How To Check Linux Disk Space? – POFTUT

How To Check Linux Disk Space?

Disk usage and monitoring is important aspect of Linux system administration. One of the most occurring problems is fulling disk space. Getting information about disk usage can become a nightmare if you do not know how to properly do it. How many free GB are there? or How many percentages of the disk is full?

Check with df Command

To check disk space usage df command can be used. df command will give general information about disk usage. We will also provide the -l and -h options in order to list partitions in a human-readable format.

Check with df Command

Check with df Command

We will get the following information about the disk space and size.

  • Size is the complete size of the given partition or disk.
  • Used is the size which is already used or filled in a given disk or partition.
  • Available is the size which is spare in a given disk or partition.
  • Use is the percentage of the used part of the given disk or partition.

Check with du Command

An alternative to df command is du command. Actually, they provide different information from a different viewpoint. Du command provides information about files and directories.

Check with du Command

Check with du Command

The command may seem a bit complex. We get size summary information about directories in root path level and to clear standard error messages send them to the /dev/nul

Sort Directories According To Their Size

We can list root-level directories according to their size in KB. Listing them according to their size is not so complex.

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Sort Directories According To Their Size

Sort Directories According To Their Size

Check Disk Space Remotely

Checking disk space usage one by one connecting to the servers is a tedious task. It can be done remotely with ssh connection. By using ssh remote command execution feature disk command can be run without connecting to server.

Check Disk Space Remotely

Check Disk Space Remotely

As a standard command, we issue ssh ubu1 and then put our command to run remotely.

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