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Polkit is a toolkit for defining and handling authorizations. It is used for allowing unprivileged processes to speak to privileged processes.

This is pstree. It is a small program that shows the ps listing as a tree (as the name implies...). It has several options to make selection criteria and to change the output style. For that it uses the output of /bin/ps.

s6 is a small suite of programs for UNIX, designed to allow process supervision (a.k.a service supervision), in the line of daemontools and runit.

filelike is a Python module for building and manipulating file-like objects. This module takes care of the groundwork for implementing and manipulating objects that provide a rich file-like interface, including reading, writing, seeking and iteration. It also provides a number of useful classes built on top of this functionality.

Spot The Difference is a file integrity checker. Its goal is to detect signs of intrusion by looking for suspicious changes in system files. Crackers, in fact, to do their evil or just to make sure they can work their way back into the system, often change some configuration files, executables and/or log files (usually with rootkits); thus leaving signs of the break-in.

rdiff-backup backs up one directory to another, possibly over a network. The target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files lost some time ago. The idea is to combine the best features of a mirror and an incremental backup. rdiff-backup also preserves subdirectories, hard links, dev files, permissions, uid/gid ownership (if it is running as root), and modification times. Finally, rdiff-backup can operate in a bandwidth efficient manner over a pipe, like rsync. Thus you can use rdiff-backup and ssh to securely back a hard drive up to a remote location, and only the differences will be transmitted. This port tracks the development branch 1.3.

rdiff-backup backs up one directory to another, possibly over a network. The target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files lost some time ago. The idea is to combine the best features of a mirror and an incremental backup. rdiff-backup also preserves subdirectories, hard links, dev files, permissions, uid/gid ownership (if it is running as root), and modification times. Finally, rdiff-backup can operate in a bandwidth efficient manner over a pipe, like rsync. Thus you can use rdiff-backup and ssh to securely back a hard drive up to a remote location, and only the differences will be transmitted.

realsync daemon with rsync and python: - config support /usr/local/etc/realsync.cfg - e-mail stats support - threads support - threads wait support

SCSI / firewire harddrive spindown daemon This is a small program for handling automated spinning down of SCSI harddrives. With SCSI devices it is not as common to spindown for power management purposes as for ATA however it might be required to spin down a disk contained in a firewire enclosure for instance.

Screen is a full-screen window manager that multiplexes a physical terminal between several processes (typically interactive shells). Each virtual terminal provides the functions of a DEC VT100 terminal and, in addition, several control functions from the ANSI X3.64 (ISO 6429) and ISO 2022 standards (e.g. insert/delete line and support for multiple character sets). There is a scrollback history buffer for each virtual terminal and a copy-and-paste mechanism that allows moving text regions between windows.