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Script giving error-Unable to identfiy

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# 15  
Old 12-17-2013
It's still not working with bash


Best regards,
Vishal
# 16  
Old 12-17-2013
Do you use sh script.sh ... or just ./script.sh to run the script? If the first, change it to bash script.sh ...
This User Gave Thanks to hergp For This Post:
Vishal_dba
# 17  
Old 12-17-2013
Excellent catch!

I was using sh test4.sh

When I used ./test4.sh it ran fine


Could you please help me understand the logic?


Thank you!

Best regards,
Vishal
# 18  
Old 12-17-2013
When you use ./test4.sh, then the script is "executed" by the kernel. Now the script is just text and not a executable binary. So the kernel needs to execute an "interpreter" instead. If the file starts with #!, then the kernel recognizes this and executes the program defined between #! and the first newline character. The name of the script is passed as commandline argument to the interpreter.

When you type sh test4.sh, then you directly call the program sh and pass the scriptname on the commandline. The first line of the script is just a comment in this case and has no special meaning.

You can find more information here: Shebang (Unix) - Wikipedia, the free encyclopedia
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Vishal_dba
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