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Shell Programming and Scripting

#!/bin/sh

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# 1  
Old 06-22-2010
#!/bin/sh
Why #!/bin/sh (the very first line of the script) is not treated as comment. Though it starts with #, which is meant for comment.
# 2  
Old 06-22-2010
Hi, see https://www.unix.com/showthread.php?t=36711
# 3  
Old 06-22-2010
"The sha-bang (#!) at the head of a script tells your system that this file is a set of commands to be fed to the command interpreter indicated. The #! is actually a two-byte "magic number", a special marker that designates a file type, or in this case an executable shell script [...]"

(Source: Advanced Bash-Scripting Guide)
# 4  
Old 06-22-2010
Just to add, (I came to know this, sometimes back with-in this forum)

if you invoke a script with the shell command line,
e.g

Code:
ksh some_script.sh

the sha-bang in the some_script.sh will be ignored and the script will be executed with ksh.
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