Commands using dig (42)

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Set an alarm to wake up [2]
Set an alarm to starts in specific time.

Clear history

Generate hash( of some types) from string
No need to install yet another program when openssl is already installed. :-)

Merge files, joining each line in one line
Merge files, joining line by line horizontally. Very useful when you have a lot of files where each line represents an info about an event and you want to join them into a single file where each line has all the info about the same event See the example for a better understanding

cat stdout of multiple commands
Concatenate the stdout of multiple commands.

Mysql uptime
show Mysql uptime

display ip address
add this alias in .bashrc to fast check the ip address of your modem router alias myip="curl -s http://myip.dk | grep '' | sed -e 's/]*>//g'"

adjust laptop display hardware brightness [non root]

See a full list of compiler defined symbols
From http://lists.debian.org/debian-devel/2001/01/msg00971.html .

Get simple weather info from a zip code
$ weather 97405


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