vim 查看某字符串出现的次数

http://blog.chinaunix.net/uid-23577393-id-1751983.html

To count how often any pattern occurs in the
current buffer use the substitute
command and add the ‘n‘ flag to avoid the
substitution.  The reported number
of substitutions is the number of
items.  Examples: >

       
:%s/./&/gn             
characters     

       
:%s/\i\+/&/gn          
words          

       
:%s/^//n               
lines          

       
:%s/the/&/gn           
"the" anywhere
       
:%s/\<the\>/&/gn        "the" as a
word

You might want to reset ‘hlsearch‘ or do ":nohlsearch".
Add the
‘e‘ flag if you don‘t want an error when there are no matches.

An
alternative is using |v_g_CTRL-G| in Visual mode.

If you want to find
matches in multiple files use |:vimgrep|.

：%s/mystring//gn 


                                                       
*count-bytes*
If you want to count bytes, you can use
this:

        Visually select the
characters (block is also
possible)
        Use "y" to yank the
characters
        Use the strlen()
function:
>
               
:echo strlen(@")
A line break is counted for one byte.

%s           
在整个文件中替换 (:help :s )
\w          
匹配一个字 (word) (:help /\w )
g          
替换行内所有出现的匹配 (:help :s_flags)
n          
只报告匹配的数目，并不真正进行替换(:help :s_flags)

vim
显示当前正在编辑的文件名
：f
或者ctrl+g

删除匹配的行
: g/template/d

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