Q. To reverse any setting updated by set command we can use ____ symbol.

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Q. The ____ acts as a shorthand representation of the home directory.

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Q. Every shell uses at least one startup script in the user’s home directory, which is executed when the user logs in.

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Q. Which file is executed every time a second shell is called up?

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Q. Which of the following are history variables?

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Q. Which one of the following command will search history list for previous command having the last occurrence of string cvf?

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Q. Which of the following is not a major Unix shell?

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Q. Which was the first Unix shell?

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Q. The purpose of the PATH variable is to

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Q. What special character is used to designate the users home directory in the C shell?

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Q. The letters "rc" in .cshrc represent

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Q. A personal run control file for bash is

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Q. Personal run control files are stored

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Q. Lines in a run control file that begin with a # sign are

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Q. To see what aliases are active, you type

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Q. The shell in the Unix system is the

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Q. Shell provides us with an interface to the operating system.

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Q. On a UNIX system, there can be ____ shells running simultaneously.

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Q. There can be multiple kernels on a single UNIX system.

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Q. The prompt issued by the shell is called ______

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