天天一個Linux命令-使用du查看文件大小

du命令用以查看文件和目錄的大小。能夠方便地查看每一個文件和目錄所佔用的空間。

基本語法

du [options][file]
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可以使用的options值能夠經過 man df 命令查閱，這裏再也不贅述。

實例

顯示目錄或者文件所佔空間：

du /opt/log/*
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咱們能夠看到log目錄下全部的文件大小：

20	/opt/log/project/houtai/pc/suyun/log4js/2018-09-28
12	/opt/log/project/houtai/pc/suyun/log4js/2018-06-28
12	/opt/log/project/houtai/pc/suyun/log4js/2018-08-26
16	/opt/log/project/houtai/pc/suyun/log4js/2018-10-27
12	/opt/log/project/houtai/pc/suyun/log4js/2018-07-01
16	/opt/log/project/houtai/pc/suyun/log4js/2018-08-23
20	/opt/log/project/houtai/pc/suyun/log4js/2018-10-22
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經過使用-h讓輸出的文件大小可讀性更好一些：

du -h /opt/log/*
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能夠看到文件大小添加了單位K：

20	/opt/log/project/houtai/pc/suyun/log4js/2018-09-28
12	/opt/log/project/houtai/pc/suyun/log4js/2018-06-28
12	/opt/log/project/houtai/pc/suyun/log4js/2018-08-26
16	/opt/log/project/houtai/pc/suyun/log4js/2018-10-27
12	/opt/log/project/houtai/pc/suyun/log4js/2018-07-01
16	/opt/log/project/houtai/pc/suyun/log4js/2018-08-23
20	/opt/log/project/houtai/pc/suyun/log4js/2018-10-22
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只展現總計大小：

du -sh /opt/log/*
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只統計了log目錄下子目錄的大小，而沒有細化到具體的文件。

0	/opt/log/:
12G	/opt/log/banjia
4.0K	/opt/log/driver-manage
2.1G	/opt/log/fe-sy-banjia
8.7G	/opt/log/fe-sy-lahuo
539M	/opt/log/lahuo
32K	/opt/log/lahuo-work
16G	/opt/log/nginx
157G	/opt/log/project
248K	/opt/log/sale-manage
100K	/opt/log/youpei

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