linux shell 判断当前用户锦集

如何判断当前用户是否是root  呢？

判断当前用户是否是root

 

#---------------------------- 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
}