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Kansas State University at Salina Introduction to Unix |
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The Pipe (|)¶
A pipe is a facility of the shell that makes it easy very to chain together multiple commands. A pipe is called upon with the vertical bar character (|). When used between two Unix commands, it means that output from the first command should become the input to the second command. For example, to count how many files underneath a directory have been modified in the last day, the find and wc commands may be used along with a pipe (Finding Files, Counting with wc). The find command will list the modified files and wc can count them:
find . -type f -mtime -1 | wc -l
