version 1.1.1.2, 2012/05/29 12:26:49
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version 1.1.1.4, 2013/07/22 10:46:12
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VISUDO(1m) MAINTENANCE COMMANDS VISUDO(1m) | VISUDO(1m) System Manager's Manual VISUDO(1m) |
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NNAAMMEE |
NNAAMMEE |
visudo - edit the sudoers file | vviissuuddoo - edit the sudoers file |
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SSYYNNOOPPSSIISS |
SSYYNNOOPPSSIISS |
vviissuuddoo [--cchhqqssVV] [--ff _s_u_d_o_e_r_s] | vviissuuddoo [--cchhqqssVV] [--ff _s_u_d_o_e_r_s] |
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DDEESSCCRRIIPPTTIIOONN |
DDEESSCCRRIIPPTTIIOONN |
vviissuuddoo edits the _s_u_d_o_e_r_s file in a safe fashion, analogous to _v_i_p_w(1m). | vviissuuddoo edits the _s_u_d_o_e_r_s file in a safe fashion, analogous to vipw(1m). |
vviissuuddoo locks the _s_u_d_o_e_r_s file against multiple simultaneous edits, | vviissuuddoo locks the _s_u_d_o_e_r_s file against multiple simultaneous edits, |
provides basic sanity checks, and checks for parse errors. If the | provides basic sanity checks, and checks for parse errors. If the |
_s_u_d_o_e_r_s file is currently being edited you will receive a message to | _s_u_d_o_e_r_s file is currently being edited you will receive a message to try |
try again later. | again later. |
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There is a hard-coded list of one or more editors that vviissuuddoo will use | There is a hard-coded list of one or more editors that vviissuuddoo will use |
set at compile-time that may be overridden via the _e_d_i_t_o_r _s_u_d_o_e_r_s | set at compile-time that may be overridden via the _e_d_i_t_o_r _s_u_d_o_e_r_s Default |
Default variable. This list defaults to "vi". Normally, vviissuuddoo does | variable. This list defaults to vi. Normally, vviissuuddoo does not honor the |
not honor the VISUAL or EDITOR environment variables unless they | VISUAL or EDITOR environment variables unless they contain an editor in |
contain an editor in the aforementioned editors list. However, if | the aforementioned editors list. However, if vviissuuddoo is configured with |
vviissuuddoo is configured with the _-_-_w_i_t_h_-_e_n_v_-_e_d_i_t_o_r option or the | the --with-env-editor option or the _e_n_v___e_d_i_t_o_r Default variable is set in |
_e_n_v___e_d_i_t_o_r Default variable is set in _s_u_d_o_e_r_s, vviissuuddoo will use any the | _s_u_d_o_e_r_s, vviissuuddoo will use any the editor defines by VISUAL or EDITOR. |
editor defines by VISUAL or EDITOR. Note that this can be a security | Note that this can be a security hole since it allows the user to execute |
hole since it allows the user to execute any program they wish simply | any program they wish simply by setting VISUAL or EDITOR. |
by setting VISUAL or EDITOR. | |
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vviissuuddoo parses the _s_u_d_o_e_r_s file after the edit and will not save the | vviissuuddoo parses the _s_u_d_o_e_r_s file after the edit and will not save the |
changes if there is a syntax error. Upon finding an error, vviissuuddoo will | changes if there is a syntax error. Upon finding an error, vviissuuddoo will |
print a message stating the line number(s) where the error occurred and | print a message stating the line number(s) where the error occurred and |
the user will receive the "What now?" prompt. At this point the user | the user will receive the ``What now?'' prompt. At this point the user |
may enter "e" to re-edit the _s_u_d_o_e_r_s file, "x" to exit without saving | may enter `e' to re-edit the _s_u_d_o_e_r_s file, `x' to exit without saving the |
the changes, or "Q" to quit and save changes. The "Q" option should be | changes, or `Q' to quit and save changes. The `Q' option should be used |
used with extreme care because if vviissuuddoo believes there to be a parse | with extreme care because if vviissuuddoo believes there to be a parse error, |
error, so will ssuuddoo and no one will be able to ssuuddoo again until the | so will ssuuddoo and no one will be able to ssuuddoo again until the error is |
error is fixed. If "e" is typed to edit the _s_u_d_o_e_r_s file after a | fixed. If `e' is typed to edit the _s_u_d_o_e_r_s file after a parse error has |
parse error has been detected, the cursor will be placed on the line | been detected, the cursor will be placed on the line where the error |
where the error occurred (if the editor supports this feature). | occurred (if the editor supports this feature). |
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OOPPTTIIOONNSS | The options are as follows: |
vviissuuddoo accepts the following command line options: | |
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-c Enable cchheecckk--oonnllyy mode. The existing _s_u_d_o_e_r_s file will be | --cc Enable _c_h_e_c_k_-_o_n_l_y mode. The existing _s_u_d_o_e_r_s file will be |
