I'm not even sure what signal I should be sending with the kill

Windows has two signals, Ctrl-C and Ctrl-Break. It uses message passing primarily, but that's for application with Windows. It can terminate processes forcibly.

I think you can send the Ctrl-C and Ctrl-Break signals using kill, but I don't know which numbers do this.

kill 9 surely results in the the system call to terminate a process. That's drastic.

BUT it does not kill the gzip or mycommand processes when it gets to the "kill 9, $pid".

It kills the shell whose pid is in $pid. This doesn't kill the shell's children. I don't know one would achieve that.

One solution would be to eliminate the shell and do the piping yourself.

In reply to Re: open (to read) and kill a pipe to a pipe by ikegami
in thread open (to read) and kill a pipe to a pipe by Anonymous Monk

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