Commands by kzh (9)

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add all files not under version control to repository
With the force options the same results can be achieved

Counts number of lines (in source code excluding comments)
I took java to make the find command simpler and to state that it works for any language supported by cpp. cpp is the C/C++ preprocessor (interprets macros, removes comments, inserts includes, resolves trigraphs). The -fpreprocessor option tells cpp to assume the input has already been preprocessed so it will only replace comment lines with blank lines. The -L 1 option tells xargs to launch one process for each line, indeed cpp can only process one file at the time...

analyze traffic remotely over ssh w/ wireshark
When using tcpdump, specify -U option to prevent buffering.

Play all files in the directory using MPlayer
Skip forward and back using the < and > keys. Display the file title with I.

Get decimal ascii code from character
printf treats first char after single ' as numeric equivalent

guitar synthesizer in one line of C
outputs a f=220Hz guitar string sound (fifth string A) needs ALSA

setup a tunnel from destination machine port 80 to localhost 2001, via a second (hub) machine.
this is handy when the hubmachine is the only machine that can connect to the destination machine (allowed on ip by firewall) and you want to access it from your laptop.

repeat a command every one second
Short method of "while x=0; do foo ; sleep 1 ; done"

switch case of a text file

Combine multiple images into a video using ffmpeg
The -start_number can be ignored if sequence starts with 0, otherwise use first number in sequence


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