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ZUM

NAME

zum − free disk space by making holes in files

SYNOPSIS

zum [FILE]...

DESCRIPTION

zum reads a files list on the command line and attempts to perforate these files. Perforation means, that series of ‘0’ bytes are replaced by lseek(2)s, thus giving the file system a chance of not allocating real disk space for those bytes.

EXAMPLE

find . -type f -print0 | xargs -0 zum

If you zum under /boot, where your kernel image lives, your system will become unbootable unless you run lilo again.

AUTHOR

Oleg Kibirev <oleg AT gd DOT cs DOT CSUFresno DOT edu>.

Manual page by Heiko Schlittermann <heiko AT lotte DOT sax DOT de>.

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