chraebsli to Programmer Humor@programming.dev • 8 months agoTouch a file in Linuxprogramming.devimagemessage-square92fedilinkarrow-up11.2Karrow-down131
arrow-up11.17Karrow-down1imageTouch a file in Linuxprogramming.devchraebsli to Programmer Humor@programming.dev • 8 months agomessage-square92fedilink
minus-square@4am@lemm.eelinkfedilink6•8 months ago.“:>>” is “append null” right? Do you get a file with a single ASCII NUL or is it truly empty?
minus-squareTrailblazing Braille Taserlinkfedilink14•8 months agoNot really. I believe : is the “true” builtin. So it’s like running a program that exits with zero and writes nothing to stdout. The >> streams the empty stdout into the named file.
minus-square@al177@lemmy.sdf.orglinkfedilink4•edit-28 months ago$ :|wc -c 0 $ touch /tmp/f; :>>/tmp/f; wc -c /tmp/f 0 /tmp/f
.“:>>” is “append null” right? Do you get a file with a single ASCII NUL or is it truly empty?
Not really. I believe : is the “true” builtin. So it’s like running a program that exits with zero and writes nothing to stdout. The >> streams the empty stdout into the named file.
$ :|wc -c 0 $ touch /tmp/f; :>>/tmp/f; wc -c /tmp/f 0 /tmp/f