COMPUTER SCIENCE AND ENGINEERING
UNIX
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A student wishes to create symbolic links in a computer system running Unix. Three text files named “file 1", “file 2” and “file 3” exist in her current working directory, and the student has read and write permissions for all three files. Assume that file 1 contains information about her hobbies, file 2 contains information about her friends and file 3 contains information about her courses. The student executes the following sequence of commands from her current working directoryln-s file 1 file 2ln-s file 2 file 3Which of the following types of information would be lost from her file system? (I) Hobbies (II) Friends (III) Courses
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(I) and (II) only
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(II) and (III) only
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(II) only
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(I) and (III) only
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Explanation:
Detailed explanation-1: -To make links between files you need to use ln command. A symbolic link (also known as a soft link or symlink) consists of a special type of file that serves as a reference to another file or directory. Unix/Linux like operating systems often uses symbolic links.
Detailed explanation-2: -Information about a collection of students is given by the relation studinfo(studId, name, sex). The relation enroll(studId, courseId) gives which student has enrolled for (or taken) that course(s). Assume that every course is taken by at least one male and at least one female student.
There is 1 question to complete.