Commands using egrep (220)

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Resume scp of a big file

whois surfing my web ?

Show the number of current httpd processes

use the previous commands params in the current command
Here the !!:1 will take the first parameter from the previous command. This can be used in conjunction with other history commands like ! and so on.

Fill the screen with randomly colored lines
This one-liner fills the screen with randomly colored lines.

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

df without line wrap on long FS name
-P uses the POSIX output format, which makes information on each file system always printed on exactly one line. "column -t" makes a table from the input.

check open ports without netstat or lsof

Remove duplicate rows of an un-sorted file based on a single column
$F[0] filters using first word. $F[1] - 2nd, and so on.

Spell check the text in clipboard (paste the corrected clipboard if you like)
xclip -o > /tmp/spell.tmp # Copy clipboard contents to a temp file aspell check /tmp/spell.tmp # Run aspell on that file cat /tmp/spell.tmp | xclip # Copy the results back to the clipboard, so that you can paste the corrected text I'm not sure xclip is installed in most distributions. If not, you can install x11-apps package


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