Assorted snippets of code that were useful in the past and can be even more in the future.
Concatenate two or more PDF files into one:
pdfunite one.pdf two.pdf out.pdf
Convert two or more PNG files into one PDF:
convert one.png two.png out.pdf
Mount secure folder to remote folder:
sudo apt install sshfs mkdir -p $HOME/folder sshfs -o idmap=user user@remote-host:/home/user/folder $HOME/folder