Say for example a script begins like this
#!/bin/bash
#$ -S /bin/bash
#$ -l hostname=qn*
and then later down the page the actual script comes into play. My question is what does the “#$” symbol mean or do?
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Are you by any means running on a batch cluster? Like Sun Grid Engine? There might be special meanings in scripts intended to run as a batch job.
https://www.wiki.ed.ac.uk/display/EaStCHEMresearchwik/How+to+write+a+SGE+job+submission+script
Update:
above link blocks when used from stackoverflow.com (works from google.com)
alternatives: