Programmer Humor

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Touch a file in Linux (programming.dev)

submitted 7 months ago by [email protected] to c/[email protected]

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[–] [email protected] 6 points 7 months ago (2 children)

.“:>>” is “append null” right? Do you get a file with a single ASCII NUL or is it truly empty?

[–] [email protected] 14 points 7 months ago

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.

[–] [email protected] 4 points 7 months ago* (last edited 7 months ago)

$ :|wc -c 0 $ touch /tmp/f; :>>/tmp/f; wc -c /tmp/f 0 /tmp/f