4 ms·

That's an awesome technique, thanks for it! It is Linux-specific though.

• Klasiaster 5y ago
  It's also useful for signaling between processes to have them continue doing something as long as this proc path exists (the fd can also just be backed with >/dev/null instead of a real file that needs to be removed)
  • dzove855 5y ago
    For creating some kind IPC, i would create a named fifo or even use coproc (see man bash)
  • labawi 5y ago
    Normally, the pid and fd could be reused, so you should either make it a known unique path and verify it's still the same, lock the pid via some means (not sure if and how it's possible), or use another technique.