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Number of files in a SVN Repository
Number of files in a SVN Repository This command will output the total number of files in a SVN Repository.

Multi-thread any command
For instance: $ find . -type f -name '*.wav' -print0 |xargs -0 -P 3 -n 1 flac -V8 will encode all .wav files into FLAC in parallel. Explanation of xargs flags: -P [max-procs]: Max number of invocations to run at once. Set to 0 to run all at once [potentially dangerous re: excessive RAM usage]. -n [max-args]: Max number of arguments from the list to send to each invocation. -0: Stdin is a null-terminated list. I use xargs to build parallel-processing frameworks into my scripts like the one here: http://pastebin.com/1GvcifYa

Automatically tunnel all ports of running docker instances in boot2docker
It requires https://jqplay.org/, that comes with brew: brew install jq

flush memcached via netcat

intercept stdout/stderr of another process
similar to the previous command, but with more friendly output (tested on linux)

Test your bash skills.

Command to Show a List of Special Characters for bash prompt (PS1)
I use this command (PS1) to show a list bash prompt's special characters. I tested it against A flavor of Red Hat Linux and Mac OS X

perl insert character on the first line on your file

shell bash iterate number range with for loop

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.


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