]/ && $owner eq 'root') {
+	($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+	   $blksize,$blocks) = stat($name);
+	$foo = sprintf("%10s%3s %-8s %-8s%9s %3s %2s %s %s\n",
+		$perm,$links,$owner,$group,$size,$month,$day,$name,$inode);
+	print suid $foo;
+	if ($ctime > $lasttime) {
+	    if ($ctime > $thistime) {
+		print "Future file: $foo";
+	    }
+	    else {
+		$ct .= $foo;
+	    }
+	}
+    }
+}
+close(suid);
+
+print `sort +7 -8 newsuid.tmp >newsuid 2>&1`;
+$foo = `/bin/diff oldsuid newsuid 2>&1`;
+print "Differences in suid info:\n",$foo if $foo;
+print `mv oldsuid oldoldsuid 2>&1; mv newsuid oldsuid 2>&1`;
+print `touch oldsuid 2>&1;sleep 2 2>&1;chmod o+w oldsuid 2>&1`;
+print `rm -f newsuid.tmp 2>&1`;
+
+@ct = split(/\n/,$ct);
+$ct = '';
+$* = 1;
+while ($#ct >= 0) {
+    $tmp = shift(@ct);
+    unless ($foo =~ "^>.*$tmp\n") { $ct .= "$tmp\n"; }
+}
+
+print "Inode changed since last time:\n",$ct if $ct;
+
diff --git a/eg/scan/scanner b/eg/scan/scanner
new file mode 100644
index 0000000000..25e953d402
--- /dev/null
+++ b/eg/scan/scanner
@@ -0,0 +1,87 @@
+#!/usr/bin/perl
+
+# $Header: scanner,v 2.0 88/06/05 00:17:42 root Exp $
+
+# This runs all the scan_* routines on all the machines in /etc/ghosts.
+# We run this every morning at about 6 am:
+
+#	!/bin/sh
+#	cd /usr/adm/private
+#	decrypt scanner | perl >scan.out 2>&1
+#	mail admin <scan.out
+
+# Note that the scan_* files should be encrypted with the key "-inquire", and
+# scanner should be encrypted somehow so that people can't find that key.
+# I leave it up to you to figure out how to unencrypt it before executing.
+
+$ENV{'PATH'} = '/bin:/usr/bin:/usr/local/bin:/usr/ucb:.';
+
+$| = 1;		# command buffering on stdout
+
+print "Subject: bizarre happenings\n\n";
+
+(chdir '/usr/adm/private') || die "Can't cd.";
+
+if ($#ARGV >= 0) {
+    @scanlist = @ARGV;
+} else {
+    @scanlist = split(/[ \t\n]+/,`echo scan_*`);
+}
+
+scan: while ($scan = shift(@scanlist)) {
+    print "\n********** $scan **********\n";
+    $showhost++;
+
+    $systype = 'all';
+
+    open(ghosts, '/etc/ghosts') || die 'No /etc/ghosts file';
+
+    $one_of_these = ":$systype:";
+    if ($systype =~ s/\+/[+]/g) {
+	$one_of_these =~ s/\+/:/g;
+    }
+
+    line: while (<ghosts>) {
+	s/[ \t]*\n//;
+	if (!$_ || /^#/) {
+	    next line;
+	}
+	if (/^([a-zA-Z_0-9]+)=(.+)/) {
+	    $name = $1; $repl = $2;
+	    $repl =~ s/\+/:/g;
+	    $one_of_these =~ s/:$name:/:$repl:/;
+	    next line;
+	}
+	@gh = split;
+	$host = $gh[0];
+	if ($showhost) { $showhost = "$host:\t"; }
+	class: while ($class = pop(gh)) {
+	    if (index($one_of_these,":$class:") >=0) {
+		$iter = 0;
+		`exec crypt -inquire <$scan >.x 2>/dev/null`;
+		unless (open(scan,'.x')) {
+		    print "Can't run $scan.";
+		    next scan;
+		}
+		$cmd = <scan>;
+		unless ($cmd =~ s/#!(.*)\n/$1/) {
+		    $cmd = '/usr/bin/perl';
+		}
+		close(scan);
+		if (open(pipe,"exec rsh $host '$cmd' <.x|")) {
+		    sleep(5);
+		    unlink '.x';
+		    while (<pipe>) {
+			last if $iter++ > 1000;		# must be looping
+			next if /^[0-9.]+u [0-9.]+s/;
+			print $showhost,$_;
+		    }
+		    close(pipe);
+		} else {
+		    print "(Can't execute rsh.)\n";
+		}
+		last class;
+	    }
+	}
+    }
+}
diff --git a/eg/shmkill b/eg/shmkill
new file mode 100644
index 0000000000..ba288d8e0d
--- /dev/null
+++ b/eg/shmkill
@@ -0,0 +1,24 @@
+#!/usr/bin/perl
+
+# $Header: shmkill,v 2.0 88/06/05 00:16:59 root Exp $
+
+# A script to call from crontab periodically when people are leaving shared
+# memory sitting around unattached.
