原文地址http://www.cnblogs.com/alaigle/archive/2012/06/19/2554598.html
1、直接用export命令:#export PATH=$PATH:/opt/au1200_rm/build_tools/bin
查看是否已經設好,可用命令export查看:
[root@localhost bin]# export
declare -x BASH_ENV="/root/.bashrc"
declare -x G_BROKEN_FILENAMES="1"
declare -x HISTSIZE="1000"
declare -x HOME="/root"
declare -x HOSTNAME="localhost.localdomain"
declare -x INPUTRC="/etc/inputrc"
declare -x LANG="zh_CN.GB18030"
declare -x LANGUAGE="zh_CN.GB18030:zh_CN.GB2312:zh_CN"
declare -x LESSOPEN="|/usr/bin/lesspipe.sh %s"
declare -x LOGNAME="root"
declare -x LS_COLORS="no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:*.png=01;35:*.tif=01;35:"
declare -x MAIL="/var/spool/mail/root"
declare -x OLDPWD="/opt/au1200_rm/build_tools"
declare -x PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin:/opt/au1200_rm/build_tools/bin"
declare -x PWD="/opt/au1200_rm/build_tools/bin"
declare -x SHELL="/bin/bash"
declare -x SHLVL="1"
declare -x SSH_ASKPASS="/usr/libexec/openssh/gnome-ssh-askpass"
declare -x SSH_AUTH_SOCK="/tmp/ssh-XX3LKWhz/agent.4242"
declare -x SSH_CLIENT="10.3.37.152 2236 22"
declare -x SSH_CONNECTION="10.3.37.152 2236 10.3.37.186 22"
declare -x SSH_TTY="/dev/pts/2"
declare -x TERM="linux"
declare -x USER="root"
declare -x USERNAME="root"
可以看到,環境變量已經設好,PATH裡面已經有了我要加的編譯器的路徑。
2、修改profile文件: #vi /etc/profile
在裡面加入:
export PATH="$PATH:/opt/au1200_rm/build_tools/bin"
3. 修改.bashrc文件:# vi /root/.bashrc
在裡面加入:
export PATH="$PATH:/opt/au1200_rm/build_tools/bin"
後兩種方法一般需要重新注銷系統才能生效,最後可以通過echo命令測試一下:# echo $PATH
看看輸出裡面是不是已經有了/my_new_path這個路徑了。