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getlineinto a Variable from a Coprocess
When you use `command |& getline var', the output from
the coprocess command is sent through a two-way pipe to
and into the variable var.
In this version of
getline, none of the built-in variables are
changed and the record is not split into fields. The only variable
changed is var.
Coprocesses are an advanced feature. They are discussed here only because
this is the section on
See section Two-Way Communications with Another Process,
where coprocesses are discussed in more detail.
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