CMD / BAT - line reading> write

Hello. There is a file with approximate content:

#text text2 text3 #text4 text5 

I need to read the file line by line and if the first character of the line is not # written to another file as "some_text line_from_first_file". Ie having worked on the file from the example, the script should give me:

 какой-то_текст text2 какой-то_текст text3 какой-то_текст text5 

I tried this:

 set file=file.txt for %%i in (%file%) do ( set test=%%i set var=%package:~0,1% if not "%var%" == "#" echo "какой-то_текст %test%" >> new_file.txt ) 

But nothing works. Advised:

 for /f %%i in ('findstr /v ^# file.txt') do echo какой-то_текст %%i >> new_file.txt 

But also does not work. Thanks in advance for your help