Ubuntu 20.04: sudo without password

06日 8月 2021

This article will describe how to omit sudo password.

1 Add NOPASSWD to sudo group in /etc/sudoers

You can edit /etc/sudoers with visudo interactively. This article will edit /etc/sudoers with sed non-interactively. sudo needs password yet.

$ sudo sed -i /etc/sudoers -e ‘s/^%sudo.*/%sudo ALL=(ALL:ALL) NOPASSWD:ALL/g'[sudo] password for hiroom2:

The /etc/sudoers is the following after adding NOPASSWD. sudo does not need password.

## This file MUST be edited with the ‘visudo’ command as root.## Please consider adding local content in /etc/sudoers.d/ instead of# directly modifying this file.## See the man page for details on how to write a sudoers file.#Defaults env_resetDefaults mail_badpassDefaults secure_path=”/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin”# Host alias specification# User alias specification# Cmnd alias specification# User privilege specificationroot ALL=(ALL:ALL) ALL# Members of the admin group may gain root privileges%admin ALL=(ALL) ALL# Allow members of group sudo to execute any command%sudo ALL=(ALL:ALL) NOPASSWD:ALL# See sudoers(5) for more information on “#include” directives:#includedir /etc/sudoers.d ]]> tagPlaceholderカテゴリ: sudo, en, ubuntu-2004

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