Add PID Of The Current Shell as a unix til

2026-01-07 17:18:02 +00:00 · 2016-05-27 12:02:11 -05:00
parent 22c1e1aae9
commit 102b2f566a
2 changed files with 25 additions and 1 deletions
--- a/unix/pid-of-the-current-shell.md
+++ b/unix/pid-of-the-current-shell.md
@@ -0,0 +1,23 @@
+# PID Of The Current Shell
+
+`$` expands to the process ID of the shell. So, you can see the PID of the
+current shell with `echo $$`.
+
+```bash
+> echo $$
+36609
+
+> zsh
+
+> echo $$
+45431
+
+> exit
+
+> echo $$
+36609
+```
+
+See the `Special Paramaters` section of `man bash` for more details.
+
+[source](http://stackoverflow.com/questions/21063765/get-pid-in-shell-bash)