I am starting to look into intercepting a running processes output. I know
how to do this manually by look at /proc/$PID/fd/1 or by using gdb etc. I
do not want to use os.exec and then join the child processes output with
the parent. I want to start Process A and capture the output of A in
Process B. Does anyone have any advice on where to start or an opinion on
why I should just use os.exec ? Any advice/help would be great !
example :
Process A
pid : 1234
output : Hello world
output : Hello world
output : Hello world
output : Hello world
Process B
pid : 5678
reads from process A
output : From B - Hello world
output : From B - Hello world
output : From B - Hello world
output : From B - Hello world
I don't want to have to exec the process from my go application like this :
func main() {
// Replace `ls` (and its arguments) with something more interesting
cmd := exec.Command("ls", "-l")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Run()
}
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