Commands by ilovespam (3)

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find xargs mv

Join a folder full of split files
If you use newsgroups then you'll have come across split files before. Joining together a whole batch of them can be a pain so this will do the whole folder in one.

Lookup your own IPv4 address

prevent accidents and test your command with echo
if you're using wildcards * or ? in your command, and if you're deleting, moving multiple files, it's always safe to see how those wildcards will expand. if you put "echo" in front of your command, the expanded form of your command will be printed. It's better safe than sorry.

Add thousand separator with sed, in a file or within pipe
Does not necessarily require a file to process, it can be used in a pipe as well: $ cat filename | sed -e :a -e 's/\(.*[0-9]\)\([0-9]\{3\}\)/\1,\2/;ta' I don't remember where I copy/pasted this from, I wish I credited the original author

Search manpages for a keyword
Search manpages for a keyword. Very useful when you don't know where to find the information.

Mac OS X - List all of my machine's IP addresses
On the Mac, the format ifconfig puts out is little different from Linux: the IP address is space separated, instead of colon. That makes parsing the IP address easier. See releated command for Linux/Unix: http://www.commandlinefu.com/commands/view/651/getting-the-ip-address-of-eth0

Figure out what shell you're running
short, sweet, and works after sudoing a new shell.

Scrape commands from commandline fu's 1st page
just bored here at work ... if your are daring ... add '| bash' .... enjoy require 'ruby'

check open ports without netstat or lsof


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