Unix interview questions part 39
Unix interview questions part 39
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Total Questions: 20
1. ____ command is the appropriate way to interrupt a program.
Correct Answer is : trap
2. Which of the following option is used with a set for debugging shell scripts?
Correct Answer is : -x
3. Suppose x =10, then what will be the value of x$x$?
Correct Answer is : x10$
4. Given x=10 then, x$x$ == $x$x. The given statement is ____
Correct Answer is : FALSE
5. A shell script stopped running when we change its name. Why?
Correct Answer is : $0 was used in the script
6. Where is the exit status of a command stored?
Correct Answer is : $?
7. Which of the following is false?
Correct Answer is : $* stores the number of arguments specified
8. test statement cannot ______
Correct Answer is : compare two files
9. ____ option is used with a test for checking if the file exists and has the size greater than zero.
Correct Answer is : -s
10. Every time shift command is used, the leftmost variable is lost.
Correct Answer is : TRUE
11. The UNIX shell is both _______ and _______ language.
Correct Answer is : scripting, interpreter
12. Which of the following function(s) are performed by an interactive shell?
Correct Answer is : job control, history, aliases
13. Every feature used in an interactive shell can also be used by a shell script.
Correct Answer is : FALSE
14. Which one of the following is arguably the best shell to use?
Correct Answer is : Bash
15. Which one of the following command is used to create a child shell?
Correct Answer is : sh
16. Shell variables are of ____ types.
Correct Answer is : 2
17. Suppose ABD_DIR is a local variable. Then it will be accessible to the child process.
Correct Answer is : FALSE
18. ____ command is used to display the environment variables only.
Correct Answer is : env
19. ____ command displays all the variables available in the current shell.
Correct Answer is : set
20. Environment variable names can be defined only in uppercase.
Correct Answer is : FALSE
