chraebsli to Programmer Humor • 7 months agoTouch a file in Linuximagemessage-square94arrow-up11.2Karrow-down131
arrow-up11.17Karrow-down1imageTouch a file in Linuxchraebsli to Programmer Humor • 7 months agomessage-square94
minus-square@[email protected]linkfedilink6•7 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•7 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@[email protected]linkfedilink4•edit-27 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