刚安装好的Debian默认还没有sudo功能。
1、安装sudo
# apt-get install sudo
2、编辑 /etc/sudoers ,添加如下行
# visudo
root ALL=(ALL:ALL) ALL
user ALL=(ALL:ALL) ALL 用户user执行sudo时需要密码。
#user ALL=NOPASSWD:ALL 用户user执行sudo时不需要密码。
#user ALL=NOPASSWD:/etc/network/interfaces 用户user执行只有sudo执行/etc/network/interfaces的权限,执行时不需要密码。
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