Commands using ssh (347)

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list block devices
Shows all block devices in a tree with descruptions of what they are.

Text graphing ping output filter
Nasty perl one-liner that provides a sparkline of ping times. If you want a different history than the last 30, just put that value in. It (ab)uses unicode to draw the bars, inspired by https://github.com/joemiller/spark-ping . It's not the most bug-free piece of code, but what it lacks in robustness it makes up for in capability. :) If anyone has any ideas on how to make it more compact or better, I'd love to hear them. I included a ping to google in the command just as an example (and burned up 10 chars doing it!). You should use it with: $ ping example.com | $SPARKLINE_PING_COMMAND

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Fill the screen with randomly colored lines
This one-liner fills the screen with randomly colored lines.

Run entire shell script as root
Placing sudo in the shebang line of a shell script runs the entire thing as root. Useful for scripts designed to, e.g. automate system upgrades or package manager wrappers — makes prepending everything with sudo no longer necessary

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

Get a list of Mageia Linux mirrors providing rsync connectivity for Mageia 4 release
Need to find a Mageia Linux mirror server providing Mageia 4 via rsync? Modify the "url=" string for the version you want. This shows i586 which is the 32bit version. If you want the 64bit version it is: url=http://mirrors.mageia.org/api/mageia.4.x86_64.list; wget -q ${url} -O - | grep rsync:

list files recursively by size

Preserve colors when piping tree to less

Ping sweep without NMAP
Ping sweep without NMAP


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