Coproc Tutorial (2011) (opens in new tab)

(zsh.org)

26 points0x45696e61722y ago7 comments

7 comments

o11c2y ago

I've never found a case where coproc actually solves a problem I'm facing.

Note that bash's version is slightly different but pretty close. Also, bash supports `lastpipe` nowadays so you don't have to use this as a workaround for that issue, and `< <()` is more often the useful thing for custom pipeline composability, and without suffering from the "only one coprocess may exist" limitation.

cryptonector2y ago

You can get the pid of the process in the process redirection case (`while read ...; do ...; done < <(some_program)`) but not in the | case (`some_program | while read ...; do ...; done`).

nerdponx2y ago

I used it once for configuring Herbstluftwm and Dzen, but it was very fussy and I ended up refactoring my script later into separate processes.

0x45696e6172OP2y ago

I use it to launch GUI apps from the terminal, e.g.

    coproc 'nemo .'

wiml2y ago

Is that better than using ordinary job control (nemo . &) ?

2 more replies

j / k navigate · click thread line to collapse