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A Unix pipe connects file descriptors of two processes. A pipe is created with the POSIX pipe() function declared in <unistd.h>. Shells provide pipe creation between processes using "|".

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Good evening, I would like to filter a file's content with some piped commands and then write the result back to the same file. I know, I can't do that the way I wrote it. Hold on … This is the piec …
asked Feb 17 '16 by Stphane