Resolve SC2115: 'Use "${var:?}" to ensure this never expands to /' #1647
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This prints a nice failure message and then exits if $DOKKU_ROOT is empty or unset:
$ cat sc2115.sh
#!/usr/bin/env bash
FOO=""
echo ${FOO:?}
$ ./sc2115.sh
./sc2115.sh: line 3: FOO: parameter null or not set
$ echo $?
1
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josegonzalez
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Nov 4, 2015
Resolve SC2115: 'Use "${var:?}" to ensure this never expands to /'
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https://github.com/koalaman/shellcheck/wiki/SC2115