du：查询文件或文件夹的磁盘使用空间
[root@localhost mail]# du -h --max-depth=1 / 8.0K /media 8.0K /mnt 58G /data 98M /etc 8.0K /opt 36M /sbin 47M /lib64 7.9M /tmp 13M /boot 235M /lib 168M /var 39G /home 9.6G /usr 0 /sys 0 /proc 8.1M /bin 8.0K /misc 530M /root 8.0K /srv 108K /dev 16K /lost+found 8.0K /selinux 108G /
这样查linux下文件夹占用磁盘空间过多就一目了然了。
ls-lh 查询linux 下文件夹/文件用户所属组及权限
[root@localhost mail]# cd / [root@localhost /]# ls -lh total 252K drwxr-xr-x 2 root root 4.0K Apr 20 04:02 bin drwxr-xr-x 3 root root 4.0K Apr 11 11:50 boot drwxr-xr-x 6 root root 4.0K Apr 16 20:35 data drwxr-xr-x 11 root root 3.5K Jun 25 14:49 dev drwxr-xr-x 85 root root 12K Jun 25 14:48 etc drwxr-xr-x 10 root root 4.0K Jun 25 00:17 home drwxr-xr-x 11 root root 4.0K Apr 11 12:49 lib drwxr-xr-x 8 root root 12K May 10 17:49 lib64 drwx------ 2 root root 16K Apr 11 11:21 lost+found drwxr-xr-x 2 root root 4.0K Jan 27 2010 media drwxr-xr-x 2 root root 4.0K Mar 31 2010 misc drwxr-xr-x 2 root root 4.0K Jan 27 2010 mnt drwxr-xr-x 2 root root 4.0K Jan 27 2010 opt dr-xr-xr-x 145 root root 0 Jun 25 14:47 proc drwxr-x--- 6 root root 4.0K May 30 22:12 root drwxr-xr-x 2 root root 12K Apr 20 04:02 sbin drwxr-xr-x 2 root root 4.0K Apr 11 11:23 selinux drwxr-xr-x 2 root root 4.0K Jan 27 2010 srv drwxr-xr-x 11 root root 0 Jun 25 14:47 sys drwxrwxrwt 5 root root 72K Jun 25 16:20 tmp drwxr-xr-x 18 root root 4.0K Apr 11 13:09 usr drwxr-xr-x 21 root root 4.0K Apr 11 16:30 var