21. The prompt issued by the shell is called . . . . . . . .
22. . . . . . . . . system call is used for renaming a file, directory or symbolic link.
23. The output of the following command is . . . . . . . .
$ cp abd/ .user_06
$ cp abd/ .user_0624. While entering text in input mode the data is saved in . . . . . . . .
25. We can provide multiple filenames as arguments to gunzip.
26. Which of the following system calls returns one or more file descriptors?
27. What is an absolute pathname?
28. A variable can be removed using . . . . . . . .
29. The name of the script is stored in which special parameter?
30. Which file is executed every time a second shell is called up?
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