取消sudo的密码

取消sudo的密码

终端输入sudo visudo，显示为以下内容：

我们只要修改其中的一点内容，就可以实现sudo不需要输入密码了

# /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# See the man page for details on how to write a sudoers file.
#

Defaults        env_reset

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL) ALL

# Uncomment to allow members of group sudo to not need a password
# (Note that later entries override this, so you might need to move
# it further down)
# %sudo ALL=NOPASSWD: ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL



找到

%admin ALL=(ALL) ALL

注释之，在下面加上

%admin ALL=(ALL) NOPASSWD: ALL

意思是属于admin组的用户可以不需要输入密码执行sudo

如果是

admin ALL=(ALL) NOPASSWD: ALL

也就是去掉百分号，意思就是admin这个用户可以执行sudo

这样做的好处是避免了输入错误，如果出错，退出之后会提示你出错，按e重新编辑，不会出现进不了sudo的情况，安全了很多 。

http://xsbl.org/post/48/