Unix interview questions part 34
Unix interview questions part 34
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. Which system call is used to run a new program?
Correct Answer is : exec
2. Which system call is used by the parent process to wait for the child process to complete?
Correct Answer is : exec
3. Redirection is a process of switching of the standard stream of data.
Correct Answer is : TRUE
4. How many files are used for representing different standard streams?
Correct Answer is : 3
5. Which stream is connected to the display?
Correct Answer is : standard output
6. Which stream is used for representing error messages?
Correct Answer is : standard error
7. The command wc < sample.txt will count data from the file sample.txt.
Correct Answer is : TRUE
8. Which symbol is used for taking input from standard input?
Correct Answer is : –
9. Which of the following symbol(s) can be used to redirect the output to a file or another program?
Correct Answer is : |, > and >>
10. The >> symbol is used to overwrite the existing file if it exists.
Correct Answer is : FALSE
11. Which file descriptor is used to represent standard error stream?
Correct Answer is : 2
12. We can redirect the error message to file named newfile using __________ command.
Correct Answer is : cat foo 2>errorfile
13. The category of commands which uses both standard input and standard output are called ____
Correct Answer is : filters
14. The contents of file001 are: 232 25*50 What will be the contents of result.txt? bc < file001 > result.txt
Correct Answer is : 429467296, 1250
15. Which of the following files are known as special files in UNIX?
Correct Answer is : /dev/null and /dev/tty
16. The size of /dev/null is always zero.
Correct Answer is : TRUE
17. Which symbol is used to redirect error messages to /dev/null?
Correct Answer is : >
18. Which file is used for indicating terminals?
Correct Answer is : /dev/tty
19. Which symbol is used to connect different streams?
Correct Answer is : |
20. We can use the > symbol along with pipe in a command.
Correct Answer is : TRUE
