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arclog archives the log files monthly. It strips off log entries that belongs to previous months, and then compresses and saves them to archived files named logfile.yyyymm.gz. Currently, arclog supports Apache access log, Syslog, NTP, Apache 1 SSL engine log and my own bracketed, modified ISO date/time log file formats, and gzip and bzip2 compression methods. Several software projects log (or can log) in a format compatible with the Apache access log, like CUPS, ProFTPD, Pure-FTPd... etc., and arclog can archive their Apache-like log files, too.

reslog resolves IPs in Apache(8) log files. The result can then be analyzed by another program, like Analog. You can think of it as a replacement of the Apache(8) HostNameLookups directive, in the sense that it resolves client IPs altogether once a day. Resolving takes long time. This is mainly caused by resolving: Network packets may be filtered by firewalls; DNS servers may not be correctly configured; may not be up working; may sit in slow network sections; may be old slow machines; may have traffic jam... etc. All these reasons are out of our control.

Pipe Viewer (pv) is a terminal-based tool for monitoring the progress of data through a pipeline. It can be inserted into any normal pipeline between two processes to give a visual indication of how quickly data is passing through, how long it has taken, how near to completion it is, and an estimate of how long it will be until completion.

GNU Parallel is a shell tool for executing jobs in parallel using one or more machines. A job is typically a single command or a small script that has to be run for each of the lines in the input. The typical input is a list of files, a list of hosts, a list of users, or a list of tables. If you use xargs today you will find GNU Parallel very easy to use. If you write loops in shell, you will find GNU Parallel may be able to replace most of the loops and make them run faster by running jobs in parallel. If you use ppss or pexec you will find GNU Parallel will often make the command easier to read. GNU Parallel also makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU Parallel as input for other programs.

The PCI Utilities package contains various utilities dealing with the PCI bus, and also a library for portable access to PCI configuration registers. It includes `lspci' for listing all PCI devices (very useful for debugging of both kernel and device drivers) and `setpci' for manual configuration of PCI devices.

With the PEAR Cache you can cache the result of certain function calls, as well as the output of a whole script run or share data between applications.

This package is a little cache system optimized for file containers. It is fast and safe (because it uses file locking and/or anti-corruption tests).

Provides easy access to read/write to files along with some common routines to deal with paths. Also provides interface for handling CSV files.

PEAR::File_Find, created as a replacement for its Perl counterpart, also named File_Find, is a directory searcher, which handles, globbing, recursive directory searching, as well as a slew of other cool features.

PEAR::File_Fstab is an easy-to-use package which can read & write UNIX fstab files. It presents a pleasant object-oriented interface to the fstab. Features: * Supports blockdev, label, and UUID specification of mount device. * Extendable to parse non-standard fstab formats by defining a new Entry class for that format. * Easily examine and set mount options for an entry. * Stable, functional interface. * Fully documented with PHPDoc.