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Correct answer is (a) True

Best explanation: Both search and replace operations can make use of REGULAR expressions for MATCHING MULTIPLE patterns.

The CORRECT OPTION is (a) 1,$s/manager/ /g

To explain: When the TARGET pattern is left empty, then all the instances of the source pattern are deleted within the addressed lines in the file.

Correct ANSWER is (a) :address/source_pattern/target_pattern/flag

Explanation: For performing substitution, the correct syntax is:

:address/source_pattern/target_pattern/flag

For example, if we want to PERFORM substitution on line number 1 to 50, SOURCE pattern is ‘directory’ and TARGET pattern is ‘member’ then,

The correct ANSWER is (b) False

The explanation is: There are many flags like ‘g’, ‘gc’ which are used as flags. For EXAMPLE, when we left the flag FIELD empty in the FOLLOWING command:

The correct option is (d) 1,$s/professor/director/G and %s/professor/director/g

The explanation: We can replace 1,$ with %. It will WORK same as 1,$. ‘g’ flag is USED for GLOBAL replacement.

Correct ANSWER is (a) True

To EXPLAIN: The target pattern specified is optional while performing the substitution. If the target pattern is LEFT out, then instances of the SOURCE pattern in all addressed lines are DELETED.

Correct choice is (a) n

The best explanation: For REPEATING a search in the same direction in which the PREVIOUS search was made with EITHER / or ? we can use ‘n’ command. In this way, we can press ‘n’ repeatedly to scan all instances of the PATTERN.

The CORRECT choice is (b) N

For explanation: ‘N’ reverses the direction pursued by ‘n’, which MEANS that we can USE it to retrace our SEARCH path.

The correct option is (a) True

The best explanation: VI offers a POWERFUL feature, that is of substitution, which is achieved with the ex-mode substitute (s) COMMAND. It lets us replace a pattern in a FILE with some other pattern.

Correct option is (d) ?

To elaborate: We can use ? symbol in COMMAND mode for searching a particular PATTERN in the BACKWARD direction.The search BEGINS backwards to position the cursor on the first instance of the word. For example, if we are looking for the string “print” then we use the following command:

The correct CHOICE is (c) .

For EXPLANATION: Using (.) operator, we can SIMPLY repeat the last command that was used. The principle behind repeat command is, use the actual command once and then repeat it at other PLACES with DOT (.) command.

Right choice is (a) /

The best explanation: We can USE / symbol in command MODE for searching a particular pattern in forwarding direction.The search begins forward to POSITION the cursor on the first instance of the word. For EXAMPLE, if we are LOOKING for the string “print” then we can use the following command:

The CORRECT option is (d) / and ?

The best I can explain: vi is EXTREMELY strong in searching for a pattern. Searching can be made both in FORWARD and in REVERSE DIRECTIONS using / and ? respectively.

Right CHOICE is (a) True

The EXPLANATION: We can UNDO multiple changes using ‘u’ command by PREFIXING repeat factor with command. For example,

The correct choice is (a) 5J

For explanation I WOULD say: JOIN COMMAND joins the current line with the following number of lines. For EXAMPLE,

The correct option is (b) U

Best explanation: When a number of changes have to be made to a SINGLE line, VI allows us to discard all changes before you move away from the line. If the cursor has been MOVED to another line before INVOKING ‘U’, this command will not WORK.

Correct ANSWER is (a) True

The best explanation: We can copy LINES using ‘YY’ COMMAND and PASTE it at another location using ‘p’ or ‘P’ command.

The CORRECT choice is (a) P and P

Best EXPLANATION: Using ‘p’ and ‘P’ command we can put deleted text at a different location. For example, if we’d deleted a single character using ‘X’ then we can put that character at ANOTHER location by placing the cursor at that location and pressing ‘p’ or ‘P’.

The correct CHOICE is (b) 10yy

Easiest explanation: Since yanking is performed by the yy command HENCE to copy the current LINE and 9 lines below we can USE the command ’10yy’.

