61. Which of the following option is used for checking if the file is readable or not?
62. awk makes a distinction between numeric and string variables.
63. Which symbol is used for matching a single character?
64. Which option is preferred while killing a process using SIGKILL signal (9)?
65. Which option is used with tr command for deleting characters?
66. For recursive compression, zip uses -r option.
67. If we create a file using cat command with the same filename which already exists in the current directory then,
68. It is essential to use whitespaces when we use [].
69. For comm command to work properly, files specified should be sorted.
70. What is the default delimiter used by the cut command for cutting fields?
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