checked for syntax errors, owner and mode. A message will | checked for syntax errors, owner and mode. A message will be |
be printed to the standard output describing the status of | printed to the standard output describing the status of |
_s_u_d_o_e_r_s unless the --qq option was specified. If the check | _s_u_d_o_e_r_s unless the --qq option was specified. If the check |
completes successfully, vviissuuddoo will exit with a value of 0. | completes successfully, vviissuuddoo will exit with a value of 0. |
If an error is encountered, vviissuuddoo will exit with a value | If an error is encountered, vviissuuddoo will exit with a value of |
of 1. | 1. |
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-f _s_u_d_o_e_r_s Specify and alternate _s_u_d_o_e_r_s file location. With this | --ff _s_u_d_o_e_r_s Specify an alternate _s_u_d_o_e_r_s file location. With this option |
option vviissuuddoo will edit (or check) the _s_u_d_o_e_r_s file of your | vviissuuddoo will edit (or check) the _s_u_d_o_e_r_s file of your choice, |
choice, instead of the default, _/_e_t_c_/_s_u_d_o_e_r_s. The lock | instead of the default, _/_e_t_c_/_s_u_d_o_e_r_s. The lock file used is |
file used is the specified _s_u_d_o_e_r_s file with ".tmp" | the specified _s_u_d_o_e_r_s file with ``.tmp'' appended to it. In |
appended to it. In cchheecckk--oonnllyy mode only, the argument to | _c_h_e_c_k_-_o_n_l_y mode only, the argument to --ff may be `-', |
--ff may be "-", indicating that _s_u_d_o_e_r_s will be read from | indicating that _s_u_d_o_e_r_s will be read from the standard input. |
the standard input. | |
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-h The --hh (_h_e_l_p) option causes vviissuuddoo to print a short help | --hh The --hh (_h_e_l_p) option causes vviissuuddoo to print a short help |
message to the standard output and exit. | message to the standard output and exit. |
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-q Enable qquuiieett mode. In this mode details about syntax | --qq Enable _q_u_i_e_t mode. In this mode details about syntax errors |
errors are not printed. This option is only useful when | are not printed. This option is only useful when combined |
combined with the --cc option. | with the --cc option. |
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-s Enable ssttrriicctt checking of the _s_u_d_o_e_r_s file. If an alias is | --ss Enable _s_t_r_i_c_t checking of the _s_u_d_o_e_r_s file. If an alias is |
used before it is defined, vviissuuddoo will consider this a | used before it is defined, vviissuuddoo will consider this a parse |
parse error. Note that it is not possible to differentiate | error. Note that it is not possible to differentiate between |
between an alias and a host name or user name that consists | an alias and a host name or user name that consists solely of |
solely of uppercase letters, digits, and the underscore | uppercase letters, digits, and the underscore (`_') |
('_') character. | character. |
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-V The --VV (version) option causes vviissuuddoo to print its version | --VV The --VV (_v_e_r_s_i_o_n) option causes vviissuuddoo to print its version |
number and exit. | number and exit. |
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EENNVVIIRROONNMMEENNTT |
EENNVVIIRROONNMMEENNTT |
The following environment variables may be consulted depending on the | The following environment variables may be consulted depending on the |
value of the _e_d_i_t_o_r and _e_n_v___e_d_i_t_o_r _s_u_d_o_e_r_s variables: | value of the _e_d_i_t_o_r and _e_n_v___e_d_i_t_o_r _s_u_d_o_e_r_s settings: |
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VISUAL Invoked by visudo as the editor to use | VISUAL Invoked by vviissuuddoo as the editor to use |
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EDITOR Used by visudo if VISUAL is not set | EDITOR Used by vviissuuddoo if VISUAL is not set |
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FFIILLEESS |
FFIILLEESS |
_/_e_t_c_/_s_u_d_o_e_r_s List of who can run what | _/_e_t_c_/_s_u_d_o_e_r_s List of who can run what |
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_/_e_t_c_/_s_u_d_o_e_r_s_._t_m_p Lock file for visudo | _/_e_t_c_/_s_u_d_o_e_r_s_._t_m_p Lock file for visudo |
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DDIIAAGGNNOOSSTTIICCSS |
DDIIAAGGNNOOSSTTIICCSS |
sudoers file busy, try again later. | sudoers file busy, try again later. |
Someone else is currently editing the _s_u_d_o_e_r_s file. |
Someone else is currently editing the _s_u_d_o_e_r_s file. |
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/etc/sudoers.tmp: Permission denied | /etc/sudoers.tmp: Permission denied |
You didn't run vviissuuddoo as root. |
You didn't run vviissuuddoo as root. |
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Can't find you in the passwd database | Can't find you in the passwd database |
Your userid does not appear in the system passwd file. | Your user ID does not appear in the system passwd file. |
