[attach]10294[/attach]
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Lesson 2.1: DELETION COMMANDS
** Type dw to delete a word. **
1. Press
2. Move the cursor to the line below marked --->.
3. Move the cursor to the beginning of a word that needs to be deleted.
4. Type dw to make the word disappear.
NOTE: The letter d will appear on the last line of the screen as you type
it. Vim is waiting for you to type w . If you see another character
than d you typed something wrong; press
---> There are a some words fun that don't belong paper in this sentence.
5. Repeat steps 3 and 4 u[attach]10294[/attach]ntil the sentence is correct and go to Lesson 2.2.
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Lesson 2.2: MORE DELETION COMMANDS
** Type d$ to delete to the end of the line. **
1. Press
2. Move the cursor to the line below marked --->.
3. Move the cursor to the end of the correct line (AFTER the first . ).
4. Type d$ to delete to the end of the line.
---> Somebody typed the end of this line twice. end of this line twice.
5. Move on to Lesson 2.3 to understand what is happening.
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Lesson 2.3: ON OPERATORS AND MOTIONS
Many commands that change text are made from an operator and a motion.
The format for a delete command with the d delete operator is as follows:
d motion
Where:
d - is the delete operator.
motion - is what the operator will operate on (listed below).
A short list of motions:
w - until the start of the next word, EXCLUDING its first character.
e - to the end of the current word, INCLUDING the last character.
$ - to the end of the line, INCLUDING the last character.
Thus typing de will delete from the cursor to the end of the word.
NOTE: Pressing just the motion while in Normal mode without an operator will
move the cursor as specified.
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Lesson 2.4: USING A COUNT FOR A MOTION
** Typing a number before a motion repeats it that many times. **
1. Move the cursor to the start of the line marked ---> below.
2. Type 2w to move the cursor two words forward.
3. Type 3e to move the cursor to the end of the third word forward.
4. Type 0 (zero) to move to the start of the line.
5. Repeat steps 2 and 3 with different numbers.
---> This is just a line with words you can move around in.
6. Move on to Lesson 2.5.
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Lesson 2.5: USING A COUNT TO DELETE MORE
** Typing a number with an operator repeats it that many times. **
In the combination of the delete operator and a motion mentioned above you
insert a count before the motion to delete more:
d number motion
1. Move the cursor to the first UPPER CASE word in the line marked --->.
2. Type 2dw to delete the two UPPER CASE words
3. Repeat steps 1 and 2 with a different count to delete the consecutive
UPPER CASE words with one command
---> this ABC DE line FGHI JK LMN OP of words is Q RS TUV cleaned up.
NOTE: A count between the operator d and the motion works similar to
using the motion without an operator.
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Lesson 2.6: OPERATING ON LINES
** Type dd to delete a whole line. **
Due to the frequency of whole line deletion, the designers of Vi decided
it would be easier to simply type two d's to delete a line.
1. Move the cursor to the second line in the phrase below.
2. Type dd to delete the line.
3. Now move to the fourth line.
4. Type 2dd to delete two lines.
---> 1) Roses are red,
---> 2) Mud is fun,
---> 3) Violets are blue,
---> 4) I have a car,
---> 5) Clocks tell time,
---> 6) Sugar is sweet
---> 7) And so are you.
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Lesson 2.7: THE UNDO COMMAND
** Press u to undo the last commands, U to fix a whole line. **
1. Move the cursor to the line below marked ---> and place it on the
first error.
2. Type x to delete the first unwanted character.
3. Now type u to undo the last command executed.
4. This time fix all the errors on the line using the x command.
5. Now type a capital U to return the line to its original state.
6. Now type u a few times to undo the U and preceding commands.
7. Now type CTRL-R (keeping CTRL key pressed while hitting R) a few times
to redo the commands (undo the undo's).
---> Fiix the errors oon thhis line and reeplace them witth undo.
8. These are very useful commands. Now move on to the Lesson 2 Summary.
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LESSON 2 SUMMARY
1. To delete from the cursor upto the next word type: dw
2. To delete from the cursor to the end of a line type: d$
3. To delete a whole line type: dd
4. To repeat a motion prepend it with a number: 2w
5. The format for a change command is:
operator [number] motion
where:
operator - is what to do, such as d for delete
[number] - is an optional count to repeat the motion
motion - moves over the text to operator on, such as w (word),
$ (to the end of line), etc.
6. To move to the start of the line use a zero: 0
7. To undo previous actions, type: u (lowercase u)
To undo all the changes on a line, type: U (capital U)
To undo the undo's, type: CTRL-R
snowflytosky 于 2008-11-11 22:32:33发表:
没有办法,有时候学习是没有直径的,这些都是从LINUX自带的帮助文件里考过来的,如果读这个都觉得难的话,那可真是有点困难了,本来LINUX的高层技术就不再中国,如果我们再不能读懂人家的东西,什么时候才能赶上人家,还有,软件工程类的学习英语是关键,所以,我们要逼着自己去读这些简单而又常见的文档,这样我们才能两方面都有提高.
cwqing1973 于 2008-11-11 13:32:10发表:
能看明白，而且还能用了，但是对于那些不懂英语又是新手的同志来说，这可是一个比较大的困难了。