Shell Scripting Questions et reponses d'entretien
Question 16. What is the purpose of the `basename` command in shell scripting?
The `basename` command is used to strip directory and suffix from filenames.
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Question 17. How can you check the status of the last command in a shell script?
You can use the `$?` variable to check the exit status of the last command.
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Question 18. Explain the use of the `expr` command in shell scripting.
The `expr` command is used for evaluating expressions in shell scripts.
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Question 19. What is the purpose of the `export` command in shell scripting?
The `export` command is used to make environment variables available to child processes.
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Question 20. How do you use the `while` loop in a shell script?
The `while` loop is used to repeatedly execute a block of statements as long as a condition is true.
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