全部博文(113)
分类: LINUX
2012-01-04 20:19:56
Linux中查见的ls命令,但凡使用过linux的朋友都会明白这个命令的用处,对于这个常用的命令,我们平时可能只是使用一些简单的参数,今天有空man ls看了一下说明,看似简单的命令中还是有许多的参数可以简化的我们的工作,提高效率的。
注:本实例在REDHAT上实现的,我的机器版本如下:
mounix.com$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
mounix.com$
ls命令中有一个-S的参数,主要是用来排序的,要与-l命令一同使用。
具体说明见下面的man手册
-S sort by file size
--sort=WORD
extension -X, none -U, size -S, time -t, version -v, status -c, time -t, atime -u,
access -u, use -u
--time=WORD
with -l, show time as WORD instead of modification time: atime, access, use, ctime or
status; use specified time as sort key if --sort=time
--time-style=STYLE
with -l, show times using style STYLE: full-iso, long-iso, iso, locale, +FORMAT.
FORMAT is interpreted like ‘date’; if FORMAT is FORMAT1
applies to non-recent files and FORMAT2 to recent files; if STYLE is prefixed with
‘posix-’, STYLE takes effect only outside the POSIX locale
其中的--time-style 参数可以让我们定义输出的时间格式,格式的写法与date中的写法一致。
下面是实例:
m$ date "+%Y-%m-%d %H:%M:%S"
2012-01-04 20:34:28
mounix.com$ cd /
m$ ls -dlS --time-style="+%Y-%m-%d %H:%M:%S" *
drwx------ 2 root root 16384 2011-08-25 00:49:26 lost+found
drwxr-xr-x 109 root root 12288 2012-01-02 04:04:10 etc
drwxr-xr-x 2 root root 12288 2011-08-24 18:19:07 sbin
drwxr-xr-x 2 root root 4096 2011-11-30 09:26:00 bin
drwxr-xr-x 10 root root 4096 2011-12-23 09:08:31 data
drwxr-xr-x 9 root root 4096 2011-12-13 11:38:02 home
drwxr-xr-x 11 root root 4096 2011-08-24 18:18:47 lib
drwxr-xr-x 7 root root 4096 2011-08-24 18:18:47 lib64
drwxr-xr-x 4 root root 4096 2011-12-13 18:09:18 macro
drwxr-xr-x 2 root root 4096 2008-08-08 23:26:51 media
drwxr-xr-x 2 root root 4096 2009-07-29 21:34:57 misc
drwxr-xr-x 2 root root 4096 2008-08-08 23:26:51 mnt
drwxr-xr-x 4 root root 4096 2011-11-30 09:25:16 opt
drwxr-x--- 22 root root 4096 2011-12-23 14:57:58 root
drwxr-xr-x 2 root root 4096 2011-08-24 16:50:04 selinux
drwxr-xr-x 2 root root 4096 2008-08-08 23:26:51 srv
drwxr-xr-x 3 root root 4096 2011-08-24 16:57:15 tftpboot
drwxrwxrwt 7 root root 4096 2012-01-04 14:13:48 tmp
drwxr-xr-x 16 root root 4096 2011-08-26 09:25:20 usr
drwxr-xr-x 26 root root 4096 2011-11-30 09:25:25 var
drwxr-xr-x 14 root root 4000 2011-10-25 16:36:04 dev
drwxr-xr-x 4 root root 1024 2011-08-24 16:55:03 boot
dr-xr-xr-x 151 root root 0 2011-08-25 01:09:20 proc
drwxr-xr-x 11 root root 0 2011-08-25 01:09:23 sys
m$ pwd
/
m$