I learned some VI commands today.

Today I learned the VI command-general Linux technology-Linux programming and kernel information. The following is a detailed description. From the first time I touched Linux in to now, I will only use I,: w,: wq,: q! --. I have always wanted to learn, but I have never done it. It seems that I have always had this bad habit. If you want to do this, you don't need to do it.

Recall the vi command, mainly from the perspective of laruence. Memories, for fear of forgetting.

General mode:
Move cursor
Hjkl left bottom top right
0 to the beginning of the line
$ To the end of a row
H indicates the uplink of the current screen.
M in progress
L lower
NG to n
G to the end of the article

Search
/Word Backward Search
? Word forward search
: 1, $ s/word1/word2/gc replace word1 with word2, which needs to be confirmed
: N1, n2s/word1/word2/g replace n1, and word1 between n2 is word2

Enter edit mode
I insert
A add
R replace, R continuous replacement
O add a row

General commands
Delete characters from x and X
Dd deletes a row.
Yy copy
Ndd
Nyy
DnG deletes the content from the cursor to line N.
YnG copies the content from the cursor to line N.
P Paste
J. Merge the next row
U undo

Command
:! <Command> Run this command in shell.
: R filename: add the content of filename to the cursor
: W save
: Q exit
: E! Restore to initial state
: Set nu display row number
: Set nonu does not display row numbers
ZZ is saved and exited if it is modified. Exit directly if it is not modified.