linux添加用户

#跳板机添加用户

useradd leixiaolong   #install home Dir auto

cd /home/leixiaolong

mkdir .ssh

cd .ssh

touch authorized_keys

chmod 600 authorized_keys

chown -R leixiaolong: leixiaolong ../.ssh

#为用户增加sudo权限

echo "wuhan  ALL=(ALL) NOPASSWD: ALL " >>/etc/sudoers

visudo -c

# 编辑sudoers文件要用,不然readonly:

sudoedit  /etc/sudoers

#需要限制权限,可在末尾添加修改下面

wuhan ALL=(ALL) NOPASSWD: /bin/whoami,/bin/su,/bin/bash,!/bin/tcsh,!/usr/bin/passwd,!/usr/bin/passwd root,!/bin/vim /etc/sudoers,!/usr/bin/vim /etc/sudoers,!/usr/sbin/visudo,!/usr/bin/sudo -i,!/bin/bi /etc/ssh/*,!/bin/chmod 777 /etc/*,!/bin/chmod 777 *,!/bin/chmod 777,!/bin/chmod -R 777 *,!/bin/rm /*,!/bin/rm /,!/bin/rm -rf /,!/bin/rm -rf /*,!/bin/rm /etc,!/bin/rm -r /etc,!/bin/rm -rf /etc,!/bin/rm /etc/*,!/bin/rm -r /etc/*,!/bin/rm -rf /etc/*,!/bin/rm /root,!/bin/rm -r /root,!/bin/rm -rf /root,!/bin/rm /root/*,!/bin/rm -r /root/*,!/bin/rm -rf /root/*,!/bin/rm /bin,!/bin/rm -r /bin,!/bin/rm -rf /bin,!/bin/rm /bin/*,!/bin/rm -r /bin/*,!/bin/rm -rf /bin/*

#或者把用户加到某个目录的root组:

chown wuhan.root /var/log/mysqld.log