windows batch command to detect ip address from hosts file

Question

can any one, help me to detect any statements which are not having #, ie. non commented statements from hosts file (/system32/drivers/etc/hosts) using windows batch commands ?

For example : ip address specified in that file which will not have #

Answer 1

这对我有用：

findstr "^[^#]*[0-9a-f][.:][0-9a-f]" c:\windows\system32\drivers\etc\hosts

Answer 2

这将找到非注释行

find /v "#" < hosts

Answer 3

Not completly sure this does not leave something without filtering. But

findstr /R /c:"^[^#]*[0-9a-f:.]" %systemroot%\system32\drivers\etc\hosts

It will incorrectly? detect lines that contains invalid formated ip address resolutions (ej: an ip address and no name) But should remove any commented/not active lines.

Answer 4

This code just show lines that don't have a # in first column, hope this helps:

setlocal EnableDelayedExpansion
for /f "delims=¶ tokens=*" %%A in ('"type %SystemRoot%\System32\drivers\etc\hosts"') do (
   set var=%%A
   if NOT "!var:~0,1!" == "#" (echo !var!)
)