linux shell命令之-------------------du命令

du命令显示文件(包括目录)的磁盘使用情况，默认情况下，递归显示当前目录下所有文件夹的磁盘使用情况

[e-mail]:~/test/pipe>ls -al
总用量 104
drwxrwxr-x  4 gwwu gwwu  4096 4月  15 15:30 .
drwxr-xr-x 35 gwwu gwwu  4096 4月   9 16:32 ..
-rwxrwxr-x  1 gwwu gwwu  8947 4月  14 09:32 add2
-rw-rw-r-- 1 gwwu gwwu   635 4月  14 09:32 add2.c
-rwxrwxr-x  1 gwwu gwwu 13199 4月  14 10:10 add2_filter
-rw-rw-r-- 1 gwwu gwwu  2041 4月  14 10:10 add2_filter.c
drwxrwxr-x  2 gwwu gwwu  4096 4月  15 15:30 fifo
-rwxrwxr-x  1 gwwu gwwu 10472 4月  14 16:43 myuclc
-rw-r--r-- 1 gwwu gwwu   519 4月  14 16:45 myuclc.c
-rwxrwxr-x  1 gwwu gwwu  9748 4月   8 17:42 pipe
-rw-r--r-- 1 gwwu gwwu   702 4月   8 17:42 pipe.c
-rwxrwxr-x  1 gwwu gwwu 12577 4月  13 15:20 pipe_more
-rw-rw-r-- 1 gwwu gwwu  1981 4月  13 15:20 pipe_more.c
drwxrwxr-x  2 gwwu gwwu  4096 4月  15 15:29 popen

[e-mail]:~/test/pipe>du
28 ./fifo
72 ./popen
192 .

常用的option选项
-a, --all
              write counts for all files, not just directories  所有文件，不仅仅是目录的总值。
-b, --bytes
              equivalent to ‘--apparent-size --block-size=1’  以字节大小显示
-h, --human-readable  以适合操作者阅读的方式
              print sizes in human readable format (e.g., 1K 234M 2G)
-s, --summarize   仅显示目录总大小
              display only a total for each argument

