Linux 中的通配符详解及实例_linux shell_

 [root@localhost ~]# mkdir dy [root@localhost ~]# cd dy [root@localhost dy]# touch dzp dzp2 dzp3 dzp34 dzpcang dzpbols [root@localhost dy]# ls dzp dzp2 dzp3 dzp34 dzpbols dzpcang [root@localhost dy]# la dzp bash: la: command not found... [root@localhost dy]# ls dzp dzp [root@localhost dy]# ls dzp* dzp dzp2 dzp3 dzp34 dzpbols dzpcang [root@localhost dy]# ls dzp? dzp2 dzp3 [root@localhost dy]# ls dzp[0-9] dzp2 dzp3 [root@localhost dy]# ls dzp[0-9][0-9] dzp34 [root@localhost dy]# ls dzp[^0-9] ls: cannot access dzp[^0-9]: No such file or directory [root@localhost dy]# touch dzpa [root@localhost dy]# ls dzp[^0-9] dzpa [root@localhost dy]# ls dzp[^0-9]* dzpa dzpbols dzpcang 

 [root@localhost dy]# echo ls ls [root@localhost dy]# echo dzp dzp [root@localhost dy]# aa=123 [root@localhost dy]# echo $aa 123 [root@localhost dy]# echo '$aa' $aa [root@localhost dy]# echo "$aa" 123 [root@localhost dy]# aa=ls [root@localhost dy]# echo "$aa" ls [root@localhost dy]# aa=`ls` [root@localhost dy]# echo "$aa" dzp dzp2 dzp3 dzp34 dzpa dzpbols dzpcang [root@localhost dy]# bb=$(ls) [root@localhost dy]# echo $bb dzp dzp2 dzp3 dzp34 dzpa dzpbols dzpcang [root@localhost dy]# echo $(date) Sat Jul 15 17:23:31 CST 2017 [root@localhost dy]# echo \$bb $bb