July 2018
Beginner
264 pages
8h 9m
English
Content preview from Bash Cookbook
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Creating a file-in-file-out program and running processes in parallel
In this recipe, we use a concept called file-in-file-out (FIFO), also known as pipes, to pass along a parameter to several "worker" scripts. These workers operate in parallel (in other words, mostly independent of the master process), read an input, and execute a command. FIFOS are useful because they can reduce file system activities or input/output (IO), and data can flow directly to listeners or recipients. They are represented on the file system as files and are bidirectional—they can be read and written to at the same time.
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