shell - Effects of comment (#) lines before and/or after the comment-like #!/bin/sh line -

example one

#!/bin/sh # purpose: print out current directory name , contents pwd ls

example two

# purpose: print out current directory name , contents #!/bin/sh pwd ls

what difference – if make first line comment(#), #!/bin/sh second line, happen?

what meaning of #!/bin/sh ?

what difference between 1st & 2nd shell scripts..?

no difference in output. time execute both little different interpreter reads line 1 one.

if give comment(#) in 1st line after #!/bin/sh in 2nd line happen ?

any line started (#) except shebang(#!) treated comment in shell script.

what meaning of #!/bin/sh ?

its path(here - /bin/sh) interpreter used after shebang (#!) . shell try use interpreter language mentioned after shebang execute script.

DIs