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#!/bin/ksh is the first line in a shell script always
what is the importance of this line and why is it kept as the first line.
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Lines often define the edges of a form. Lines can be horizontal, vertical, or diagonal, straight or curved, thick or thin. They lead your eye around the composition and can communicate information through their character and direction.
Line: A very important Element of Art is “Line”. Imagine a work of art with no use of lines. Whether it is a drawing, painting, or sculpture, lines are important. They help form shapes, and also can communicate an idea or feeling.
The use of lines, or outlining, to create a sense of shape is most commonly used in cartoon style illustrations or animations. Another use of line in graphics is the ability to help suggest a tone or feeling in a work. Vertical lines can be used to create a sense of strength or stability.
There are many types of lines: thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc. and are often very expressive. Lines are basic tools for artists—though some artists show their lines more than others.
This line tells the operating system what interpreter to invoke to run the script.
Without it, there's no way to know that this script needs to be run using the ksh interpreter.
The sequence is known as a "shebang", and you can read more about it on Wikipedia.
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