"write-only-1|"

Here is a simple example of running a Muq subserver which writes a stream of text output to the current standard output. It assumes you have Perl installed on your system.

In muq/srv/ create a file write-only-1 with contents

#!/usr/local/bin/perl
select( (select(STDOUT), $| = 1)[0]);
for (;;) {
    printf "Loop %d\n", $loop++;
    sleep 10;
}

At the unix level, do chmod +x write-only-1 to make the script executable.

Now, at the Muq prompt do:

root:
makeSocket --> s    @$s.standardOutput --> s$s.standardOutput
root:
[ :socket s :commandline "write-only-1|" | ]rootPopenSocket
root:

You will see a sequence of lines

Loop 0
Loop 1
...

printing out, one every ten seconds. These are being copied directly from the socket into the output stream for the current job, so they will not interfere with anything else you might wish to do.

You may close down the subprocess by doing

root:
[ :socket s | ]closeSocket
root:

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