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51.

Command ‘cat’ basically does ___

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52.

Which filter can be used to extract a/specific/range of character from the lines of text?

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53.

What is the full form of grep?

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54.

How can we execute a shell script if execute bit is off for a shell script?

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55.

Is it compulsory to have the extension ‘sh’ for a shell script?

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56.

Which command can be used to throw/return a value from the function?

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57.

What is a here document?

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58.

How can we capture commands displayable output in a shell variable?

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59.

Which switch can be used in test expression to determine a file as a regular file?

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60.

Which command can be used to perform arithmetical computations?

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61.

How can we get the execution status of the last executed command?

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62.

What is the value returned by a command after its successful execution?

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63.

Which shell variable holds the shell script file name?

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64.

Which command can be used to delete a shell variable?

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65.

How can we retrieve the value of the shell variable?

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66.

Which command can be used to alter the file access permissions?

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67.

What is a shebang line?

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68.

How can you display line numbers in vi editor?

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69.

What is yanking w.r.t vi editor?

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70.

Which alphabet keys can move the cursor equivalent to arrow keys?

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71.

How to open a file in read only mode using vi editor?

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72.

What is a process?

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73.

Which command can be used to print a document on the line printer typically?

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74.

Name the environment variable which can be used to change the primary shell prompt.

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75.

What is the meaning of execute permission on a directory?

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76.

What is difference between absolute and relative path?

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77.

What is the file descriptor which represents the STDIN.

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78.

What are the meta-characters which represent to match all and single chracters respectively?

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79.

Which command can be used to know about the directory path of a command?

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80.

Which command can give the manual of a command?

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81.

What does the second column signifies in the output generated by 'who' command?

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82.

At which company UNIX is designed first.

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83.

Which programming language is used in the design of UNIX OS.

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84.

Who designed the UNIX operating system?

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85.

What is a hidden file?

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86.

With the ls −l listing from first column output which nth character (out of 10) represents file type?

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87.

Name 5 variants of linux?

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88.

Is UNIX open source?

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89.

Name a command which can be used to restart the machine?

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90.

Is UNIX/Linux case sensitive from the console terminal end.

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91.

Name a command which can be used to shut down the system?

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92.

What are the various ways that you can disconnect/logout with the UNIX server from your console terminal?

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93.

What is the second column designates in the long listing of ls command’s output?

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94.

What is the name of the command to change the password?

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95.

Which program is responsible to bring the login prompt?

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96.

What is the role of kernel?

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97.

What is Sun micro systems UNIX called as?

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98.

What is soft link/symbolic link and which command can be used to create one?

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99.

Name the commonly used shells on different UNIX/Linux variants.

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100.

What is shell?

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