How to use Linux nano command

1. Introduction to the nano command

Nano is a free and easy-to-use small editor. Its purpose is to replace the default editor Pico in the non-free Pine software package. Nano not only replicates the look and feel of Pico, but also implements some features that are missing (or disabled by default) in Pico, such as "Search and Replace" and "Go to Line and Column Numbers". Nano is a character terminal text editor similar to the editor program under DOS. It is much simpler than vi/vim and is more suitable for Linux beginners. For example, in Ubuntu system, nano is a default editor.

2. Nano command usage examples

1. Command installation

[root@s142 ~]# yum install -y nano

2. Check the command version

[root@s142 ~]# nano -V
GNU nano version 2.3.1 (compiled 04:47:52, Jun 10 2014)

3. Get command help

[root@s142 ~]# nano --help

4. Edit a file

[wuhs@s142 ~]$ nano hi.txt

#5. Editing without automatic line wrapping

The nano command can open the specified file for editing, by default It will automatically break lines, that is, when you enter too long content in one line, it will automatically split it into several lines. However, processing certain files in this way may cause problems, such as the /etc/fstab file of the Linux system, so It is recommended not to use the automatic line wrapping function unless necessary, and use -w to enable editing mode.

[wuhs@s142 ~]$ nano -w hi.txt

6. Search string

If we want to search for a string from the open file, enter Ctl W to open the search box, enter the string and press Enter, the cursor will automatically locate the first result found.

7. Insert a file into the edited file

nano supports inserting a file into the edited file. Use Ctl R and enter in the input box. The path and file name of the file, the default is the current path.

8. Other shortcut keys

  The shortcut keys of the nano editor are Ctl or Alt key combinations. The following are commonly used shortcuts. key. If you need to know more, you can use Ctl G to get help on the shortcut keys.

##Ctl K Cut a lineAlt 6Copy a lineCtl UPaste a lineCtl YTurn one page forwardCtl VTurn one page backwardCtl OSave updatesCtl XExit edit modeCtl 6Start the mark, move the cursor, and press the end mark again. During this period, you can use it in conjunction with shortcut keys such as cut and copy.Ctl R Insert a fileCtl GGet helpCtl PMove the cursor one line upCtl NMove the cursor one line down

3. Nano command syntax and parameter description

1. Command syntax

#nano [OPTIONS] [[ LINE,COLUMN] FILE]…
#nano [Option] [[row, column] file name]…

2. Parameter description

Shortcut keys	Use

##-C , --backupdir=< ;Directory>Directory to store unique backup files-D , --boldtextUse bold text instead of color inversion -E , --tabstospacesConvert the entered tab characters to blanks-F , - -multibufferEnable multiple file buffer function-H, --historylogRecord and read the search/replace history string-I , --ignorercfilesDo not refer to nanorc files-K , --rebindkeypadFix the numeric keypad key confusion problem-L , --nonewlinesDo not add line breaks to the end of the file-N , --noconvertDo not convert from DOS/Mac format-O , --morespaceUse one more line when editing-Q , --quotestr=Quote represents string-R , --restrictedRestricted mode-S , --smoothScroll by row instead of half screen-T , --tabsize=Set the tab width to #number of columns-U , --quickblankStatus line flashes quickly-V , --versionDisplay version information and leave -W , --wordboundsmore accurately detect word boundaries##-Y < ;String> , --syntax=-c , --const-d , --rebinddelete-i, --autoindent-k, --cut-l , --nofollow-m , --mouse -o , --operatingdir=-p , --preserve-q , --quiet-r , --fill=-s , --speller=-t, --tempfile -u , --undo-v , --view-w , --nowrap-x , --nohelp-z , --suspend-$ , --softwrap

Parameter	Parameter Description
-h, -? , --help	Display help information
lines , Column	Start from the indicated column number and row number
-A , --smarthome	Enable smart HOME key
-B , --backup	Save backup of existing files
Syntax definition for highlighting
Continuously display the cursor position
Fix the backspace/delete key confusion issue
Automatically indent new lines
Cut from the cursor to the end of the line
Do not follow symbolic links, but overwrite
Enable mouse function
Set the operating directory
Preserve XON (^Q) and XOFF (^S) keys
Silently ignore startup problems, such as rc file errors
Set the wrap width to #number of columns
Enable alternative spell checker
Auto-save on exit, do not prompt
Allow universal undo [Experimental feature]
View (read-only) mode
Do not wrap automatically
Do not display the auxiliary area
Enable the suspension function
Enable soft line breaks

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