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spipe(1) |
FreeBSD General Commands Manual |
spipe(1) |
spipe - supervise an pipeline of commands
spipe is designed for the purpose of allowing supervise to manage a
complete pipeline of commands. spipe executes supervise on all of the
named directories, inserting a pipe between each pair of supervised processes.
The supervise processes are started from last to first, to ensure that each
producer of output has a consumer to pipe its data to. If spipe is sent
either the INT, QUIT, or the TERM signal, it runs svc
-dx on each command to shut it down, and waits for it to exit. The
processes are shut down from first to last, to ensure that each producer stops
writing its output before shutting down the corresponding consumer.
Exits 0 when all the commands are shut down. If a fatal error is encountered, it
exits.
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