[root@localhost bin]# echo $PATH /usr/kerberos/sbin:/sybase/$SYBASE_FTS/bin:/sybase/OCS-12_5/bin:/sybase/RPL-12_5/bin:/sybase/JS-12_5/bin:/sybase/ASE-12_5/bin:/sybase/ASE-12_5/install:/usr/kerberos/bin:/usr/bin:/bin:/usr/sbin:/sbin:/home/sybase/binTH=/usr/kerberos/bin:/usr/bin:/bin:/usr/sbin:/sbin:/home/sybase/bin:/usr/include:/sybase/ASE-15_0/bin:/sybase/ASE-15_0/install:.
[root@localhost bin]# echo $PATH|grep /usr/local/bin/pthon2.6 [root@localhost bin]# echo $PATH|grep /usr/local/bin/pthon [root@localhost bin]# export PATH=$PATH:/usr/local/bin/python2.6
原文：http://my.oschina.net/u/1866459/blog/494006