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»·¾³±äÁ¿ÊǺÍShell½ôÃÜÏà¹ØµÄ£¬Óû§µÇ¼ϵͳºó¾ÍÆô¶¯ÁËÒ»¸öShell¡£¶ÔÓÚLinuxÀ´ËµÒ»°ãÊÇbash£¬µ«Ò²¿ÉÒÔÖØÐÂÉ趨»òÇл»µ½ÆäËüµÄShell£¨Ê¹ÓÃchshÃüÁ¡£
¸ù¾Ý·¢Ðа汾µÄÇé¿ö£¬bashÓÐÁ½¸ö»ù±¾µÄϵͳ¼¶ÅäÖÃÎļþ£º/etc/bashrcºÍ/etc/profile¡£ÕâЩÅäÖÃÎļþ°üº¬Á½×鲻ͬµÄ±äÁ¿£ºshell±äÁ¿ºÍ»·¾³±äÁ¿¡£Ç°ÕßÖ»ÊÇÔÚÌØ¶¨µÄshellÖй̶¨£¨Èçbash£©£¬ºóÕßÔÚ²»Í¬shellÖй̶¨¡£ºÜÃ÷ÏÔ£¬shell±äÁ¿ÊǾֲ¿µÄ£¬¶ø»·¾³±äÁ¿ÊÇÈ«¾ÖµÄ¡£»·¾³±äÁ¿ÊÇͨ¹ýShellÃüÁîÀ´ÉèÖõģ¬ÉèÖúõĻ·¾³±äÁ¿ÓÖ¿ÉÒÔ±»ËùÓе±Ç°Óû§ËùÔËÐеijÌÐòËùʹÓ᣶ÔÓÚbashÕâ¸öShell³ÌÐòÀ´Ëµ£¬¿ÉÒÔͨ¹ý±äÁ¿ÃûÀ´·ÃÎÊÏàÓ¦µÄ»·¾³±äÁ¿£¬Í¨¹ýexportÀ´ÉèÖû·¾³±äÁ¿¡£
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±¾ÀýʹÓÃechoÏÔʾ³£¼ûµÄ±äÁ¿HOME
$ echo $HOME
/home/kevin
2.ÉèÖÃÒ»¸öÐµĻ·¾³±äÁ¿
$ export MYNAME=”my name is kevin”
$ echo $ MYNAME
my name is Kevin
3.ÐÞ¸ÄÒÑ´æÔڵĻ·¾³±äÁ¿
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$ MYNAME=”change name to jack”
$ echo $MYNAME
change name to jack
4.ʹÓÃenvÃüÁîÏÔʾËùÓеĻ·¾³±äÁ¿
$ env
HOSTNAME=localhost.localdomain
SHELL=/bin/bash
TERM=xterm
HISTSIZE=1000
SSH_CLIENT=192.168.136.151 1740 22
QTDIR=/usr/lib/qt-3.1
SSH_TTY=/dev/pts/0
……
5.ʹÓÃsetÃüÁîÏÔʾËùÓб¾µØ¶¨ÒåµÄShell±äÁ¿
$ set
BASH=/bin/bash
BASH_ENV=/root/.bashrc
……
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2.rpm ²é¿´²¢Ð¶ÔØÈí¼þ
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