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diff --git a/srclib/pcre/doc/pcregrep.txt b/srclib/pcre/doc/pcregrep.txt index 1600228402..1dca003c8b 100644 --- a/srclib/pcre/doc/pcregrep.txt +++ b/srclib/pcre/doc/pcregrep.txt @@ -1,101 +1,122 @@ -NAME - pcregrep - a grep with Perl-compatible regular expressions. +PCREGREP(1) PCREGREP(1) -SYNOPSIS - pcregrep [-Vcfhilnrsvx] pattern [file] ... +NAME + pcregrep - a grep with Perl-compatible regular expressions. +SYNOPSIS + pcregrep [-Vcfhilnrsuvx] [long options] [pattern] [file1 file2 ...] DESCRIPTION - pcregrep searches files for character patterns, in the same - way as other grep commands do, but it uses the PCRE regular - expression library to support patterns that are compatible - with the regular expressions of Perl 5. See pcre(3) for a - full description of syntax and semantics. - If no files are specified, pcregrep reads the standard - input. By default, each line that matches the pattern is - copied to the standard output, and if there is more than one - file, the file name is printed before each line of output. - However, there are options that can change how pcregrep - behaves. + pcregrep searches files for character patterns, in the same way as + other grep commands do, but it uses the PCRE regular expression library + to support patterns that are compatible with the regular expressions of + Perl 5. See pcrepattern for a full description of syntax and semantics + of the regular expressions that PCRE supports. - Lines are limited to BUFSIZ characters. BUFSIZ is defined in - <stdio.h>. The newline character is removed from the end of - each line before it is matched against the pattern. + A pattern must be specified on the command line unless the -f option is + used (see below). + If no files are specified, pcregrep reads the standard input. By + default, each line that matches the pattern is copied to the standard + output, and if there is more than one file, the file name is printed + before each line of output. However, there are options that can change + how pcregrep behaves. + + Lines are limited to BUFSIZ characters. BUFSIZ is defined in <stdio.h>. + The newline character is removed from the end of each line before it is + matched against the pattern. OPTIONS - -V Write the version number of the PCRE library being - used to the standard error stream. - -c Do not print individual lines; instead just print - a count of the number of lines that would other- - wise have been printed. If several files are - given, a count is printed for each of them. - -ffilename - Read patterns from the file, one per line, and - match all patterns against each line. There is a - maximum of 100 patterns. Trailing white space is - removed, and blank lines are ignored. An empty - file contains no patterns and therefore matches - nothing. + -V Write the version number of the PCRE library being used to + the standard error stream. + + -c Do not print individual lines; instead just print a count of + the number of lines that would otherwise have been printed. + If several files are given, a count is printed for each of + them. - -h Suppress printing of filenames when searching mul- - tiple files. + -ffilename + Read a number of patterns from the file, one per line, and + match all of them against each line of input. A line is out- + put if any of the patterns match it. When -f is used, no + pattern is taken from the command line; all arguments are + treated as file names. There is a maximum of 100 patterns. + Trailing white space is removed, and blank lines are ignored. + An empty file contains no patterns and therefore matches + nothing. - -i Ignore upper/lower case distinctions during com- - parisons. + -h Suppress printing of filenames when searching multiple files. - -l Instead of printing lines from the files, just + -i Ignore upper/lower case distinctions during comparisons. - print the names of the files containing lines that - would have been printed. Each file name is printed - once, on a separate line. + -l Instead of printing lines from the files, just print the + names of the files containing lines that would have been + printed. Each file name is printed once, on a separate line. - -n Precede each line by its line number in the file. + -n Precede each line by its line number in the file. - -r If any file is a directory, recursively scan the - files it contains. Without -r a directory is - scanned as a normal file. + -r If any file is a directory, recursively scan the files it + contains. Without -r a directory is scanned as a normal file. - -s Work silently, that is, display nothing except - error messages. The exit status indicates whether - any matches were found. + -s Work silently, that is, display nothing except error mes- + sages. The exit status indicates whether any matches were + found. - -v Invert the sense of the match, so that lines which - do not match the pattern are now the ones that are - found. + -u Operate in UTF-8 mode. This option is available only if PCRE + has been compiled with UTF-8 support. Both the pattern and + each subject line must be valid strings of UTF-8 characters. - -x Force the pattern to be anchored (it must start - matching at the beginning of the line) and in - addition, require it to match the entire line. - This is equivalent to having ^ and $ characters at - the start and end of each alternative branch in - the regular expression. + -v Invert the sense of the match, so that lines which do not + match the pattern are now the ones that are found. + -x Force the pattern to be anchored (it must start matching at + the beginning of the line) and in addition, require it to + match the entire line. This is equivalent to having ^ and $ + characters at the start and end of each alternative branch in + the regular expression. -SEE ALSO - pcre(3), Perl 5 documentation +LONG OPTIONS + Long forms of all the options are available, as in GNU grep. They are + shown in the following table: + -c --count + -h --no-filename + -i --ignore-case + -l --files-with-matches + -n --line-number + -r --recursive + -s --no-messages + -u --utf-8 + -V --version + -v --invert-match + -x --line-regex + -x --line-regexp + In addition, --file=filename is equivalent to -ffilename, and --help + shows the list of options and then exits. DIAGNOSTICS - Exit status is 0 if any matches were found, 1 if no matches - were found, and 2 for syntax errors or inacessible files - (even if matches were found). + Exit status is 0 if any matches were found, 1 if no matches were found, + and 2 for syntax errors or inacessible files (even if matches were + found). AUTHOR - Philip Hazel <ph10@cam.ac.uk> - Last updated: 15 August 2001 - Copyright (c) 1997-2001 University of Cambridge. + Philip Hazel <ph10@cam.ac.uk> + University Computing Service + Cambridge CB2 3QG, England. + +Last updated: 09 September 2004 +Copyright (c) 1997-2004 University of Cambridge. |