vim preferences
How to use 4 spaces instead of tab in vim:
1 :set ts=4
2 :set number
3 :set autoindent
4 :set expandtab
5 :set softtabstop=4
6 :set shiftwidth=4
:set showmode
:set number
:set nonumber
:set ts=2 --------- display tab as 2 size(or add [:set ts=2] in ~/.vimrc, if not existing, just create one)
vim
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hjkl -------move cursor
x ---------- remove character
dd ---------- cut whole line
Y/yy ---------- copy one line
nY ------------ copy n line
yG ------------ copy to the end of file
yw ------------ copy to the end of word(inline)
y$ ------------ copy to the end of line (inline)
P ------------- paste above/before
p ------------- paste below/after
J ---------- join two lines
u ---------- undo
Ctrl-R ---------- redo
U ------------undo whole line
a -------------append
o -------------insert new line under current row
O -------------insert new line above current row
9k
3x
ZZ -------------write and exit
:q! ------------exit without saving
:e! ------------reload file content
:help
gg ------------- go header
G -------------- go bottom
nG ------------- go n-th line below
H -------------- header
M --------------- middle
L --------------Last
Ctrl-G ----------tell where am i
Ctrl-U ---------- move up
Ctrl-D ---------- move down
Ctrl-E
Ctrl-Y
Ctrl-F
Ctrl-B
zz -------------- bring the current row to the middle of screen
zt -------------- to top
zb -------------- to bottom
/search
?search
n ------------next
N ------------opposite direction search
search and replace:
:<start-line>,<end-line>/<search-regex>/<replacement>/g
eg. :1,$s/[\t| ]*$//g <---- remove all redundant tabs and whitespaces
or :%s/[\t| ]*$//g <---- %s equals 1,$s