Write a program that behaves like the cp command when used, Computer Engineering

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Write a program that behaves like the cp command when used

Problem

1. Write a one-liner to convert all characters in a file to uppercase, and write the changes back to the same file without using redirection.

2. Refer to the example of converting URLs in HTML documents and implement it in perl. This time take care of the Error! Filename not specified.tag, which also refers to URLs.

3. Write a program that behaves like the cp command when used without options, and with two ordinary filenames as arguments.

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Computer Engineering: Write a program that behaves like the cp command when used

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Computer Engineering: Write a program that behaves like the cp command when used

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