whoami and id -ru

本文介绍如何使用whoami和id-ru命令来判断当前登录用户是否为root用户。主要分为两种情况:当用户为root时的显示结果及非root用户的显示结果。

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通过whoami 和id -ru 可以判断当前用户是否是root用户

1:root 用户执行的情况

2:非root 用户


# /etc/profile # System wide environment and startup programs, for login setup # Functions and aliases go in /etc/bashrc # It's NOT a good idea to change this file unless you know what you # are doing. It's much better to create a custom.sh shell script in # /etc/profile.d/ to make custom changes to your environment, as this # will prevent the need for merging in future updates. pathmunge () { case ":${PATH}:" in *:"$1":*) ;; *) if [ "$2" = "after" ] ; then PATH=$PATH:$1 else PATH=$1:$PATH fi esac } if [ -x /usr/bin/id ]; then if [ -z "$EUID" ]; then # ksh workaround EUID=`/usr/bin/id -u` UID=`/usr/bin/id -ru` fi USER="`/usr/bin/id -un`" LOGNAME=$USER MAIL="/var/spool/mail/$USER" fi # Path manipulation if [ "$EUID" = "0" ]; then pathmunge /usr/sbin pathmunge /usr/local/sbin else pathmunge /usr/local/sbin after pathmunge /usr/sbin after fi HOSTNAME=$(/usr/bin/hostname 2>/dev/null) || \ HOSTNAME=$(/usr/bin/uname -n 2>/dev/null) || \ HOSTNAME=$(/usr/bin/hostnamectl --transient 2>/dev/null) || echo "System commands: hostname uname and hostnamectl, which do not exist." HISTSIZE=10000 if [ "$HISTCONTROL" = "ignorespace" ] ; then export HISTCONTROL=ignoreboth else export HISTCONTROL=ignoredups fi export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL for i in /etc/profile.d/*.sh /etc/profile.d/sh.local ; do if [ -r "$i" ]; then if [ "${-#*i}" != "$-" ]; then . "$i" else . "$i" >/dev/null fi fi done unset i unset -f pathmunge # Source global bash config, when interactive but not posix or sh mode if test "$BASH" &&\ test -z "$POSIXLY_CORRECT" &&\ test "${0#-}" != sh &&\ test -r /etc/bashrc then # Bash login shells run only /etc/profile # Bash non-login shells run only /etc/bashrc # Check for double sourcing is done in /etc/bashrc. . /etc/bashrc fi export TMOUT=300 export HISTTIMEFORMAT="[%F %T `whoami`] " export PATH=$PATH:/root/srv/node-v20.12.2-linux-arm64/bin 后面加个nginx 的
03-08
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