31. Which command is used to change the ownership of a file?
32. Which command is used for removing an empty directory?
33. Which command is used by the administrator to modify some parameters of existing users?
34. Which command is used for unzipping files which are compressed using zip command?
35. Which built variable is used for defining the field delimiter in the output?
36. The command c0 will change the text from current cursor to the end of line.
37. To remove the file named my document.txt, which one of the following commands will be used?
38. Which of the following symbol(s) can be used to redirect the output to a file or another program?
39. Which key is used for deleting text?
40. What is a directory file?
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