Q. Which command is used for acquiring superuser status?

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Q. Which of the following is used for creating user’s environment?

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Q. The main reasons for the success of pipes are

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Q. Which of the following are not filter programs?

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Q. Redirection in pipes can be achieved by using

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Q. Choose the correct statement.

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Q. The command who sort - file1 > file2

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Q. If the command cat x is executed after successfully executing the command time sort filename > x, then

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Q. If one exports a variable

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Q. Profilers are

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Q. The shell command :

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Q. Which of the following tools can be used to keep track of evolving versions of a file

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Q. lint can analyze the named source code for

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Q. Which of the following remarks about lex are true?

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Q. Which of the following programs are not interactive?

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Q. lex can be used for

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Q. The number of errors in the following shell script:

echo How are you?
read $answer

is

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Q. The read in the previous question is a

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Q. If lex .1 is a lex code then

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Q. The following program:

main()
{
close(1);
print("How R U?");
}

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