Goodspeed

摘要：[root@localhost ~]# echo ${MAIL}/var/spool/mail/root[root@localhost ~]# echo ${MAIL##/*/} #贪婪前匹配删除root[root@localhost ~]# echo ${MAIL#/*/} #前匹配删除spool/mail/root[root@localhost ~]# echo ${MAIL%/*} #后匹配删除/var/spool/mail[root@localhost ~]# echo ${MAIL%%/*} #贪婪后匹配删除[root@localhost ~]# echo ${MAIL//oo/aa 阅读全文

摘要：在终端中输入后退，会显示成^H执行下面的代码echo -e "stty erase ˆH" >> ~/.profileˆH 按住Control-V and Control-H.使其应用上source ~/.profile 阅读全文