$ tr -dc 'a-zA-Z0-9~!@#$%^&*_()+}{?></";.,[]=-' < /dev/urandom | fold -w 32 | head -n 1

March 24, 2019, 6:39 p.m.cheuv25


The tr command filters characters from /dev/urandom: it deletes characters that don't match what is specified in its argument (a-zA-Z0-9~!@#$%^&*_()+}{?></";.,[]=-).

Then the fold command wraps the output every 32 characters and head takes only the first line, effectively stopping the pipeline after 32 characters were printed.