The coproc keyword - Fixes to the examples, grammar, and spelling. (Someone should review these examples for correctness).

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http://wiki.bash-hackers.org – :V4: Synopsis coproc [NAME] command [redirections] Description Bash 4.0 introduced coprocesses, a feature certainly familiar to ksh users. The coproc keyword starts a command as a background job, setting up pipes connected to both its stdin and stdout so that you can interact with it bidirectionally. Optionally, the co-process can have a name NAME. If NAME is given, the command that follows must be a compound command. If no NAME is given, then the command can be either simple or compoun… (HowTos)