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
}