Commands by phunehehe (6)

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Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

concatenate compressed and uncompressed logs
with zcat force option it's even simpler.

I finally found out how to use notify-send with at or cron
You can write a script that does this : $remind []

Check the status of a network interface

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

grep for minus (-) sign
Use flag "--" to stop switch parsing

What is my ip?

Count all the files in the directory and child directories

Remove text from file1 which is in file2 and stores it in an other file
This command compares file2 with file1 and removes the lines that are in file1 from file2. Handy if you have a file where file1 was the origional and you want to remove the origional data from your file2.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.


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