highest is a program that efficiently finds the n highest (or lowest) numbers in a list of numbers on stdin. The traditional way of computing this using GNU sort should have a running time of O(n log n), where n is the number of numbers to check. Highest should have a running time of O(n log m), where m is the number of numbers you want to keep. A graph comparing the performance of highest to that of GNU sort is provided.
Belier allows opening a shell or executing a command on a remote computer through an SSH session. The main feature of Belier is its ability to cross several intermediate computers before realizing the job. You can execute commands with any account available on the remote computer. It is possible to switch an account on intermediate computers before accessing the final computer, and Belier will generate one script for each final computer to reach.
rocknroll (Rsync fOr baCKup and Roll) is an incremental backup maker based on rsync. It backs up a remote directory tree to a destination directory on the local host. For this backup, it manages a set of archives named tag.1, tag.2, etc. Using the famous "link-dest" option of rsync, it keeps only the difference between the different archives.
netcf is a library and command line tool for configuring networking on Linux machines in a platform-independent way, using the platforms native configuration mechanisms. Supported are all the various ways in which physical interfaces, bridges, bonds, and VLANs can be combined. The configuration of a network connection is described in an XML format that emphasizes the logical relationship between the interfaces involved, e.g. a bridge connection describes the bridge interface itself and all the interfaces initially enslaved to it. Interoperability with existing network configuration tools is guaranteed since netcf relies only on native network configuration files, both for reading and writing them. Modifying network configuration with netcf has exactly the same effect as modifying the native configuration files directly, and netcf and other tools can be used interchangeably.
Yasma (Yet Another Sendmail Logfile Analyzer) is a reporting tool for sendmail log files. It provides a nice overview of your mail traffic like: messages transferred, some average values, top lists of messages sent, received, rejected, etc., and top lists of supposed spammers, status messages, relay hosts, and mailers. It analyzes one or more log files from the command line and writes an HTML report. For security, it can hide the user part of mail addresses listed in the report. A GeoIP database can be used to show country information.
Petit was developed to quickly analyze syslog and Apache log files in large environments. It can also be used for word discovery within log data. It is a general purpose tool that can do hashing, word counts, and command line graphing of Apache and syslog files. It is designed to be a standard Unix tool that can be employed with pipes or by opening files. Petit works by sifting data with standard patterns and allows for custom filters and fingerprints. This leaves the analyst with data that is both varied and interesting.