fallocate

linux

Reserve or deallocate disk space to files. The utility allocates space without zeroing.

Options (3)

-l, --lengthboolean

Reserve a file taking up 700 MiB of disk space

Example: fallocate {{[-l|--length]}} 700M {{path/to/file}}

-c, --collapse-rangeboolean

Shrink an already allocated file by 200 MB

Example: fallocate {{[-c|--collapse-range]}} {{[-l|--length]}} 200MB {{path/to/file}}

-o, --offsetboolean

Shrink 20 MB of space after 100 MiB in a file

Example: fallocate {{[-c|--collapse-range]}} {{[-o|--offset]}} 100M {{[-l|--length]}} 20M {{path/to/file}}

Reserve a file taking up 700 MiB of disk space

fallocate [-l|--length] 700M path/to/file

Shrink an already allocated file by 200 MB

fallocate [-c|--collapse-range] [-l|--length] 200MB path/to/file

Shrink 20 MB of space after 100 MiB in a file

fallocate [-c|--collapse-range] [-o|--offset] 100M [-l|--length] 20M path/to/file