add the $0 special variable to bash.md

2019-10-02 11:27:23 -04:00 · 2019-10-02 11:27:23 -04:00 · 8843c62e6d
parent 1e927dccfc
commit 8843c62e6d
1 changed files with 2 additions and 1 deletions
--- a/bash.md
+++ b/bash.md
@ -735,6 +735,7 @@ read -n 1 ans    # Just one character
 | `$?` | Exit status of last task |
 | `$!` | PID of last background task |
 | `$$` | PID of shell |
+| `$0` | Filename of the shell script |

 See [Special parameters](http://wiki.bash-hackers.org/syntax/shellvars#special_parameters_and_shell_variables).