Difference between revisions of "Understanding sudo configuration syntax"

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<yambe:breadcrumb>Sudo configuration</yambe:breadcrumb>
[[Main Page|Home]] > [[CentOS]] > [[CentOS 6.x]] > [[Sudo configuration]] > [[Understanding sudo configuration syntax|Sudo configuration syntax]]
=Sudo configuration syntax=


Lines in sudo configuration use following format:
Lines in sudo configuration use following format:
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will allow user '<tt>saurabh</tt>' to run '<tt>/usr/sbin/wireshark</tt>' and '<tt>/usr/sbin/tcpdump</tt>' commands on machine '<tt>barjatiya</tt>' without supplying password as root user.
will allow user '<tt>saurabh</tt>' to run '<tt>/usr/sbin/wireshark</tt>' and '<tt>/usr/sbin/tcpdump</tt>' commands on machine '<tt>barjatiya</tt>' without supplying password as root user.


Please note that by default sudo requires tty.  Hence running sudo commands from services such as MySQL, apache, nagios, etc. which do not have tty may not work.  To change this default behavior comment 'Defaults Requiretty' in /etc/sudoers using visudo.








 
[[Main Page|Home]] > [[CentOS]] > [[CentOS 6.x]] > [[Sudo configuration]] > [[Understanding sudo configuration syntax|Sudo configuration syntax]]
<yambe:breadcrumb>Sudo configuration</yambe:breadcrumb>

Latest revision as of 13:38, 14 July 2022

Home > CentOS > CentOS 6.x > Sudo configuration > Sudo configuration syntax

Lines in sudo configuration use following format:

<username> or %<group> <machine> = [(<user>)] [NOPASSWD] :<command1> [, <command2> ...]

Note that group is indicated using %sign.


For example:

saurabh barjatiya = (root) NOPASSWD: /usr/sbin/wireshark, /usr/sbin/tcpdump

will allow user 'saurabh' to run '/usr/sbin/wireshark' and '/usr/sbin/tcpdump' commands on machine 'barjatiya' without supplying password as root user.

Please note that by default sudo requires tty. Hence running sudo commands from services such as MySQL, apache, nagios, etc. which do not have tty may not work. To change this default behavior comment 'Defaults Requiretty' in /etc/sudoers using visudo.



Home > CentOS > CentOS 6.x > Sudo configuration > Sudo configuration syntax