linux如何判断当前用户

linux如何判断当前用户

 

linux 中，如何判断当前用户是否是root  呢？

判断当前用户是否是root  www.2cto.com  

Shell代码  

#---------------------------- root user check ---------------------start     

if [ `id -u` -ne 0 ]; then    

    echo "Please re-run ${this_file} as root."    

    exit 1     

fi     

#---------------------------- root user check ---------------------end    

   

  

if [ x"$USER" = x"" ];then    

    if  id |grep "^uid=0(root)">/dev/null ;then    

        :     

    else    

        echo "Please rerun `basename $0` as root ."    

        exit 1     

    fi     

else    

    if [ ! x"$USER" = x"root" ];then    

        echo "Please rerun `basename $0` as root ."    

        exit 1     

    fi     

fi    

  

#=============== check current user start ================     

if [ ! $USER = root  ];then    

    echo "Please rerun this script as root ."    

    exit 1     

fi     

#=============== check current user end ================    

   

#!/bin/sh     

if  id |grep "^uid=0(root)">/dev/null ;then    

    echo is  root     

else    

    echo not  root     

fi     

   

check_user(){     

    if [ $UID -ne 0 ];then    

        echo "Current user is not ROOT."    

        echo "Please rerun the installer as Root user."    

        exit 11     

    fi     

}