+
+open(ipcs,'ipcs -m -o|') || die "Can't run ipcs";
+
+while (<ipcs>) {
+    $tmp = index($_,'NATTCH');
+    $pos = $tmp if $tmp >= 0;
+    if (/^m/) {
+	($m,$id,$key,$mode,$owner,$group,$attach) = split;
+	if ($attach != substr($_,$pos,6)) {
+	    die "Different ipcs format--can't parse!";
+	}
+	if ($attach == 0) {
+	    push(@goners,'-m',$id);
+	}
+    }
+}
+
+exec 'ipcrm', @goners if $#goners >= 0;
diff --git a/eg/van/empty b/eg/van/empty
new file mode 100644
index 0000000000..11a55583e1
--- /dev/null
+++ b/eg/van/empty
@@ -0,0 +1,45 @@
+#!/usr/bin/perl
+
+# $Header: empty,v 2.0 88/06/05 00:17:39 root Exp $
+
+# This script empties a trashcan.
+
+$recursive = shift if $ARGV[0] eq '-r';
+
+@ARGV = '.' if $#ARGV < 0;
+
+chop($pwd = `pwd`);
+
+dir: foreach $dir (@ARGV) {
+    unless (chdir $dir) {
+	print stderr "Can't find directory $dir\n";
+	next dir;
+    }
+    if ($recursive) {
+	do cmd('find . -name .deleted -exec /bin/rm -rf {} ;');
+    }
+    else {
+	if (-d '.deleted') {
+	    do cmd('rm -rf .deleted');
+	}
+	else {
+	    if ($dir eq '.' && $pwd =~ m|/\.deleted$|) {
+		chdir '..';
+		do cmd('rm -rf .deleted');
+	    }
+	    else {
+		print stderr "No trashcan found in directory $dir\n";
+	    }
+	}
+    }
+}
+continue {
+    chdir $pwd;
+}
+
+# force direct execution with no shell
+
+sub cmd {
+    system split(' ',join(' ',@_));
+}
+
diff --git a/eg/van/unvanish b/eg/van/unvanish
new file mode 100644
index 0000000000..4a83c81232
--- /dev/null
+++ b/eg/van/unvanish
@@ -0,0 +1,66 @@
+#!/usr/bin/perl
+
+# $Header: unvanish,v 2.0 88/06/05 00:17:30 root Exp $
+
+sub it {
+    if ($olddir ne '.') {
+	chop($pwd = `pwd`) if $pwd eq '';
+	(chdir $olddir) || die "Directory $olddir is not accesible";
+    }
+    unless ($olddir eq '.deleted') {
+	if (-d '.deleted') {
+	    chdir '.deleted' || die "Directory .deleted is not accesible";
+	}
+	else {
+	    chop($pwd = `pwd`) if $pwd eq '';
+	    die "Directory .deleted does not exist" unless $pwd =~ /\.deleted$/;
+	}
+    }
+    print `mv $startfiles$filelist..$force`;
+    if ($olddir ne '.') {
+	(chdir $pwd) || die "Can't get back to original directory: $pwd";
+    }
+}
+
+if ($#ARGV < 0) {
+    open(lastcmd,'.deleted/.lastcmd') || 
+	open(lastcmd,'.lastcmd') || 
+	    die "No previous vanish in this dir";
+    $ARGV = <lastcmd>;
+    close(lastcmd);
+    @ARGV = split(/[\n ]+/,$ARGV);
+}
+
+while ($ARGV[0] =~ /^-/) {
+    $_ = shift;
+    /^-f/ && ($force = ' >/dev/null 2>&1');
+    /^-i/ && ($interactive = 1);
+    if (/^-+$/) {
+	$startfiles = '- ';
