Useful UNIX utilities

Terminal

ksh build in
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
hotplugd
du & df - Disc usage utilities
env
mail
entr - file changed detection
smenu - tool for making interactive shell menus
TheSilverSearcher
source command - execute in current context
goaccess - log analysis
terminal sampler and charting - toolkit written in go that is able to do charting directly in terminal
neofetch
sct - simple alternative to redshift on OpenBSD
pax - tool to help copy archive files

Performance

iperf - Performance benchmark
renice - Change process scheduling priority
top - also see ports ntop, iftop and pftop.
GoAccess - Apache/NGINX log file analyzer using ncurses.
systat - gen system performance
fping - network performance

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.
simple-mtpfs

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
TextEditors
find
sort
grap - Graph type setting tool which can be used in TeX and groff. grap port exists. See Teach you children groff for inspiration.
howl - Capable text editor written in Lua
lite - Another simple and capable text editor in Lua
diff - UNIX diff tool

Programming

fossil

Server monitoring

ServerMonitoring
Puppet - Data center automation written in Ruby

Version Control

Git Explanation
Mercurial - hg version control

Multimedia

[Graphwiz dot](/Graphwiz dot)
OpenBSDAudio
Lives - Video Editing. Coming port for OpenBSD. See article in Linux Journal.

Network

node.js
SpamBayes
unbound
ssh
coherence
opera
http://www.opensips.org
rtorrent
netcat - nc is the swiss army knife of TCP/UDP networking
mdns - Multicast DNS to replace Avahi or Bonjour written for OpenBSD. See openmdns port.
arp-scan
Failover with trunk(4)
PF-badhost

Base System

ktrace - kernel trace
ldd - binary program library dependence
qemu
disklabel - can be used to find used USB partitions
sysmerge
opensmtpd

Security

ZAP penetration testing

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.

Another way is to install pkg_mgr which is a curses based packages manager which use normal pkg_* tools.

Installing ports behind a proxy/firewall

If you are behind a proxy/firewall it is often neccesary to proxy ftp traffic through http and proxy server. Set the ftp_proxy environment variable according to your company proxy settings. Then you can set the PKG_PATH as usual. ftp will automatically pass ftp traffic using http through proxy server.

export ftp_proxy= http://<proxy_user>:<proxy_pw>@proxy.your.domain.com:<port>/
export PKG_PATH=ftp://ftp.openbsd.host.com/5.0/packages/i386

Package info

Install message (if any) can be displayed using -M flag.

pkg_info -M mysql-server

There might also be an install readme as part of the package.

ls /usr/local/share/doc/pkg-readmes/
mysql-server-5.1.60