41. Which of the following is not a special parameter used by the shell?
42. The UNIX shell is both . . . . . . . . and . . . . . . . . language.
43. Sometimes it is not possible to copy a file.
44. Which command is used to change the group owner of the file?
45. Which of the following system call is more powerful (in waiting mechanism) than wait system call?
46. vi editor has . . . . . . . . named buffers.
47. . . . . . . . . option is used with a test for checking if the file exists and has the size greater than zero.
48. Double quotes are more permissive than single quotes and allow the evaluation of the $ and ` itself.
49. Which one of the following is used for looping with a list?
50. Which one of the following commands will be used to delete all the instances of string 'manager' in file003?
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