Question

time sensative linux

Question 73 pts

What is the name given to a process not associated with a terminal?

1)	child process

2)	parent process

3)	user process

4)	daemon process

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Question 83 pts

Which regular expression would match Myfile1, Myfile2, and Mayflies but would not match Myfiles23?

1)

Myfile*

2)

Myfile$

3)

Myfile.

4)	Myfile1 | Myfile2

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Question 93 pts

How can you specify a text pattern that must be at the beginning of a line of text using a regular expression?

1)	Precede the string with a /

2)

\

3)

^

4) $

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Question 103 pts

Using wildcard metacharacters, how can you indicate a character that is NOT a or b or c or d?

1)

[^abcd]

2)

not [a-d]

3) [!a-d]

4)

!a-d

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Question 115 pts

Write the command to check if the file file1 contains any digits in the range of 0 to 5.

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Question 125 pts

Write the command to display the number of lines that contain the word linux in file file1.

Answer 1

Please find the answers below :

Question 7)

Ans : daemon process

A daemon process is a process which runs long in background, which are not interactive and have no controlling terminal. The rest of the processes child, parent and user are interactive and are also associated with a terminal.

Question 8)

Ans : Myfile.

Myfile* : it will search for all the occurance of files with names starting Myfile, and rest of characters can be anything, thus Myfiles23 will also be listed.

Myfile$ : it will search for all the occurance of files with names ending in Myfile

Myfile. : it will search for all the occurance of files with names starting Myfile, and next it should contain only one character, thus Myfiles23 will not be listed.

Myfile1 | Myfile2 : it will search for all the occurance of files with names Myfile1 and Myfile2, thus Myfiles and Myfiles23 will not be listed.

Question 9)

Ans : ^

^ symbol marks the begininng of a regex search line and $ symbol marks the end of line

Question 10)

Ans : [!a-d] : to search for a charcter in a range we use [a-d] which search for charcters a,b,c and d. But to search charecters except a,b,c and d we use a not symbol infornt to negate the previous search ie, [!a-d]