# Get ppid of $child via /proc fs
```sh
cat /proc/$child/stat

cat /proc/14344/stat
14 (kblockd/0) S 1234 1 1 0 -1 41024 0 0 0 0 0 2336 0 0 10 -5 1 0 258 0 0 4294967295 0 0 0 0 0 0 2147483647 65536 0 0 0 0 17 0 0 0

The 1234 in the above (4th field) is the PPID.
```