Sudo: Difference between revisions
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→sudo: sorry, you must have a tty to run sudo: WP content http://leo.steamr.com/2011/05/sudo-sorry-you-must-have-a-tty-to-run-sudo/ |
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=== sudo: sorry, you must have a tty to run sudo === | === sudo: sorry, you must have a tty to run sudo === | ||
If you get the error while trying to run {{code|sudo}} through a script or a non-interactive shell: | |||
{{highlight|lang=text|code= | |||
sudo: sorry, you must have a tty to run sudo | |||
}} | |||
Ensure that you do not require a TTY in your {{code|/etc/sudoers}} configuration. Either comment out or use {{code|!requiretty}}. | |||
{{highlight|lang=text|code= | |||
## In /etc/sudoers | |||
## From | |||
Defaults requiretty | |||
## To one of: | |||
Defaults !requiretty | |||
# Defaults requiretty | |||
}} | |||
'''A one-liner to fix this:''' | |||
{{highlight|lang=terminal|code= | {{highlight|lang=terminal|code= | ||
# | # sed -i s'/Defaults requiretty/#Defaults requiretty'/g /etc/sudoers | ||
}} | }} | ||
As a side note, if you just want to run a command as another user, you could also try {{code|su}} instead. For example: | |||
{{highlight|lang=terminal|code= | {{highlight|lang=terminal|code= | ||
# su $username -c 'whoami' | # su $username -c 'whoami' | ||
Revision as of 03:35, 12 September 2019
Overview
In a nutshell, sudo permissions are defined in /etc/sudoers and /etc/sudoers.d/. Permissions are defined like so:
%groupname workstation=/bin/command
username workstation=/bin/command
username workstation=(run-as user) /bin/command
Replace any of the above with ALL to have it match anyone. eg:
ALL ALL=ALL
You can use NOPASSWD: /bin/command to have it not prompt for the user's password.
You can verify whether your changes worked by listing sudo access:
# sudo -l
Configure sudo to include /etc/sudoers.d/
Additional sudo configs can be placed in /etc/sudoers.d/. Files placed here must have the permissions set to 0440.
For example:
# cd /etc/sudoers.d
# echo "gandalf ALL=(root) NOPASSWD: /usr/sbin/dmidecode" > run_dmidecode
# chmod 0440 run_dmidecode
Ensure the #includedir directive is defined in /etc/sudoers.
Troubleshooting
sudo: sorry, you must have a tty to run sudo
If you get the error while trying to run sudo through a script or a non-interactive shell:
sudo: sorry, you must have a tty to run sudo
Ensure that you do not require a TTY in your /etc/sudoers configuration. Either comment out or use !requiretty.
## In /etc/sudoers
## From
Defaults requiretty
## To one of:
Defaults !requiretty
# Defaults requiretty
A one-liner to fix this:
# sed -i s'/Defaults requiretty/#Defaults requiretty'/g /etc/sudoers
As a side note, if you just want to run a command as another user, you could also try su instead. For example:
# su $username -c 'whoami'
sudo: no tty present and no askpass program specified
make sure you have NOPASSWD set in your sudoers file. Eg. The files should have a line like:
<USER> <host>=NOPASSWD:<command>