Commands using ps (300)

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open a screenshot of a remote desktop via ssh
standard image viewers do not seem to be able to open a FIFO file. xloadimage was the first one i've stumbled upon that can handle this.

Tail a log-file over the network
Netcat is used to serve a log-file over a network on port 1234. Point a browser to the specified server/port combo to view log-file updates in real-time.

find file/dir by excluding some unwanted dirs and filesystems
Consider using this cmd when: 1. You are planning to traverse a big directory. 2. There is a subdir you don't want find to decend to. (entirely ignore) 3. You don't want find to decend to any mounted filesystems under this dir. * The -xdev flag tells find do not go to other filesystems. * -path ./junk_dir -prune is the pattern to ignore ./junk_dir entirely. * The rest is the typical search and print. To ignore multiple subdirs, you can just iterate the pattern, e.g. find . -path ./junk1 -prune -o -path ./junk2 -prune ... If you do want to include other filesystems, then remove -xdev flag. If you want to search files, then change -type d to -type f.

Create a new file

find out how many days since given date
You can also do this for seconds, minutes, hours, etc... Can't use dates before the epoch, though.

Compress files in a directory

Getting a domain from url, ex: very nice to get url from squid access.log

Send an http HEAD request w/curl

Remove invalid key from the known_hosts file for the IP address of a host
Quick shortcut if you know the hostname and want to save yourself one step for looking up the IP address separately.

Equivalent to ifconfig -a in HPUX


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