Commands using cd (215)

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Replace spaces in filename
This command will replace spaces in filename with underscore, for all file in directory that contain spaces.

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"

Find files and calculate size of result in shell
Use find's internal stat to get the file size then let the shell add up the numbers.

Replaces a color in a PDF document, useful for removing a dark background before printing.
The pdf is first converted to a bitmap, so change "-density" to match your printer resolution. Also be careful about the RAM required. In this example rgb(0,0,0) is replaced by rgb(255,255,255), change to suit your needs.

Best SSH options for X11 forwarding
grabbed from: http://blog.samat.org/2006/05/08/best-ssh-options-for-x11-forwarding

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"

Length of longest line of code
Here's an awk version.

draw honeycomb
Fill the entire terminal screen. Is COLUMNS or LINES are undefined run "resize"

Install pip with Proxy
Installs pip packages defining a proxy

find all active IP addresses in a network
Have to run as superuser... but easier and more informational if you are looking for actual devices. Need to install arp-scan.


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