shebang
The first line of a script, such as #!/bin/bash: the kernel uses it to pick the interpreter when the file runs as a program. With "bash file" the interpreter is already chosen and the line is a comment.
The first line of a script, such as #!/bin/bash: the kernel uses it to pick the interpreter when the file runs as a program. With "bash file" the interpreter is already chosen and the line is a comment.