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Factorial With Case
Computes factorials.

create random numbers within range for conjob usage
if you need to install cron jobs in a given time range.

Get your external IP address ( 10 characters long )
Shortest url to a external IP-service, 10 characters.

Copy all files. All normal files, all hidden files and all files starting with - (minus).
./* is for copying files starting with - .[!.]* is for copying hidden files and avoiding copying files from the parent directory. ..?* is for copying files starting with .. (avoids the directory ..) /path/to/dir the path to the directory where the files should be copied Can also be used as a script. Input argument is /path/to/dir in tcsh, replace .[!.]* with .[^.]*

Run the last command as root
Same as `sudo !!`. If you do not have permission to be sudo or sudo does not installed on your system, you can use this.

I finally found out how to use notify-send with at or cron
The simplest way to do it. Works for me, at least. (Why are the variables being set?)

To create files with specific permission:

convert several jpg into one pdf file
require ImageMagick and GhostScript paquet

Get first Git commit hash
git log --format=%H | tail -1 doesn't work anymore

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"


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