[root@hadoop01 ~]# ll
total 156
drwxr-xr-x. 18 root   root    4096 Jan  5 05:05 apps
-rw-r--r--.  1 root   root     156 Jul 24 21:47 common-friends.log
drwxr-xr-x.  2 root   root    4096 Oct  9 09:18 data
drwxr-xr-x.  2 root   root    4096 Aug 29 01:52 esdata
-rw-r--r--.  1 root   root    2231 Jul 24 22:00 flow.dat
drwxr-xr-x.  9 root   root    4096 Oct  8 08:13 flume
drwxr-xr-x.  2 root   root    4096 Oct 30 18:30 hadooptest
drwxr-xr-x.  5 root   root    4096 Oct  4 15:12 hdpdata
drwxr-xr-x.  4 root   root    4096 Oct  5 10:17 hivedata
drwxr-xr-x.  3 root   root    4096 Sep 25 13:59 journaldata
drwxr-xr-x.  5 root   root    4096 Oct 13 13:55 logs
drwxr-xr-x.  2 root   root    4096 Oct 22 09:46 out123
-rwxr-xr-x.  1 root   root    4482 Aug 19 09:57 PWD
drwxr-xr-x.  3 root   root    4096 Dec 21 07:02 soft
drwxr-xr-x. 12 hadoop hadoop  4096 Jun 21  2016 spark-1.6.2-bin-hadoop2.6
drwxr-xr-x.  9 root   root    4096 Oct 10 10:23 sqoop
drwxr-xr-x.  5 root   root    4096 Nov 17 08:17 storm-local
-rw-r--r--.  1 root   root     660 Aug 28 06:33 storm.yaml
-rw-r--r--.  1 root   root     124 Sep 28 10:06 user_prefer.sh
-rw-r--r--.  1 root   root    7495 Nov 16 03:42 wordcount.jar
-rw-r--r--.  1 root   root      56 Oct 13 16:46 word.txt
drwxr-xr-x.  3 root   root    4096 Jan  5 18:49 zkdata
-rw-r--r--.  1 root   root   54453 Jan  5 18:49 zookeeper.out
[root@hadoop01 ~]# du -sh .           [对当前目录下所有的目录和文件的大小进行汇总,-s表示汇总,-h表示以KB, MB, GB, TB格式进行人性化显示]
6.6G    .
[root@hadoop01 ~]# du -sh *           [对当前目录下每一个目录和文件的大小分别进行汇总]
3.2G    apps
4.0K    common-friends.log
416K    data
4.0K    esdata
4.0K    flow.dat
82M     flume
4.0K    hadooptest
150M    hdpdata
92M     hivedata
66M     journaldata
344M    logs
16K     out123
8.0K    PWD
2.2G    soft
303M    spark-1.6.2-bin-hadoop2.6
27M     sqoop
52K     storm-local
4.0K    storm.yaml
4.0K    user_prefer.sh
8.0K    wordcount.jar
4.0K    word.txt
260M    zkdata
60K     zookeeper.out
[root@hadoop01 ~]# du -sh apps           [对指定的目录的大小进行汇总]
3.2G    apps
[root@hadoop01 ~]# du -sh logs/*         [对指定的目录下面所有的子目录和文件的大小分别进行汇总]
39M     logs/click_log
8.0K    logs/es-logs
306M    logs/kafka-logs
380K    logs/test.log
[root@hadoop01 ~]# du -sh *|grep [M]     [对当前目录下所有的目录和文件分别进行汇总,并使用"grep [M]"筛选出所有大小为M(兆)级别的目录和文件]
82M     flume
150M    hdpdata
92M     hivedata
66M     journaldata
344M    logs
303M    spark-1.6.2-bin-hadoop2.6
27M     sqoop
260M    zkdata
[root@hadoop01 ~]# du -sh *|grep [G]     [筛选出大小为GB级别的目录和文件]
3.2G    apps
2.2G    soft
[root@hadoop01 ~]# du -sh *|grep [MG]    [筛选出大小为MB和GB级别的目录和文件]
3.2G    apps
82M     flume
150M    hdpdata
92M     hivedata
66M     journaldata
344M    logs
2.2G    soft
303M    spark-1.6.2-bin-hadoop2.6
27M     sqoop
260M    zkdata
[root@hadoop01 ~]# du -sh *|grep [MG]|sort -nr    　[筛选出大小为MB和GB级别的目录和文件，并降序排序]
344M    logs
303M    spark-1.6.2-bin-hadoop2.6
260M    zkdata
150M    hdpdata
92M     hivedata
82M     flume
66M     journaldata
27M     sqoop
3.2G    apps
2.2G    soft
[root@hadoop01 ~]#