Update bash.md

Substring from the right should include __parentheses__
2020-04-07 08:45:15 +08:00 · 2020-04-07 08:45:15 +08:00 · 42df935e43
parent cb4e03077f
commit 42df935e43
1 changed files with 1 additions and 1 deletions
--- a/bash.md
+++ b/bash.md
@ -193,7 +193,7 @@ comment
 ### Substrings

 | `${FOO:0:3}`  | Substring _(position, length)_ |
-| `${FOO:-3:3}` | Substring from the right |
+| `${FOO:(-3):3}` | Substring from the right |

 ### Length