How to clean up /dev/vda1 system disk in centos

 df -h checks the disk space of a server and finds that the disk is 100% used

The idea is:

 

1、cd /usr
2. du -sh * to see which directory takes up the most space
3. Repeat the first two steps, delete or remove according to the actual situation
4. For logs, run cat /dev/null > file.log to clear
5. The package can be uninstalled by rpm -e or rm -rf dir

which is:

 

Specifically: You can clean up by the following methods:

Use the following command to find large files larger than 100M , and find that several log files and temporary files are relatively large. Use rm  –rf to delete them.

    find / -size +100M -exec ls -lh {} \;

 

    You can also use du -h --max-depth=1 /path to query the folder occupancy to display the sum of the space occupied by the directory

     For example: du -h --max-depth=1 /var

 

    When deleting files, be careful not to delete system files anymore :)