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Mac OS X: (not nearly) complete guide to the Mac OS X command line interface

The purpose of this document is to gather all Mac OS X specific terminal commands. I'm a frequent CLI user, even in Mac OS X and had to search a lot in order to find all these specific commands. Hence this document to keep them all in one place as a reference :p. Note that these are Mac OS X specific commands! So a widespread command as for instance 'ls' is not included! Commands were tested on Mac OS X 10.4 (Tiger)

appleping: 'ping' for Appletalk networks.
bless: View or change Mac OS X boot volume options.
certtool: Manage TLS/SSL certificates and keychain access (See 'man openssl').
defaults: Allows users to change Mac OS X user defaults from the cli.
ioreg: Shows I/O Kit registry.
lsbom: List the content of a 'bom' file. (See 'man bom' for more information on 'bom' or 'bill-of-materials' files)
mkbom: Make a 'bom' file. (See 'man bom' for more information regarding 'bom' files)
nvram: manipulate the Open Firmware NVRAM.
open: Open a file as if it were double-clicked.
opendiff: Open and compare 2 files (Cfr. Unix 'diff' command).
otool: Displays specified parts of object files or libraries. (Cfr. unix 'ldd').
plutil: Property list (.plist) utility.
pmset: Modify the power management settings.
redo_prebinding: Redo the prebinding of an executable or dynamic library. See http://www.kernelthread.com for more information regarding pre-binding.
say: Text to speech converter.
screencapture: Screen capture utility.
scselect: Change the network location. Is equivalent to changing the Network Location in the System Preferences pane.
service: Interface to stop and start Mac OS X services.
sips: Scriptable image processing system.
softwareupdate: This is the command line version of "Software Update". Useful for updating your Mac OS X installation via a remote ssh connection or via the terminal.
system_profiler: Reports system hardware and software configuration. This is the command line equivalent to 'About This Mac, More Info...' in the Apple menu.
update_prebinding: Update prebinding information when new system libraries or frameworks are installed. See http://www.kernelthread.com for more information regarding pre-binding.
nicl: NetInfo Command Line Utility. For more information regarding NetInfo, go here.
nidump: Dump NetInfo information in unix FF format.
niload: Load NetInfo information from unix FF format.
niutil: read and write domain in plain text.
nifind: find a NetInfo directory.
nigrep: performs a regular expression search on NetInfo.
nireport: prints tables from NetInfo.
dscl: directory services command line utility. Dscl is preferred over the ni* set of commands.
scutil: interface to configd to manage Network Locations etc.