+	last;
+    }
+}
+
+while ($file = shift) {
+    if ($file =~ s|^(.*)/||) {
+	$dir = $1;
+    }
+    else {
+	$dir = '.';
+    }
+
+    if ($dir ne $olddir) {
+	do it() if $olddir;
+	$olddir = $dir;
+    }
+
+    if ($interactive) {
+	print "unvanish: restore $dir/$file? ";
+	next unless <stdin> =~ /^y/i;
+    }
+
+    $filelist .= $file; $filelist .= ' ';
+
+}
+
+do it() if $olddir;
diff --git a/eg/van/vanexp b/eg/van/vanexp
new file mode 100644
index 0000000000..29b42e8edf
--- /dev/null
+++ b/eg/van/vanexp
@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+
+# $Header: vanexp,v 2.0 88/06/05 00:17:34 root Exp $
+
+# This is for running from a find at night to expire old .deleteds
+
+$can = $ARGV[0];
+
+exit 1 unless $can =~ /.deleted$/;
+
+($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
+   $blksize,$blocks) = stat($can);
+
+exit 0 unless $size;
+
+if (time - $mtime > 2 * 24 * 60 * 60) {
+    `/bin/rm -rf $can`;
+}
+else {
+    `find $can -ctime +2 -exec rm -f {} \;`;
+}
diff --git a/eg/van/vanish b/eg/van/vanish
new file mode 100644
index 0000000000..b665e7c8d9
--- /dev/null
+++ b/eg/van/vanish
@@ -0,0 +1,65 @@
+#!/usr/bin/perl
+
+# $Header: vanish,v 2.0 88/06/05 00:17:36 root Exp $
+
+sub it {
+    if ($olddir ne '.') {
+	chop($pwd = `pwd`) if $pwd eq '';
+	(chdir $olddir) || die "Directory $olddir is not accesible";
+    }
+    if (!-d .deleted) {
+	print `mkdir .deleted; chmod 775 .deleted`;
+	die "You can't remove files from $olddir" if $?;
+    }
+    $filelist =~ s/ $//;
+    $filelist =~ s/#/\\#/g;
+    if ($filelist !~ /^[ \t]*$/) {
+	open(lastcmd,'>.deleted/.lastcmd');
+	print lastcmd $filelist,"\n";
+	close(lastcmd);
+	print `/bin/mv $startfiles$filelist .deleted$force`;
+    }
+    if ($olddir ne '.') {
+	(chdir $pwd) || die "Can't get back to original directory: $pwd";
+    }
+}
+
+while ($ARGV[0] =~ /^-/) {
+    $_ = shift;
+    /^-f/ && ($force = ' >/dev/null 2>&1');
+    /^-i/ && ($interactive = 1);
+    if (/^-+$/) {
+	$startfiles = '- ';
+	last;
+    }
+}
+
+chop($pwd = `pwd`);
+
+while ($file = shift) {
+    if ($file =~ s|^(.*)/||) {
+	$dir = $1;
+    }
+    else {
+	$dir = '.';
+    }
+
+    if ($interactive) {
+	print "vanish: remove $dir/$file? ";
+	next unless <stdin> =~ /^y/i;
+    }
+
+    if ($file eq '.deleted') {
+	print stderr "To delete .deleted (the trashcan) use the 'empty' command.\n";
+	next;
+    }
+
+    if ($dir ne $olddir) {
+	do it() if $olddir;
+	$olddir = $dir;
+    }
+
+    $filelist .= $file; $filelist .= ' ';
+}
+
+do it() if $olddir;