Q. In Unix, the command to enable execution permission for file “mylife” by all is ................

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Q. What will be the output of the following Unix command ?

$rm chap0\[1 - 3\]

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Q. Which of the following out commands will output "onetwothree"?

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Q. Assume that an implementation of Unix operating system uses i-nodes to keep track of data blocks allocated to a file. It supports 12 direct block addresses, one indirect block address and one double indirect block address. The file system has 256 bytes block size and 2 bytes for disk block address. The maximum possible size of a file in this system is

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Q. Which of the following set of Unix commands will always display “WELCOME” ?

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Q. Which of the following shell scripts will produce the output “my first script” ?

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Q. Which of the following statements is not true for UNIX Operating System ?

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Q. Consider the following UNIX command:

sort < in > temp; head -30 < temp; rm temp

Which of the following functions shall be performed by this command?

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Q. The mv command changes

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Q. A UNIX file system has 1 KB block size and 4-byte disk addresses. What is the maximum file size if the inode contains ten direct block entries, one single indirect block entry, one double indirect block entry and one triple indirect block entry?

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Q. A user level process in Unix traps the signal sent on a Ctrl + C input and has a signal handling routine that saves appropriate files before terminating the process. When a Ctrl + C input is given to this process, what is the mode in which the signal handling routine executes ?

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Q. Which one of the following options is not a shell in UNIX system?

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Q. Which command allows you to view your file 24 lines at a time ?

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Q. The Unix command used to find out the number of characters in a file is

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Q. Find the odd man out:

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Q. Which of the following changes permission to deny write permission to group and others?

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Q. Which of the following OS treats hardware as a file system?

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Q. An example of a memory management system call in UNIX is:

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Q. An example of a directory found in most UNIX system is:

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Q. The “nice” command is used in Unix:

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