??????1???????
????[root@lx_web_s1 ~]# export PATH=/usr/local/webserver/mysql/bin:$PATH
??????β???
[root@lx_web_s1 ~]# echo $PATH
/usr/local/webserver/mysql/bin:/usr/local/webserver/mysql/bin/:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
??????????PATH?????
??????????????PATH ???????? ???????????????????????/etc/profile????PATH??????????????μ?.bashrc(????~/.bashrc)??
??????2???????
????# vim /etc/profile
??????????:
????export PATH=$PATH??/usr/local/webserver/mysql/bin
???????棬???????????У?
????#source /etc/profile
????????????????