how to do replace in file?

[doscode]

Is any chance to do this in CMD? I have html file where I would like to replace some strings like this:

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<span></span>.

would be replaced by

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.<span>

Edit:
I found better to completely remove

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<span></span>

from the file.

[e4nd]

Sorry for my English, I use the translator

The file "file.txt"

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<span></span>.
<span></span>.
<span></span>.

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@echo off & setlocal enabledelayedexpansion
 ::
 :: remember the "^" before each ">", "<"
 :: replaces "<span> </ span>" -> ".<span>"
 ::
 set file=file.txt
 ::
 for /f "tokens=*" %%t in (%file%) do (
    set S=%%t
   set S=!S:^<span^>^</span^>.=.^<span^>!
   >>$tmp$ echo !S!
   )
   del %file%
   ren $tmp$ %file%
pause>nul

[doscode]

@e4nd:
I think this code is great because it removes white spaces from begin of every line which I also need. Thank you.

[doscode]

Thank you.

I finally decided to change the code, but it helped me.

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FOR /f "tokens=*" %%t in (%1) do (
   SET S=%%t
   if defined S (
     SET S=!S:^<span^>^</span^>=!
     >>$tmp$ echo !S!
   )
)