To get the size of a Directory in Linux, use du command. du command is used to find the file space usage & summarize disk usage of each file/directory.
To find the size of /usr directory:
du /usr OR
Pass -s option to see the total disk space summary & -h option for human readable format.
du -sh /usr
We can also list the contents of the directory (whether file or directory) with size:-
du -sh /usr/*
Sample output:
\[root@myserver ~\]# du -sh /usr/*
71M /usr/bin
8.0K /usr/etc
8.0K /usr/games
87M /usr/include
122M /usr/java
1.8M /usr/kerberos
535M /usr/lib
199M /usr/lib64
12M /usr/libexec
212M /usr/local
17M /usr/sbin
563M /usr/share
57M /usr/src
4.0K /usr/tmp
48M /usr/X11R6
