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Execute MySQL query send results from stdout to CSV
You can, of course, tell MySQL to output results to a file and dictate how to terminate lines, etc. But sometimes you don't have access to the file system MySQL is running on, complicating outputting your results to a CSV, necessitating either annoying hacks or this simple command :D

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"

Show the command line for a PID, converting nulls to spaces and a newline

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

Add .gitignore files to all empty directories recursively from your current directory

RDP through SSH tunnel
This command will: 1. open an SSH tunnel to 2. go to background 3. wait for 10 seconds for the connection 4. during the 10 seconds wait it will localy run 'rdesktop' to connect to the remote host through the created SSH tunnel. Password-less log in can be achieved (when server allows it) by adding '-p ' to the 'rdesktop' command

Which fonts are installed?
See all fonts installed in your system

Create a DOS floppy image
mount with: mount -t msdos -o loop ./floppy.img /tmp/mnt

find packages installed from e.g. sid which are newer than those available from e.g. testing when sid is no longer present as a source repo
This is useful if you add sid, install some packages, then remove sid and want to work out which packages you installed from sid that should be removed (e.g. before an upgrade to the new stable). Alternatively you can think of this as "find installed packages that can no longer be installed."

Find the package that installed a command


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