Bash feature in custom shell script not working

[Maik Qualmann]

The placeholders $INPUT and $OUTPUT are replaced with real absolute file paths, 
also escaped to handle spaces.
The script is primarily intended to enable external terminal programs to run 
image processing operations in a batch.

Because of your curly brackets, $INPUT is not found in the script and cannot 
be replaced.

Maik

Am Sonntag, 21. Juli 2024, 11:44:56 MESZ schrieb Florian Zimmermann:
> (Debian testing, digiKam 8.3.0, Batch Queue Manager -> User Shell Script)
> 
> I hope below is self-explanatory:
> 
> abc=${INPUT:3} # this is a bash feature to sub-string from offset 3, it
> works fine in a terminal echo $abc >>/tmp/f # NOK, it writes an empty
> string, why? echo $INPUT >>/tmp/f # OK echo $SHELL >>/tmp/f #OK for
> proving I'm really in a bash
> 
> What could I have missed? Thanks!