Commands by Nichlas (5)

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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 video files to YouTube ready output
Takes two input video files and an external audio track and encodes them together to an MPEG-4 DivX output video file with the correct size ready for uploading.

Netcat brute force on administration login panel

Copy your SSH public key on a remote machine for passwordless login - the easy way

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

display date of last time a process was started in `date` format
STARTED Mon Oct 18 04:02:01 2010

Append last argument to last command
Just like "!$", except it does it instantly. Then you can hit enter if you want.

Emergency Alien Invasion Warning
When aliens invade Earth, be first to warn your neighbours by placing your computer screen at a window and executing this potentially Earth-saving command. Ctrl C when aliens are defeated.

echo something backwards
NAME rev - reverse lines of a file or files SYNOPSIS rev [file ...] DESCRIPTION The rev utility copies the specified files to the standard output, reversing the order of characters in every line. If no files are specified, the standard input is read. AVAILABILITY The rev command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.

Mysql extended status
Useful when checking MySQL status.


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