Linux under sudo command

 from The local systemadministrator. It usually boils down to these three things:    #1) Respect the privacy of others.    #2) Think before you type.    #3for isn't in thesudoers file.  This incident would be reported.

Linux By default does not open sudo permissions for the current user (except root)!

One: Enter the Super User

[email protected] root]$ Su-

Two: Start editing and editing /etc/sudoersFile

[Email protected] etc]# Ls-al | grep sudo -r--r-----.   1 root root   4002 Mar  2     sudoers #对其进行操作drwxr-x---.   2 root root   4096    sudoers.d-r--r-----.   1 root root   1031   sudo-ldap.conf

(1) Force write (or give permission first, then remove permission)

[Email protected] etc]# vim sudoers

(2) Find root all= (all) All this line, add the Run sudo permission below for the required user

Root    all=(All)       Alluserld  all = (all) all       #默认是需要去输入userld用户的密码, when Sudo is executed
Userld  all= (All)       Nopasswd:all #是不需要去输入密码的

(3) The user group can also be operated, consistent with the above

% User Group  all=(All) all       #默认是需要去输入userld用户的密码, when Sudo is executed% user Group  all = (All)       Nopasswd:all # There's no need to enter a password.

Three: Testing

[[email protected] root]$ ls #默认是不允许去操作root目录的, permission not allowed  New  in/var/spool/mail/root[[email protected] root]$ lsls:cannot Open Directory.: Permission denied[ [email protected] root]$ sudo ls #使用sudo执行, user ordinary user to perform some or all of the administrator commands Anaconda-ks.cfg  Documents    Install.log.syslog  public     videosapplication      Downloads    Music               templatesdesktop          Install.log  Pictures            test

Linux under sudo command