Commands by unixmonkey26415 (1)

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Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Record microphone input and output to date stamped mp3 file
record audio notes or meetings requires arecord and lame run mp3gain on the resulting file to increase the volume / quality ctrl-c to stop recording

Query well known ports list
Uses the file located in /etc/services

display an embeded help message from bash script header
With this one liner you can easily output a standard help message using the following convention: Usage: is the start marker Stop at the last #

In Mac OS X, read the copy area (CMD + V) and convert text to audible speech

Count lines of source code excluding blank lines and comments
Much more accurate than other methods mentioned here straight out of the box.

Show apps that use internet connection at the moment.
show only the name of the apps that are using internet

Show Shared Library Mappings
shows which shared lib files are pointed to by the dynamic linker.

Lists all directories under the current dir excluding the .svn directory and its contents

convert ascii string to hex
Even adds a newline.


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