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determine if tcp port is open
@putnamhill, no need if statement in that case. && is a AND and || is a OR

Get the beats per minute from an audio track
Requires bpm-tools https://www.pogo.org.uk/~mark/bpm-tools/

drop first column of output by piping to this
An advantage is that this doesn't modify remained string at all. One can change {0,1} with {0,n} to drop several columns

exec chmod to subfiles
Using `-exec cmd {} +` causes find to build the command using all matching filenames before execution, rather than once per file.

Add a progress counter to loop (see sample output)
For this hack you need following function: $ finit() { count=$#; current=1; for i in "$@" ; do echo $current $count; echo $i; current=$((current + 1)); done; } and alias: $ alias fnext='read cur total && echo -n "[$cur/$total] " && read' Inspired by CMake progress counters.

creating you're logging function for your script
You could also pipe to logger.

Basic sed usage with xargs to refactor a node.js depdendency

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Most used command

Install pip with Proxy
Installs pip packages defining a proxy


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