適用場景：centos7
修改linux服務器的文件，建議先備份，再進行修改

如果不小心把此文件破壞了，想恢復，可以先把源文件備份，將源文件內容刪除，下面內容重新粘貼即可

# /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 [ "$2" = "after" ] ; thenPATH=$PATH:$1elsePATH=$1:$PATHfiesac }if [ -x /usr/bin/id ]; thenif [ -z "$EUID" ]; then# ksh workaroundEUID=`/usr/bin/id -u`UID=`/usr/bin/id -ru`fiUSER="`/usr/bin/id -un`"LOGNAME=$USERMAIL="/var/spool/mail/$USER" fi# Path manipulation if [ "$EUID" = "0" ]; thenpathmunge /usr/sbinpathmunge /usr/local/sbin elsepathmunge /usr/local/sbin afterpathmunge /usr/sbin after fiHOSTNAME=`/usr/bin/hostname 2>/dev/null` HISTSIZE=1000 if [ "$HISTCONTROL" = "ignorespace" ] ; thenexport HISTCONTROL=ignoreboth elseexport HISTCONTROL=ignoredups fiexport PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL# By default, we want umask to get set. This sets it for login shell # Current threshold for system reserved uid/gids is 200 # You could check uidgid reservation validity in # /usr/share/doc/setup-*/uidgid file if [ $UID -gt 199 ] && [ "`/usr/bin/id -gn`" = "`/usr/bin/id -un`" ]; thenumask 002 elseumask 022 fifor i in /etc/profile.d/*.sh /etc/profile.d/sh.local ; doif [ -r "$i" ]; thenif [ "${-#*i}" != "$-" ]; then . "$i"else. "$i" >/dev/nullfifi doneunset i unset -f pathmunge

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