FinalFantasy VI [Piano Collections] 07. Kids run through the city corner
07 vi text_editor
-
Upload
shay-cohen -
Category
Technology
-
view
101 -
download
0
description
Transcript of 07 vi text_editor
![Page 1: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/1.jpg)
VI/VIM Text Editors
![Page 2: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/2.jpg)
VI/VIM Overview• VI is an interactive text-based editor which can be used to
create and/or change files, it is the standard in UNIX systems for several decades.
• VI is hard to master but once mastered, it becomes a very powerful and quick editing tool.
• The Linux version is called VIM (VI Improved) which makes editing easier as it contains some in-editor navigation and editing tools which make the user’s life easier.
• Some alternatives to VI/VIM are: EMACS Pico Nano gedit
![Page 3: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/3.jpg)
The VI Command• Once started, VI will fill the entire terminal screen until exited
and returned to the shell prompt.• VI is old, it originated from a predecessor called “ed” which
was used on printer terminals hence its commands and shortcuts are different than the keyboard shortcuts we know in modern systems, such as CTRL-[letter].
• Starting VI: vi [filename(s)] – enters the editor while editing the file(s) specified. view [filename(s)] – opens the file(s) in read-only mode. vi –r [filename] – recovers a crashed file.
![Page 4: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/4.jpg)
VI Modes• VI has three work modes:
Insert mode – used for adding / editing text; hit ESC in insert mode to return to command mode.
Command mode – this is the default mode that VI enters once it is executed; the keys we hit will not be displayed on screen but this mode does allow us to use VI’s commands, which are short sequences of characters and key-combinations.
Last-line mode – displays a cursor in the bottom line of VI, allowing us to see the commands we type in; hit <CR> in order to return to command mode.
• Note that in order to move from Insert mode to Last-line mode, we must first pass through Command mode.
![Page 5: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/5.jpg)
Insert Mode• In order to append or insert new text we can use one of the
following options: a – Append text after cursor. A – Append text at the end of the current line. i – Insert text before the cursor. I – Insert text at the beginning of the line. o – Open a new line below the cursor. O – Open a new line above the cursor.
• There are many ways to achieve the same goal so there is no need to remember all of the shortcuts.
![Page 6: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/6.jpg)
Cursor Movement• VIM supports moving the cursor around with the keyboard
arrows; VI only allows arrow navigation in newer versions.• We can use the following alternatives to move around:
0 – go to the beginning of the line. $ - go to the end of the line. [n]G – jump to line number [n]. G – jump to last line in the file. gg – jump to the first line in the file. b – jump to the beginning of the word. e – jump to the end of the word. w – jump to the beginning of the next word. ^L – refresh the screen
• These are just some of the basic controls, there are many more.
![Page 7: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/7.jpg)
Command Mode• Pressing ESC returns VI from insert to command mode.• Basic command structure in VI:
[count][command][scope]
• Let’s break down the command 10dw for example: 10 – this is the count of objects we wish the command to affect. d – “d” refers to delete. w – “w” is the scope, in this case – words.
• The above command will delete 10 words, beginning at the current location of the cursor.
![Page 8: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/8.jpg)
Delete Commands• x – delete 1 character right of the cursor.• X – delete 1 character left of the cursor.• dd – delete the entire current line• dw – deletes to the beginning of the next word• d3l – deletes the next 3 characters. (l is lower-case L)• d0 – deletes to the beginning of the line.• d$ - deletes to the end of the line.• d1G – deletes to the beginning of the file.• dG – deletes to the end of the file.• D - deletes to the end of the line.
• Note that “d” commands delete to a buffer, as long as we have not quit VI we can always use undo/redo.
![Page 9: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/9.jpg)
Change Commands• r – replace (overwrite) under the cursor.• R – enter Replace mode (overwrites any existing text)• cc – changes a complete line.• cw – changes to the beginning of the next word.• c3l – changes the next 3 characters.• c0 – changes to the beginning of the line.• c$ – changes to the end of the line.• c1G – changes to the beginning of the file.• cG – changes to the end of the file.• C – changes to the end of the line.
![Page 10: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/10.jpg)
Cut, Copy & Paste Commands• y – yanks (copies) text to buffer• yy - yanks a complete line• yw – yanks to the beginning of the next word• y0 – yanks to the beginning of the line• y$ – yanks to the end of the line
• The “d” commands are used to cut text.
• p – paste everything in the buffer after the cursor location.• P – paste everything in the buffer before the cursor.
![Page 11: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/11.jpg)
Misc Commands• u – undo last change• J – join current and next line• . – repeat last command• ~ - invert letter case and move on character to the right.• ZZ – Save changes and exit VI
![Page 12: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/12.jpg)
Last-Line Mode• Search in VI:
/[pattern] – search forward for pattern matches ?[pattern] – search backwards for pattern matches n – repeat last search N – repeat last search in the opposite direction
• Search & Replace: :s/search-string/replace-with-string/g – this command will search for
“search-string” throughout the file and replace it with “replace-with-string”.
:10,20s/search-string/replace-with-string/g – same as above but the search will be performed only between lines 10 and 20.
:s/search-string/replace-with-string/gc – this command will search for “search-string” throughout the file and replace it with “replace-with-string” but ask for confirmation before each replacement.
![Page 13: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/13.jpg)
File Commands• :r [filename] – read the file and place its contents under the
cursor.• :w – write (saves changes).• :w! – override write-protection mode and save changes.• :w [filename] – save into a file with the specific name.• :wq – save changes and quit VI• :x – save changes and quit VI• :q – quit without saving• :q! – force quit without saving• :![command] – execute a shell command• :r![command] – execute a shell command and place its output in the file
being edited.
![Page 14: 07 vi text_editor](https://reader036.fdocuments.in/reader036/viewer/2022082921/5562f730d8b42a6f598b479a/html5/thumbnails/14.jpg)
VI Options• VI has many options that control its looks and behaviour.• For the full list of options, type: “:set all”• To enable an option, such as line numbering for example, use:
:set number
• To disable an options, use: :set nonumber
• The above rule is true for any one of VI’s options.