sudo is a permission management mechanism. Administrators can authorize ordinary users to perform operations that only root can perform without knowing the root password. The default configuration is stored in the /etc/sudoers file.
Syntax format: sudo [parameter]
Common parameters:
Example
# 切换到root sudo su
# 列出目前的权限sudo -l
# 以root权限执行命令ifconfig -a sudo ifconfig -a
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