Correct answer is (a) True

Explanation: If we’d deleted a PART of a LINE, then ‘p’ will PUT it to the right of the cursor and ‘P’ will put it to the LEFT of the cursor. SIMILARLY, if we’d deleted the entire line then ‘p’ will put it below the current cursor and ‘P’ will put it above the cursor.

The correct CHOICE is (d) yy

Easiest explanation: To copy lines in VI editor, we can use ‘yy’ command. It works similarly as ‘DD’ command. For example, to yank 5 lines from current cursor we can use the command ‘5yy’.

Correct ANSWER is (a) DD

For explanation: We can delete ENTIRE LINES with ‘dd’ command. Just move the cursor ANYWHERE on the line and press ‘dd’ and the entire line will be deleted.

Correct answer is (B) X

Easiest explanation: For DELETING a single character, we can use ‘X’ command. It DELETES a single character but to the LEFT of the cursor.

The correct answer is (c) x

The EXPLANATION is: The simplest text deletion is ACHIEVED using ‘x’ command. This command deletes the character under the CURSOR and then the text on the right SHIFTS TOWARDS the left to fill up space.

Correct CHOICE is (a) d

Explanation: ‘d’ is not a command but is used as ‘DD’ to delete entire LINES. For EXAMPLE, to a delete a line INVOKE the command mode and press dd and the entire line will be deleted.

Correct ANSWER is (a) True

The EXPLANATION is: Copying text or characters is known as yanking in VI editor.

Right option is (c) M

The best I can EXPLAIN: For absolute movement, we can use the ‘G’ command along with the prefix FACTOR to locate offending lines. For example,

Right option is (d) ctrl-g

Easy EXPLANATION: At any TIME, to know the CURRENT LINE number we can use ctrl-g.

Right OPTION is (d) 20 ctrl-f

The explanation: To navigate through 20 pages simultaneously we can prefix the REPEAT factor with control KEYS.

The CORRECT OPTION is (a) True

To explain: To scroll half a page we can use CONTROL KEYS LIKE ctrl-d and ctrl-u.

Correct answer is (a) ctrl-f

The explanation is: Faster NAVIGATION can be achieved in VI using CONTROL keys for scrolling text in the WINDOW page by page. Ctrl-b scrolls ONE page backwards.

Correct answer is (a) 30$

The best EXPLANATION: We can prefix the repeat factor while WORKING with LINE extreme NAVIGATION commands.

The correct CHOICE is (d) $

To explain: ‘$’ COMMAND is used to navigate the cursor to the END of next line. This SYMBOL is also used in ex-mode to represent the LAST line.

Correct choice is (c) MOVE forward to the beginning of the word

Easiest explanation: We can USE ‘W’ command to move forward to the beginning of the word. To do so, simply press ‘w’ once for performing navigation a single time.

The CORRECT option is (a) True

Explanation: We can PREFIX repeat factor with word navigation COMMANDS for ease of navigation. For example, 5w TAKES the cursor 5 words forward while 5b takes the cursor 5 words backwards.

Correct answer is (b) move forward to the end of the word

For explanation I WOULD SAY: We can use ‘E’ command to move forward to the end of the word. To do so, simply PRESS ‘e’ once for performing navigation a single time.

Right answer is (a) move back to the BEGINNING of the word

To explain: We can use ‘b’ command to move back to the beginning of the word. To do so, SIMPLY press ‘b’ once for performing NAVIGATION a SINGLE time.

The correct option is (a) True

Best explanation: MOVING character by character is not always enough so we can perform NAVIGATION word by word by using word navigation commands (B, e and W).

The correct answer is (d) 3D

To elaborate: All the above commands EXCEPT 3d are NAVIGATION commands with prefixed repeat FACTOR.

Right choice is (a) True

For explanation: The REPEAT factor can be USED as a command prefix with all these FOUR commands. For example, to MOVE 20 characters to the right, we can USE ’20l’.