Linux Commands

Remove password protection from a PDF file:

qpdf --password=$PASSWORD --decrypt in.pdf out.pdf

Who’s using the soundcard:

fuser -v /dev/snd/* /dev/dsp*

Show progress on dd:

killall -SIGUSR1 dd

Resize logical volume to max free size:

lvresize -r -l +100%FREE /dev/my-vg/lvname

• Linux