[e-mail]:~/test/pipe>du
28 ./fifo
72 ./popen
192 .
[e-mail]:~/test/pipe>du -h
28K ./fifo
72K ./popen
192K .
[e-mail]:~/test/pipe>du -b
21857 ./fifo
49813 ./popen
136587 .
[e-mail]:~/test/pipe>du -bh
22K ./fifo
49K ./popen
134K .
[e-mail]:~/test/pipe>du -a
16 ./add2_filter
16 ./pipe_more
4 ./add2_filter.c
12 ./add2
4 ./fifo/fifo.c
16 ./fifo/fifo1
4 ./fifo/fifo1.c
28 ./fifo
4 ./add2.c
12 ./myuclc
4 ./pipe.c
12 ./pipe
4 ./myuclc.c
4 ./popen/popen_more.c
12 ./popen/popen_more
4 ./popen/popen_w.c
4 ./popen/popen_pipe.c
4 ./popen/popen_r.c
12 ./popen/popen_w
4 ./popen/popen.c
12 ./popen/popen_pipe
12 ./popen/popen_r
72 ./popen
4 ./pipe_more.c
192 .
[e-mail]:~/test/pipe>du -ah
16K ./add2_filter
16K ./pipe_more
4.0K ./add2_filter.c
12K ./add2
4.0K ./fifo/fifo.c
16K ./fifo/fifo1
4.0K ./fifo/fifo1.c
28K ./fifo
4.0K ./add2.c
12K ./myuclc
4.0K ./pipe.c
12K ./pipe
4.0K ./myuclc.c
4.0K ./popen/popen_more.c
12K ./popen/popen_more
4.0K ./popen/popen_w.c
4.0K ./popen/popen_pipe.c
4.0K ./popen/popen_r.c
12K ./popen/popen_w
4.0K ./popen/popen.c
12K ./popen/popen_pipe
12K ./popen/popen_r
72K ./popen
4.0K ./pipe_more.c
192K .
[e-mail]:~/test/pipe>du -ab
13199 ./add2_filter
12577 ./pipe_more
2041 ./add2_filter.c
8947 ./add2
2084 ./fifo/fifo.c
13603 ./fifo/fifo1
2074 ./fifo/fifo1.c
21857 ./fifo
635 ./add2.c
10472 ./myuclc
702 ./pipe.c
9748 ./pipe
519 ./myuclc.c
1085 ./popen/popen_more.c
11976 ./popen/popen_more
322 ./popen/popen_w.c
740 ./popen/popen_pipe.c
281 ./popen/popen_r.c
9542 ./popen/popen_w
1812 ./popen/popen.c
10558 ./popen/popen_pipe
9401 ./popen/popen_r
49813 ./popen
1981 ./pipe_more.c
136587 .
[e-mail]:~/test/pipe>du -abh
13K ./add2_filter
13K ./pipe_more
2.0K ./add2_filter.c
8.8K ./add2
2.1K ./fifo/fifo.c
14K ./fifo/fifo1
2.1K ./fifo/fifo1.c
22K ./fifo
635 ./add2.c
11K ./myuclc
702 ./pipe.c
9.6K ./pipe
519 ./myuclc.c
1.1K ./popen/popen_more.c
12K ./popen/popen_more
322 ./popen/popen_w.c
740 ./popen/popen_pipe.c
281 ./popen/popen_r.c
9.4K ./popen/popen_w
1.8K ./popen/popen.c
11K ./popen/popen_pipe
9.2K ./popen/popen_r
49K ./popen
2.0K ./pipe_more.c
134K .
[e-mail]:~/test/pipe>ls -al
总用量 104
drwxrwxr-x  4 gwwu gwwu  4096 4月  15 15:30 .
drwxr-xr-x 35 gwwu gwwu  4096 4月   9 16:32 ..
-rwxrwxr-x  1 gwwu gwwu  8947 4月  14 09:32 add2
-rw-rw-r-- 1 gwwu gwwu   635 4月  14 09:32 add2.c
-rwxrwxr-x  1 gwwu gwwu 13199 4月  14 10:10 add2_filter
-rw-rw-r-- 1 gwwu gwwu  2041 4月  14 10:10 add2_filter.c
drwxrwxr-x  2 gwwu gwwu  4096 4月  15 15:30 fifo
-rwxrwxr-x  1 gwwu gwwu 10472 4月  14 16:43 myuclc
-rw-r--r-- 1 gwwu gwwu   519 4月  14 16:45 myuclc.c
-rwxrwxr-x  1 gwwu gwwu  9748 4月   8 17:42 pipe
-rw-r--r-- 1 gwwu gwwu   702 4月   8 17:42 pipe.c
-rwxrwxr-x  1 gwwu gwwu 12577 4月  13 15:20 pipe_more
-rw-rw-r-- 1 gwwu gwwu  1981 4月  13 15:20 pipe_more.c
drwxrwxr-x  2 gwwu gwwu  4096 4月  15 15:29 popen
[e-mail]:~/test/pipe>ls -alh
总用量 104K
drwxrwxr-x  4 gwwu gwwu 4.0K 4月  15 15:30 .
drwxr-xr-x 35 gwwu gwwu 4.0K 4月   9 16:32 ..
-rwxrwxr-x  1 gwwu gwwu 8.8K 4月  14 09:32 add2
-rw-rw-r-- 1 gwwu gwwu  635 4月  14 09:32 add2.c
-rwxrwxr-x  1 gwwu gwwu  13K 4月  14 10:10 add2_filter
-rw-rw-r-- 1 gwwu gwwu 2.0K 4月  14 10:10 add2_filter.c
drwxrwxr-x  2 gwwu gwwu 4.0K 4月  15 15:30 fifo
-rwxrwxr-x  1 gwwu gwwu  11K 4月  14 16:43 myuclc
-rw-r--r-- 1 gwwu gwwu  519 4月  14 16:45 myuclc.c
-rwxrwxr-x  1 gwwu gwwu 9.6K 4月   8 17:42 pipe
-rw-r--r-- 1 gwwu gwwu  702 4月   8 17:42 pipe.c
-rwxrwxr-x  1 gwwu gwwu  13K 4月  13 15:20 pipe_more
-rw-rw-r-- 1 gwwu gwwu 2.0K 4月  13 15:20 pipe_more.c
drwxrwxr-x  2 gwwu gwwu 4.0K 4月  15 15:29 popen
[e-mail]:~/test/pipe>

[e-mail]:~/test/pipe>du
28 ./fifo
72 ./popen
192 .
[e-mail]:~/test/pipe>du -s
192 .
[e-mail]:~/test/pipe>