.rn '' }` ''' $RCSfile$$Revision$$Date$ ''' ''' $Log$ ''' Revision 1.4 1999/01/17 22:40:55 millert ''' crank version and regen files ''' ''' .de Sh .br .if t .Sp .ne 5 .PP \fB\\$1\fR .PP .. .de Sp .if t .sp .5v .if n .sp .. .de Ip .br .ie \\n(.$>=3 .ne \\$3 .el .ne 3 .IP "\\$1" \\$2 .. .de Vb .ft CW .nf .ne \\$1 .. .de Ve .ft R .fi .. ''' ''' ''' Set up \*(-- to give an unbreakable dash; ''' string Tr holds user defined translation string. ''' Bell System Logo is used as a dummy character. ''' .tr \(*W-|\(bv\*(Tr .ie n \{\ .ds -- \(*W- .ds PI pi .if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch .if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch .ds L" "" .ds R" "" ''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of ''' \*(L" and \*(R", except that they are used on ".xx" lines, ''' such as .IP and .SH, which do another additional levels of ''' double-quote interpretation .ds M" """ .ds S" """ .ds N" """"" .ds T" """"" .ds L' ' .ds R' ' .ds M' ' .ds S' ' .ds N' ' .ds T' ' 'br\} .el\{\ .ds -- \(em\| .tr \*(Tr .ds L" `` .ds R" '' .ds M" `` .ds S" '' .ds N" `` .ds T" '' .ds L' ` .ds R' ' .ds M' ` .ds S' ' .ds N' ` .ds T' ' .ds PI \(*p 'br\} .\" If the F register is turned on, we'll generate .\" index entries out stderr for the following things: .\" TH Title .\" SH Header .\" Sh Subsection .\" Ip Item .\" X<> Xref (embedded .\" Of course, you have to process the output yourself .\" in some meaninful fashion. .if \nF \{ .de IX .tm Index:\\$1\t\\n%\t"\\$2" .. .nr % 0 .rr F .\} .TH visudo 8 "1.5.8" "17/Oct/98" "MAINTENANCE COMMANDS" .UC .if n .hy 0 .if n .na .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .de CQ \" put $1 in typewriter font .ft CW 'if n "\c 'if t \\&\\$1\c 'if n \\&\\$1\c 'if n \&" \\&\\$2 \\$3 \\$4 \\$5 \\$6 \\$7 '.ft R .. .\" @(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2 . \" AM - accent mark definitions .bd B 3 . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds ? ? . ds ! ! . ds / . ds q .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds ? \s-2c\h'-\w'c'u*7/10'\u\h'\*(#H'\zi\d\s+2\h'\w'c'u*8/10' . ds ! \s-2\(or\s+2\h'-\w'\(or'u'\v'-.8m'.\v'.8m' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' . ds q o\h'-\w'o'u*8/10'\s-4\v'.4m'\z\(*i\v'-.4m'\s+4\h'\w'o'u*8/10' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds v \\k:\h'-(\\n(.wu*9/10-\*(#H)'\v'-\*(#V'\*(#[\s-4v\s0\v'\*(#V'\h'|\\n:u'\*(#] .ds _ \\k:\h'-(\\n(.wu*9/10-\*(#H+(\*(#F*2/3))'\v'-.4m'\z\(hy\v'.4m'\h'|\\n:u' .ds . \\k:\h'-(\\n(.wu*8/10)'\v'\*(#V*4/10'\z.\v'-\*(#V*4/10'\h'|\\n:u' .ds 3 \*(#[\v'.2m'\s-2\&3\s0\v'-.2m'\*(#] .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E .ds oe o\h'-(\w'o'u*4/10)'e .ds Oe O\h'-(\w'O'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds v \h'-1'\o'\(aa\(ga' . ds _ \h'-1'^ . ds . \h'-1'. . ds 3 3 . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE . ds oe oe . ds Oe OE .\} .rm #[ #] #H #V #F C .SH "NAME" visudo \- edit the sudoers file .SH "SYNOPSIS" \fBvisudo\fR [ \fB\-V\fR ] .SH "DESCRIPTION" \fBvisudo\fR edits the \fIsudoers\fR file in a safe fashion, analogous to \fIvipw\fR\|(8). \fBvisudo\fR locks the \fIsudoers\fR file against multiple simultaneous edits, provides basic sanity checks, and checks for parse errors. If the \fIsudoers\fR file is currently being edited you will receive a message to try again later. In the default configuration, the \fIvi\fR\|(1) editor is used, but there is a compile time option to allow use of whatever editor the environment variables \f(CWEDITOR\fR or \f(CWVISUAL\fR are set to. .PP \fBvisudo\fR parses the \fIsudoers\fR file after the edit and will not save the changes if there is a syntax error. Upon finding an error, a message will be printed stating the line \fInumber\fR\|(s) that the error occurred on and the user will receive the \*(L"What now?