![]() Both of these have negative security implications. Common advice is to enable passwordless sudo, or extend the timeout of sudo remembering a password. This leads to a sudo password prompt which goes unnoticed and times out, at which point the process dies and the work done is lost or, at best, cached. Tips and tricks Disable password prompt timeoutĪ common annoyance is a long-running process that runs on a background terminal somewhere that runs with normal permissions and elevates only when needed. These permissions are set by default, but if you accidentally change them, they should be changed back immediately or sudo will fail. The file permissions must be set to 0440. The owner and group for the sudoers file must both be 0. Otherwise, see the sudoers(5) for detailed information. USER_NAME HOST_NAME= NOPASSWD: /usr/bin/halt,/usr/bin/poweroff,/usr/bin/reboot,/usr/bin/pacman -SyuĪ detailed sudoers example is available at /usr/share/doc/sudo/examples/sudoers. In particular such a line should be after the %wheel line if your user is in this group.Įnable explicitly defined commands only for user USER_NAME on host HOST_NAME without password: Note: The most customized option should go at the end of the file, as the later lines overrides the previous ones. To allow members of group wheel sudo access: To allow a user to run all commands as any user but only on the machine with hostname HOST_NAME: To allow a user to gain full root privileges when they precede a command with sudo, add the following line: # Set default EDITOR to restricted version of nano, and do not allow visudo to use EDITOR/VISUAL.ĭefaults editor=/usr/bin/rnano, !env_editor To change the editor of choice permanently system-wide only for visudo, add the following to /etc/sudoers (assuming nano is your preferred editor): To change the editor permanently, see Environment variables#Per user. This might come in handy in case you want to circumvent locking the file with visudo. ![]() To establish nano as the visudo editor for the duration of the current shell session, export EDITOR=nano to use a different editor just once simply set the variable before calling visudo:Īlternatively you may edit a copy of the /etc/sudoers file and check it using visudo -c /copy/of/sudoers. The sudo package is compiled with -with-env-editor and honors the use of the SUDO_EDITOR, VISUAL and EDITOR variables. ![]()
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