11. We can redirect the error message to file named newfile using . . . . . . . . command.
12. Which of the following command doesn't accept a filename as an argument?
13. Which of the following is an invalid variable?
14. Shell variables are of . . . . . . . . types.
15. What is the significance of errno 13?
16. Which command is used for removing/deleting files in UNIX?
17. When multiple filenames are used with vi, we can switch to next file using . . . . . . . . command.
18. Which option is used with sort command to specify the field delimiter?
19. perl also supports use of for loop in the following manner.
for($i=0;$i<3;$i++){ }
for($i=0;$i<3;$i++){ }20. In how many categories are links divided?
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