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Linux Command - df

The Linux df command shows the amount of space used and available on a filesystem.

Show file system usage for all ( most ) filesystems:

df -h 

Show the usage whichever filesystem the specified file is on:

df -h /var/log/myserver.log

Show the usage for the filesystem of the current directory:

df -h .

Show usage only for ext4 filesystems:

df -h -t ext4

Common options:

-h human readable units
-i inode info
-k units in k
-m units in m
-a all types
-l local file systems
-t only this type …
-T show types
-x exclude type