ubuntu默认用户sudo不使用密码 chunli@ubuntu~$ sudo vim /etc/sudoers 行尾追加一行，防止被其他策略覆盖 chunli ALL = NOPASSWD: ALL 打开一个终端，试试执行sudo apt-get update
root@itsm-demo:~# apt-get install -y sudo
root@itsm-demo:~# vim /etc/sudoers 为已经存在的user1用户授权 # # 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_reset Defaults mail_badpass Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" # Host alias specification # User alias specification # Cmnd alias specification # User privilege specification root ALL=(ALL:ALL) ALL user1 ALL=(ALL:ALL) ALL # Allow members of group sudo to execute any command %sudo ALL=(ALL:ALL) ALL # See sudoers(5) for more information on "#include" directives: #includedir /etc/sudoers.d 强制保存： :w!
不需要密码，直接切换到root
pi
chunli
# # 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_reset Defaults mail_badpass Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" # Host alias specification # User alias specification # Cmnd alias specification # User privilege specification root ALL=(ALL:ALL) ALL # Allow members of group sudo to execute any command %sudo ALL=(ALL:ALL) ALL # See sudoers(5) for more information on "#include" directives: #includedir /etc/sudoers.d pi ALL=(ALL) NOPASSWD: ALL chunli ALL=(ALL) NOPASSWD: ALL
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