Useful UNIX utilities

Terminal

• screen
• bash
• tmux - tmux is replacing screen
• MacOS trash - use trash bin from command line
• ksh
• nano - useful shell based texteditor if you don’t prefer vi.
• lsof - check open file and network connections

Performance

• iperf - Performance benchmark
• renice - Change process scheduling priority
• top - also see ports ntop, iftop and pftop.

File Synchronization

• rsync - One way file system synchronization
• unison - Two way file system synchronization
• CVSup - File sychronization specifically targetting CVS repositories.
• gitbak - backup system based on git
• Flyback - also available as port. Gui on top of rsync.

Text processing

• PortableScripts
• awk - Text processing utility
• sed - Stream editor
• tar - Archiving utility
• grep - Text filtering utility
• cut - cut line output
• bc - shell math
• tr - Translate characters
• ruby - Parse with Ruby
• head/tail - print beginning and end of stream

Server monitoring

• ServerMonitoring
• Puppet - Data center automation written in Ruby

Version Control

• Git Explanation

Multimedia

• Graphwiz dot
• OpenBSDAudio

Network

• SpamBayes
• Unbound DNS
• ssh
• coherence
• opera
• http://www.opensips.org

Base System

• ldd - binary program library dependence
• qemu
• disklabel - can be used to find used USB partitions

Finding ports

To do keyword search for ports do the following. Note that ports source must be installed first.

cd /usr/ports
make search key=rsnapshot

A great source for packages/ports are found on openports.se.