Usage summary of common Editors under Linux

The following commonly used editors for Linux are nano, vi, vim

nano editor

The general Linux distribution has this editor, so this is more versatile, but the function is relatively simple, like windows txt. If the system does not come with it, you can use one of the following commands to install it:

Apt-get install-y nano or yum-y install nano

Usage method:

1. Open or New File Command: nano File Name

2. There is a command prompt below the interface after entering, just watch the prompt operation, but the prompt here is not complete, you need to see the detailed prompt can use Ctrl+G to view. Here's a reminder: the symbol ^ in the command represents the Ctrl key, the letters need not be capitalized, and the minus sign represents the Alt key.

3. Summary of Common Commands:

Search: ^ W, multiple searches can press once more to return directly

Cut line: ^K

Copy line: ^ 6

Paste: ^U

vi editor

Usually Linux also comes with this editor, like windows Wordpad. If the system is not available, it is not recommended to install vi. It is recommended to install vim directly, which has the same function as vi and supports multiple plug-ins.

vi has two modes: command mode (all keys are commands), edit mode (all keys are input).

Mode Interchange: Uppercase I key can be used to enter command mode and Esc key can be used to launch command mode.

The vi command helps analyze:

root:~# vi -h
VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Jun 07 2019 15:35:43)

usage: vim [arguments] [file ..]       edit specified file(s)
   or: vim [arguments] -               read text from stdin
   or: vim [arguments] -t tag          edit file where tag is defined
   or: vim [arguments] -q [errorfile]  edit file with first error

Arguments:
   --			Only file names after this
   -v			Vi mode (like "vi")
   -e			Ex mode (like "ex")
   -E			Improved Ex mode
   -s			Silent (batch) mode (only for "ex")
   -d			Diff mode (like "vimdiff")  image git It's useful to compare changes in multiple files that way.
   -y			Easy mode (like "evim", modeless)
   -R			Readonly mode (like "view")   This prevents mistakenly altering files
   -Z			Restricted mode (like "rvim")
   -m			Modifications (writing files) not allowed
   -M			Modifications in text not allowed
   -b			Binary mode  binary mode
   -l			Lisp mode
   -C			Compatible with Vi: 'compatible'
   -N			Not fully Vi compatible: 'nocompatible'
   -V[N][fname]		Be verbose [level N] [log messages to fname]
   -D			Debugging mode
   -n			No swap file, use memory only
   -r			List swap files and exit
   -r (with file name)	Recover crashed session
   -L			Same as -r
   -A			start in Arabic mode
   -H			Start in Hebrew mode
   -F			Start in Farsi mode
   -T <terminal>	Set terminal type to <terminal>
   --not-a-term		Skip warning for input/output not being a terminal
   -u <vimrc>		Use <vimrc> instead of any .vimrc
   --noplugin		Don't load plugin scripts
   -p[N]		Open N tab pages (default: one for each file)
   -o[N]		Open N windows (default: one for each file)
   -O[N]		Like -o but split vertically
   +			Start at end of file
   +<lnum>		Start at line <lnum>
   --cmd <command>	Execute <command> before loading any vimrc file
   -c <command>		Execute <command> after loading the first file
   -S <session>		Source file <session> after loading the first file
   -s <scriptin>	Read Normal mode commands from file <scriptin>
   -w <scriptout>	Append all typed commands to file <scriptout>
   -W <scriptout>	Write all typed commands to file <scriptout>
   -x			Edit encrypted files
   --startuptime <file>	Write startup timing messages to <file>
   -i <viminfo>		Use <viminfo> instead of .viminfo
   -h  or  --help	Print Help (this message) and exit
   --version		Print version information and exit

Common commands (command mode):

Location correlation
   Status: Ctrl+G view current location
   Cursor movement: gg prefix, G prefix, ^prefix, $prefix, w prefix, w prefix, e prefix, e prefix, E prefix, {{prefix,}} the next prefix, [[last function,]] the next function
   Turn over: zz cursor return, Ctrl+F next page, Ctrl+B upper page, Ctrl+Y downlink, Ctrl+E upstream
   Find: / Find text (next match in n, last match in N)

Editing related
   Undo operation:u
   Redo operation: Ctrl+r
   Copy line: yy
   Cut line: dd
   Paste line:p
   Enter editing mode: a,o,i,A,O,I
   Delete Characters: d+ (Number) Direction,
   Replacement: r+ (number) letters to be replaced; global substitution:% s / matched text / text to be replaced / g

Selection correlation
    Selecting mode V, you can use o to switch the cursor position, select text to copy y, delete d, replace r, and so on.
    Selection mode Ctrl+V, you can use o to switch the first cursor position, mainly used for text editing by line, press I into the editing position, press Esc application and all lines. This function is very useful for annotating code.