linux中怎么判断当前用户是否是root

这期内容当中小编将会给大家带来有关linux中怎么判断当前用户是否是root，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

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
代码如下:

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

上述就是小编为大家分享的linux中怎么判断当前用户是否是root了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注编程网操作系统频道。