Bash syntax error: “[[: not found” [duplicate]

Answer 1

If you are checking for equality, shouldn't the if be ?

if [[ "${debugMode}" = "true" ]]; then .... fi

Answer 2

If your script is executable and you are executing it like ./getconfig.sh, the first line of your script needs to be:

#!/bin/bash

Without that shebang line, your script will be interpreted by sh which doesn't understand [[ in if statements.

Otherwise, you should run your script like bash getconfig.sh, not sh getconfig.sh. Even if your default shell is bash, scripts run with sh will use a reduced set of bash's features, in order to be more compliant with the POSIX standard. [[ is one of the features that is disabled.

Answer 3

Use:

bash scriptname.sh

instead of:

sh scriptname.sh