[root@cdgv240c SORT]# ls -l (字数限制删了点)
total 26
-rw-r--r-- 1 root root 12 Jun 6 2012 dc_version
-rw-r--r-- 1 root root 2078 Jun 8 13:06 readme.txt
-rwxr-xr-x 1 root root 2791 Feb 29 2012 runTC.sh
[root@cdgv240c SORT]# ls -lt | head -n2
total 26
-rw-r--r-- 1 root root 12 Jun 6 2012 dc_version
按说应该是 readme.txt 才对啊