#模拟故障：-bash-4.1$
[root@nodchen ~]# su - cisco
[cisco@nodchen ~]$ \rm -f .*
rm: cannot remove `.': Is a directory
rm: cannot remove `..': Is a directory
[cisco@nodchen ~]$ ls -a
. .. a p
[cisco@nodchen ~]$ logout
[root@nodchen ~]# su - cisco
#解决方法
-bash-4.1$ cp /etc/skel/.bash* ~ 故障恢复
-bash-4.1$ logout
[root@nodchen ~]# su - cisco
[cisco@nodchen ~]$