I need to know the list of all entry nodes. Is it possible to do this? I found here https://www.dan.me.uk/tornodes a list of all nodes or only exit nodes but I only need entry nodes.
You already have them in that list, you only need to look at those with the "Guard" flag which specifies that they're entry nodes, for example:
4484.0298.4949.1082|ServerName|443|80|GFHRSDV|259492|Tor 0.2.9.10|
You'll only have to extract those with the G flag.
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According to the page it is: "NOTE: This is a FULL list including more than just exit nodes. If you only wish to block exit nodes you NEED to process the list to include only flags E and/or X!". It's probably the Gs (Guards) you want. – Peter Gerber May 2 '17 at 11:34
https://atlas.torproject.org/#search/flag:Guard Here you can see also all nodes with the flag "Guard".
As NewUser suggested, go to https://metrics.torproject.org/rs.html#search/flag:Guard, add your filters and with a quick network inspection, you will find out that there is a JSON endpoint listing all the entries and it has filters too.
For example, to get all the running Exit nodes, we have
https://onionoo.torproject.org/details?search=flag:Exit%20running:true
to get all the running Guard nodes, we have
https://onionoo.torproject.org/details?search=flag:Guard%20running:true
grep -B2 "^s.*Guard" /var/lib/tor/cached-microdesc-consensus | grep "^r" | awk '{print $6 ":" $7}'– cacahuatl May 2 '17 at 18:51