This is the command uml_mkcow that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
uml_mkcow — create a new COW file
SYNOPSIS
uml_mkcow [-f] [COW_file] [backing_file]
DESCRIPTION
This manual page documents briefly the uml_mkcow command.
This manual page was written for the Debian GNU/Linux distribution because the original
program does not have a manual page. Instead, it has documentation in HTML format; see
below.
uml_mkcow is a small utility to create COW (Copy-On-Write) files without the need to run
the full UML kernel.
NOTE: you can save a lot of disk space using COW files. When checking the size of the COW
file in order to see the gobs of space that you're saving, make sure you use 'ls -ls' to
see the actual disk consumption rather than the length of the file. The COW file is
sparse, so the length will be very different from the disk usage.
OPTIONS
-f Force overwrite of an exsiting COW file.
EXAMPLES
Create a new COW file:
uml_mkcow rootfs_COW rootfs
Overwrite (destroying) an existing COW file:
uml_mkcow -f rootfs_COW rootfs
Use uml_mkcow online using onworks.net services