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Linux du 命令查看磁盘空间使用情况

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Linux du 命令查看磁盘空间使用情况

By 刘志军, 2021-06-01, 分类： Linux

du

du的全称为disk usage，意为磁盘空间使用情况，du素有磁盘管理三剑客之一的称号，它的功能是统计目录和文件所占磁盘空间大小

下面分享几个关于du命令常用的例子

1、统计 log 目录下所有子目录的大小

du log -h

4.0K    log/ppp
1.8G    log/journal/7d26c16f128042a684ea474c9e2c240f
1.8G    log/journal
4.0K    log/anaconda
4.0K    log/ntpstats
30M     log/audit
1.5M    log/redis
235M    log/nginx
41M     log/letsencrypt
8.0K    log/mysql
4.0K    log/tuned
4.0K    log/sa
2.2G    log

2、统计log目录下所有子目录以及文件的大小

du log -ah

1000K   log/secure
8.0K    log/gshell.log
2.0M    log/secure-20210530
16K     log/maillog-20210509
12K     log/lastlog
0       log/spooler
1.4M    log/secure-20210516
4.0K    log/tuned
8.0K    log/boot.log-20200205
64K     log/yum.log-20190101
4.0K    log/sa
72K     log/messages-20210516
4.0K    log/yum.log-20210101
8.0K    log/maillog
2.2G    log
[root@iz2zeioq

3、汇总统计log目录的大小，不统计子目录大小

du log -sh
2.2G    log

4、统计第一层子目录大小

sudo du -h --max-depth=1 /var/lib

17G     /var/lib/mysql
4.0K    /var/lib/cs
8.0K    /var/lib/dhclient
4.0K    /var/lib/NetworkManager
4.0K    /var/lib/postfix
8.0K    /var/lib/ntp
4.0K    /var/lib/mysql-keyring
4.0K    /var/lib/tuned
4.0K    /var/lib/avahi-autoipd
432K    /var/lib/cloud
17G     /var/lib

5、统计/var目录下占用空间最大的5个目录或文件

sudo du -h /var/ | sort -rh | head -5

19G     /var/
17G     /var/lib/mysql
17G     /var/lib
15G     /var/lib/mysql/wxhub
2.2G    /var/log

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