\*(R" prompt. At this point the user may enter \*(L"e\*(R" to re-edit the \fIsudoers\fR file, enter \*(L"x\*(R" to exit without saving the changes, or \*(L"Q\*(R" to quit and save changes. The \*(L"Q\*(R" option should be used with extreme care because if \fBvisudo\fR believes there to be a parse error, so will \fBsudo\fR and no one will be able to execute \fBsudo\fR again until the error is fixed. Any other command at this prompt will print a short help message. When editing the \fIsudoers\fR file after a parse error has been detected the cursor will be placed on the line where the error occurred (if the editor supports this feature). .SH "OPTIONS" \fBvisudo\fR accepts the following command line option: .Ip "-V" 4 The \f(CW-V\fR (version) option causes \fBvisudo\fR to print the version number and exit. .SH "ERRORS" .Ip "sudoers file busy, try again later." 4 Either someone is currently editing the \fIsudoers\fR file or there is a stale sudoers lock file (/etc/stmp by default) that you need to delete. .Ip "/etc/stmp: Permission denied" 4 You didn't run \fBvisudo\fR as root. .Ip "Can't find you in the passwd database" 4 Your userid does not appear in the passwd file. .SH "FILES" .Sp .Vb 2 \& /etc/sudoers file of authorized users. \& /etc/stmp lock file for visudo. .Ve .SH "ENVIRONMENT VARIABLES" The following are used only if \fBvisudo\fR was compiled with the \fIENV_EDITOR\fR option: .Sp .Vb 2 \& EDITOR Used by visudo as the editor to use. \& VISUAL Used by visudo if EDITOR is not set. .Ve .SH "AUTHOR" Many people have worked on \fIsudo\fR over the years, this version of \fBvisudo\fR was written by: .Sp .Vb 1 \& Todd Miller .Ve See the HISTORY file in the sudo distribution for more details. .Sp Please send all bugs, comments, and changes to sudo-bugs@courtesan.com. .SH "DISCLAIMER" This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. .Sp You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. .SH "CAVEATS" Due to the syntax of the \fIsudoers\fR file, there is no way for \fBvisudo\fR to tell the difference between a mistyped {Host,User,Cmnd}_Alias and a user or host name. .Sp There is no easy way to prevent a user from gaining a root shell if the editor used by \fBvisudo\fR allows shell escapes. .SH "BUGS" The \fI\-V\fR flag gives the version of the \fIsudo\fR package rather than the individual \fBvisudo\fR program. .SH "SEE ALSO" \fIsudo\fR\|(8), \fIvipw\fR\|(8). .rn }` '' .IX Title "visudo 8" .IX Name "visudo - edit the sudoers file" .IX Header "NAME" .IX Header "SYNOPSIS" .IX Header "DESCRIPTION" .IX Header "OPTIONS" .IX Item "-V" .IX Header "ERRORS" .IX Item "sudoers file busy, try again later." .IX Item "/etc/stmp: Permission denied" .IX Item "Can't find you in the passwd database" .IX Header "FILES" .IX Header "ENVIRONMENT VARIABLES" .IX Header "AUTHOR" .IX Header "DISCLAIMER" .IX Header "CAVEATS" .IX Header "BUGS" .IX Header "SEE ALSO"