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# On Linux, how to know free space on disk in command line?

The ﻿df command is designed to check disk space on Linux:

df -h /

• the ﻿df command stands for disk free.
• ﻿-h option is for human readable (print sizes in powers of 1024)
• ﻿﻿/ displays the usage of your primary hard drive. It can be omitted or replaced by another file system (/dev/sda2 for example).

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