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Multiple variable assignments from command output in BASH
This version uses read instead of eval.

Print a row of characters across the terminal
shorter than alternative

display a smiling smiley if the command succeeded and a sad smiley if the command failed
you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

Convert flv without re-encoding

Find default gateway

Monitor a file with tail with timestamps added
Should be a bit more portable since echo -e/n and date's -Ins are not.

Remove a file whose name begins with a dash ( - ) character
Using the redundant ./ directory information prevents the dash from occurring at the beginning of the filename, and being interpreted as an option of the rm command. Also works using: $ rm -- -filename

backup your history
simple and easy backup your history with timestamp

Use tcpdump to monitor all DNS queries and responses


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