Resolve Syntax Errors That Happen After Editing the
如何从脚本编辑/ etc / sudoers？ 中国服务器网 使用visudo这个自定义编辑器。 这解决了Brian解决方案中的所有竞争条件和“黑客”问题。 #!/bin/sh if [ -z "$1" ]; then echo "Starting up visudo with this script as first parameter" export EDITOR=$0 && sudo -E visudo else echo "Changing sudoers" echo "# Dummy Editing sudoers file - CentOS 2011-1-30 sudo - Sudoers file editing - Ask Ubuntu 2020-4-23 · If you use visudo, a validation of the file is done before you are returned to shell, allowing many bad typos or errors to be caught and allow them to be fixed (ie. you are returned to editor).This prevents the user being unable to use sudo to correct those errors (ie. used sudo vi in a latter command) if they are later detected. I usually used sudo vi myself, but am sure to have an escape
Dec 11, 2014 · Simply edit /etc/sudoers and change the Defaults line to read: Defaults env_reset,pwfeedback. Troubleshooting. If your changes don't seem to have had any effect, check that they are not trying to use aliases that are not defined yet and that no other user specifications later in the file are overriding what you are trying to accomplish.
visudo is a command that will use your default editor to edit the sudoers file. Editing this file without it can be a pain and is not recommended. You can change your preferred editor by issuing sudo update-alternatives --config editor – earthmeLon May 20 '13 at 23:38 sudoers is read-only. Yes, the file /etc/sudoers is intentionally set read-only, even for root! The explanation usually offered is that it was set up this way to ensure that admins only ever edit it via the command visudo. However, this theory doesn't quite hold water.
Nov 20, 2019 · Editing the sudoers File. To add users to the list of people who can use sudo, you need to edit the sudoers file. It is vitally important that you only ever do so using the visudo command. The visudo command prevents multiple people from trying to edit the sudoers file at once. Aug 14, 2018 · Edit sudoers with TextEdit or similar and you can easily corrupt the sudoers file. A corrupted sudoers file means admin access is completely impossible until the file is fixed or replaced. To edit sudoers, you’ll execute the visudo command in Terminal. Dec 05, 2018 · Alternative: Add User to Sudoers Configuration File If there’s a problem with the wheel group, or administrative policy prevents you from creating or modifying groups, you can add a user directly to the sudoers configuration file to grant sudo privileges. Aug 15, 2018 · Edit /etc/sudoers. As root, run visudo to edit /etc/sudoers and make the following changes. The advantage of using visudo is that it will validate the changes to the file.. The default /etc/sudoers file contains two lines for group wheel; the NOPASSWD: line is commented out. Adding a group to the sudoers file. In the sudoers file, you can add a user but you can also add an entire group which can be quite handy if you want to have specific rules for different groups. To add a group to the sudoers file, simply add a percent symbol at the beginning of the line. $ %sysadmins ALL=(ALL:ALL) NOPASSWD:ALL Oct 06, 2009 · When you run visudo, and you save and quit the file, visudo will inform you to click Enter to edit the include sudoers file. Once you have edited the file, sudo will pick up on syntax errors if any, as with the main file. Alternatively, to edit the include file directly, use: visudo -f /etc/sudo_static.rs6000. Using groups