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Shell Scripting Interview Questions and Answers

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Ques 26. How can you find the length of a string in a shell script?

You can use the `expr length $string` or `${#string}` syntax to find the length of a string.

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Ques 27. Explain the use of the `declare` command in shell scripting.

The `declare` command is used to set attributes for variables in a shell script.

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Ques 28. What is the purpose of the `printf` command in shell scripting?

The `printf` command is used for formatted printing in shell scripts.

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Ques 29. How do you use arithmetic operations in a shell script?

You can use the `expr` command or $((expression)) syntax for arithmetic operations.

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Ques 30. Explain the use of the `eval` command in shell scripting.

The `eval` command is used to evaluate a command or an expression.

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