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.rn '' }`
''' $RCSfile: visudo.8,v $$Revision: 1.1 $$Date: 1996/10/14 05:14:58 $
'''
''' $Log: visudo.8,v $
''' Revision 1.1 1996/10/14 05:14:58 millert
''' sudo 1.5.2
'''
'''
.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" ""
.ds L' '
.ds R' '
'br\}
.el\{\
.ds -- \(em\|
.tr \*(Tr
.ds L" ``
.ds R" ''
.ds L' `
.ds R' '
.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 "1.5.2" "7/Sep/96" "MAINTENANCE COMMANDS"
.IX Title "visudo 8"
.UC
.IX Name "visudo - edit the sudoers file"
.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"
.IX Header "NAME"
visudo \- edit the sudoers file
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\fBvisudo\fR [ \fB\-V\fR ]
.SH "DESCRIPTION"
.IX Header "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
environmental 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"
.IX Header "OPTIONS"
\fBvisudo\fR accepts the following command line option:
.Ip "-V" 4
.IX Item "-V"
The \f(CW-V\fR (version) option causes \fBvisudo\fR to print the version number
and exit.
.SH "FILES"
.IX Header "FILES"
.PP
.Vb 2
\& /etc/sudoers file of authorized users.
\& /etc/stmp lock file for visudo.
.Ve
.SH "ENVIRONMENT VARIABLES"
.IX Header "ENVIRONMENT VARIABLES"
The following are used only if \fBvisudo\fR was compiled with the
\fIENV_EDITOR\fR option:
.PP
.Vb 2
\& EDITOR Used by visudo as the editor to use.
\& VISUAL Used by visudo if EDITOR is not set.
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
Many people have worked on \fIsudo\fR over the years, this version of
\fBvisudo\fR was written by:
.PP
.Vb 1
\& Todd Miller <Todd.Miller@courtesan.com>
.Ve
See the HISTORY file in the sudo distribution for more details.
.PP
Please send all bugs, comments, and changes to sudo-bugs@courtesan.com.
.SH "DISCLAIMER"
.IX Header "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.
.PP
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"
.IX Header "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.
.PP
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"
.IX Header "BUGS"
The \fI\-V\fR flag gives the version of the \fIsudo\fR package rather than
the individual \fBvisudo\fR program.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\fIsudo\fR\|(8), \fIvipw\fR\|(8).
.rn }` ''
|
