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Shell Scripting Interview Questions and Answers

1
What is shell script?

A shell script is a command containing text file that contains one or more commands.

2
What is a shell?

Shell is a interface between user and the kernel. Even though there can be only one kernel ; a system can have many shell running simultaneously . Whenever a user enters a command through keyboard the shell communicates with the kernel to execute it and then display the output to the user.

3
What is the syntax of while loop in shell scripting?

The while loop is used to repeat its block of commands a number of times. It is different from for loop, it iterates until the while condition is no longer true.

  1. while [ test_condition ]
  2. do
  3. commands...
  4. done
4
What is an inode block?

This block contains the inode for every file of the file system along with all the file attributes except its name.

5
Why is the use of shell script?

It is used by system administrators to issue numbers of commands to accomplish the task. All commands are added together in a text file (shell script) to complete daily routine tasks.

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