Zlibc is a read-only compressed file-system emulation. It allows executables to uncompress their data files on the fly. No kernel patch, no re-compilation of the executables and the libraries is needed. Using gzip -9, a compression ratio of 1:3 can easily be achieved! (See examples below). This program has (almost) the same effect as a (read-only) compressed file system.

How it works:

This package overrides the "open" function (and other similar system call functions) of the C library. this package uses the LD_PRELOAD variable to redirect the dynamic linker to use the relevant functions of uncompress.o instead of the shared library. The behavior of the tools may be tuned using the /etc/zlibc.conf configurator file.