Using Linux Terminal command here is how to get total disk size in GB to check storage space in terminal.
Here are the commands to check disk space in Ubuntu.
df Command
The “df” command is for “disk filesystem” and is a great tool to know about the disk space usage on Linux Systems. The df command displays the amount of disk space available on the file system. If no file name is given, the space available on all currently mounted file systems is shown.
When executed in its simplest form (without any command potions), the df command displays the information about the file system disk space usage – device name, total blocks, total disk space, used disk space, free disk space and mount points.
df
As the disk space is shown in 1K blocks by default, users can use “-h” command parameter to show the file system disk space usage data in “human readable” format.
df -h
-h is human readable format. It appends a size letter to each size, such as ‘M’ for mebibytes. Powers of 1024 are used, not 1000; ‘M’ stands for 1,048,576 bytes. This option is equivalent to ‘–block-size=human-readable’.
du Command
‘du’ reports the amount of disk space used by the set of specified files and for each subdirectory (of directory arguments). With no arguments, ‘du’ reports the disk space for the current directory. Normally the disk space is printed in units of 1024 bytes, but this can be overridden.
There are many options for the du command. Here are some of the common ones:
- -a – write counts for all files and not just directories
- –apparent-size – prints apparent sizes rather than disk usage
- -h – human-readable format
- -b – bytes
- -c -grand total
- -k – block size
- -m – size in megabytes
- Display all files: Use the command du -a to see all files and the directories.
- Display specific folder: Use the command du -a with the path to the directory. For example, to see the contents of my Downloads directory, I would run the command du -a /home/don/Downloads to see the contents of Downloads directory.
- Display size in human readable format: To display the disk usage or disk space in human readable format; in Gb, run the command with -h parameter (see above).
You can also use the lsblk command. The lsblk command lists block devices in a tree-like visual layout. It’s quite helpful if a user wants to see the actual hardware disks and their physical partitions, not just the mounted filesystems.
It gives an overall view of the real disk structure, including disks without active mounts, and their partitioning.