method
shebang
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shebang(bin_file_name)
public
Generates a #! line for bin_file_name's wrapper copying arguments if necessary.
If the :custom_shebang config is set, then it is used as a template for how to create the shebang used for to run a gem’s executables.
The template supports 4 expansions:
$env the path to the unix env utility $ruby the path to the currently running ruby interpreter $exec the path to the gem's executable $name the name of the gem the executable is for