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4.9.6 Pipe links
Pipe links provide access to stdin and stdout of any program. Pipe links are bidirectional. Syntax:"|: " + string_for_system
The string_for system will be passed to system after conneting
the input and output to the corresponding stdout and stdin.
Example:
link l="|: date"; open(l); l; ==> // type : pipe ==> // mode : ==> // name : date ==> // open : yes ==> // read : not ready ==> // write: ready read(l); ==> Fr 24. Feb 09:07:43 2023 l; ==> // type : pipe ==> // mode : ==> // name : date ==> // open : yes ==> // read : not ready ==> // write: ready close(l); |