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Warning: {User,Runas,Host,Cmnd}_Alias referenced but not defined | Warning: {User,Runas,Host,Cmnd}_Alias referenced but not defined |
Either you are trying to use an undeclare | Either you are trying to use an undeclared |
{User,Runas,Host,Cmnd}_Alias or you have a user or host name listed |
{User,Runas,Host,Cmnd}_Alias or you have a user or host name listed |
that consists solely of uppercase letters, digits, and the |
that consists solely of uppercase letters, digits, and the |
underscore ('_') character. In the latter case, you can ignore the | underscore (`_') character. In the latter case, you can ignore the |
warnings (ssuuddoo will not complain). In --ss (strict) mode these are |
warnings (ssuuddoo will not complain). In --ss (strict) mode these are |
errors, not warnings. |
errors, not warnings. |
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Warning: unused {User,Runas,Host,Cmnd}_Alias | Warning: unused {User,Runas,Host,Cmnd}_Alias |
The specified {User,Runas,Host,Cmnd}_Alias was defined but never |
The specified {User,Runas,Host,Cmnd}_Alias was defined but never |
used. You may wish to comment out or remove the unused alias. In |
used. You may wish to comment out or remove the unused alias. In |
--ss (strict) mode this is an error, not a warning. |
--ss (strict) mode this is an error, not a warning. |
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Warning: cycle in {User,Runas,Host,Cmnd}_Alias | Warning: cycle in {User,Runas,Host,Cmnd}_Alias |
The specified {User,Runas,Host,Cmnd}_Alias includes a reference to |
The specified {User,Runas,Host,Cmnd}_Alias includes a reference to |
itself, either directly or through an alias it includes. This is |
itself, either directly or through an alias it includes. This is |
only a warning by default as ssuuddoo will ignore cycles when parsing |
only a warning by default as ssuuddoo will ignore cycles when parsing |
the _s_u_d_o_e_r_s file. |
the _s_u_d_o_e_r_s file. |
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SSEEEE AALLSSOO |
SSEEEE AALLSSOO |
_v_i(1), _s_u_d_o_e_r_s(4), _s_u_d_o(1m), _v_i_p_w(1m) | vi(1), sudoers(4), sudo(1m), vipw(1m) |
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AAUUTTHHOORR | AAUUTTHHOORRSS |
Many people have worked on ssuuddoo over the years; this version of vviissuuddoo | Many people have worked on ssuuddoo over the years; this version consists of |
was written by: | code written primarily by: |
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Todd Miller | Todd C. Miller |
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See the CONTRIBUTORS file in the ssuuddoo distribution | See the CONTRIBUTORS file in the ssuuddoo distribution |
(http://www.sudo.ws/sudo/contributors.html) for a list of people who | (http://www.sudo.ws/sudo/contributors.html) for an exhaustive list of |
have contributed to ssuuddoo. | people who have contributed to ssuuddoo. |
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CCAAVVEEAATTSS |
CCAAVVEEAATTSS |
There is no easy way to prevent a user from gaining a root shell if the | There is no easy way to prevent a user from gaining a root shell if the |
editor used by vviissuuddoo allows shell escapes. | editor used by vviissuuddoo allows shell escapes. |
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BBUUGGSS |
BBUUGGSS |
If you feel you have found a bug in vviissuuddoo, please submit a bug report | If you feel you have found a bug in vviissuuddoo, please submit a bug report at |
at http://www.sudo.ws/sudo/bugs/ | http://www.sudo.ws/sudo/bugs/ |
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SSUUPPPPOORRTT |
SSUUPPPPOORRTT |
Limited free support is available via the sudo-users mailing list, see | Limited free support is available via the sudo-users mailing list, see |
http://www.sudo.ws/mailman/listinfo/sudo-users to subscribe or search | http://www.sudo.ws/mailman/listinfo/sudo-users to subscribe or search the |
the archives. | archives. |
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DDIISSCCLLAAIIMMEERR |
DDIISSCCLLAAIIMMEERR |
vviissuuddoo is provided ``AS IS'' and any express or implied warranties, | vviissuuddoo is provided ``AS IS'' and any express or implied warranties, |
including, but not limited to, the implied warranties of | including, but not limited to, the implied warranties of merchantability |
merchantability and fitness for a particular purpose are disclaimed. | and fitness for a particular purpose are disclaimed. See the LICENSE |
See the LICENSE file distributed with ssuuddoo or | file distributed with ssuuddoo or http://www.sudo.ws/sudo/license.html for |
http://www.sudo.ws/sudo/license.html for complete details. | complete details. |
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| Sudo 1.8.7 June 12, 2013 Sudo 1.8.7 |
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1.8.5 March 14, 2012 VISUDO(1m) | |