Re: Strawberry Perl: Windows hosts file not working?

I can vouch that gethostbyname will use the hosts file on Linux.

This one-liner resolves a hostname to an IPv4 address:

perl -w -MSocket -e 'my $pip=gethostbyname("www.google.com");my $ip=in
+et_ntoa($pip);print $ip,"\n";'
[download]

"Normal" resolution via DNS returns: 142.250.72.132

If I add this line to /etc/hosts:

127.0.0.1  www.google.com
[download]

The above one-liner returns: 127.0.0.1

So on Linux, Perl will use the hosts file (Well, technically, it use the resolver library). However, I don't have a Windows machine with Perl handy to test with so I do not know if it will also work there. No good reason it shouldn't.

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Re^2: Strawberry Perl: Windows hosts file not working? by soonix (Chancellor) on Feb 14, 2022 at 07:47 UTC
wouldn't that depend on what is defined in `/etc/nsswitch.conf` and/or `/etc/host.conf`? At least that's what man gethostbyname says.	[reply] [d/l] [select]
Re^3: Strawberry Perl: Windows hosts file not working? by enemyofthestate (Monk) on Feb 14, 2022 at 14:45 UTC
Yes, that is true. I haven't changed nsswitch.conf from the default for so long I'd forgotten about it. Mea Culpa	[reply]
Re^2: Strawberry Perl: Windows hosts file not working? by syphilis (Archbishop) on Feb 14, 2022 at 00:03 UTC
However, I don't have a Windows machine with Perl handy to test with so I do not know if it will also work there. I couldn't get your example to work on Windows 7 with Strawberry Perl-5.32.0: `C:\etc>type hosts 127.0.0.1 www.google.com.au C:\etc>perl -MSocket -wle "my $pip=gethostbyname('www.google.com.au'); +my $ip=inet_ntoa($pip);print $ip;" 142.250.66.195` [download] Maybe the hosts file needs to be elsewhere and/or named something else. (I also made a copy of etc/hosts named etc/hosts.txt.) Sorry ... I don't have much knowledge on this sort of stuff ... just reporting what I found. Cheers, Rob	[reply] [d/l]
Re^3: Strawberry Perl: Windows hosts file not working? by LanX (Saint) on Feb 14, 2022 at 01:02 UTC
For such things I used `C:\Windows\System32\drivers\etc\hosts` in the past. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery}	[reply] [d/l]
Re^4: Strawberry Perl: Windows hosts file not working? by syphilis (Archbishop) on Feb 14, 2022 at 03:46 UTC
For such things I used C:\Windows\System32\drivers\etc\hosts in the past Aaah, yes - that looks right. (The file already exists.) Sorry for the noise. Cheers, Rob	[reply]