What is the use of "$?" Sign in shell script?


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write a shell script to identify the given string is palindrome or not?

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What is meant by $1 in shell script?

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How can any user find out all information about a specific user like his default shell, real-life name, default directory, when and how long he has been using the system?

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Determine the output of the following command: name=shubham && echo ‘my name is $name’.

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Determine the output of the following command: [ -z “” ] && echo 0 || echo 1

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How to print all array elements and their respective indexes?

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What is the first line of a shell script called?

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Set up a Sev 2 alert when the Primary WA service fails. A windows batch script needs to be created that will monitor the WA service on the Primary and when the service stops/fails a Sev 2 TT is generated for a particular team ?

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What are the different kinds of loops available in shell script?

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How to add some content in any file at some desired location without using VI or some other editor in UNIX

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