Various commands
Install .deb files
sudo dpkg --install packagename.deb
Print from command line
lp filename
Restoring deleted files
trash-restore filename
Combine two pdfs to one
pdfunite file01.pdf file02.pdf output.pdf
Install .deb files
sudo dpkg --install packagename.deb
Print from command line
lp filename
Restoring deleted files
trash-restore filename
Combine two pdfs to one
pdfunite file01.pdf file02.pdf output.pdf