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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" }

Prints new content of files
Useful to e.g. keep an eye on several logfiles.

List your sudo rights
List the commands you have the right to use with sudo.

Delete all but latest file in a directory
Useful for deleting old unused log files.

View the latest astronomy picture of the day from NASA.
Substitute feh for the image viewer of your choice. display (part of imagemagick) seems to be a popular choice.

Show database sql schema from Remote or Local database
After ssh into server, run this command to show all the table structure and schema.

Install pip with Proxy
Installs pip packages defining a proxy

Add all files in current directory to SVN
The --force option bypasses the warning if files are already in SVN.

Scan for nearby Bluetooth devices.
Scans local area for visible Bluetooth devices. Use 'hcitool inq' to discover the type of device it is. And use -i hciX option to specify the local Bluetooth device to use.

list files recursively by size


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