diff --git a/SC2115.md b/SC2115.md index 2157a01..a9f25d9 100644 --- a/SC2115.md +++ b/SC2115.md @@ -21,6 +21,7 @@ Using `:?` will cause the command to fail if the variable is null or unset. Simi In the case command substitution, assign to a variable first and then use `:?`. This is relevant even if the command seems simple and obviously correct, since forks and execs can fail due to external system limits and conditions, resulting in a blank substitution. For more details about `:?` see the "Parameter Expansion" section of the Bash man page. + ### Exceptions: None.