&dhucpackage; &dhsection;

&dhpackage;

merge a COW file with its backing file

          &dhpackage;

          COW file

          new_backing_file

## DESCRIPTION

This manual page documents briefly the `&dhpackage;` command.

This manual page was written for the &debian; distribution because the original program does not have a manual page. Instead, it has documentation in HTML format; see below.

`&dhpackage;` is a program to merge a COW (copy-on-write) file with its backing file, and write the result to a new backing file. This can be used periodically to update the backing file with the changes made in the COW file.

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.

## SEE ALSO

The UserModeLinux-HOWTO

## AUTHOR

&dhpackage; was written by RidgeRun,Inc glonnon@ridgerun.com

This manual page was written by &dhusername; &dhemail; for the &debian; system, based on material in the UserModeLinux-HOWTO by Rusty Russell.