How to write my Robot.txt

Somebody tell me how to write my robots.txt file?

I saw google had indexed those kind urls:

?cat=34&dir=asc&limit=20&mode=list
?cat=51&dir=asc&limit=15&mode=list
?cat=54&dir=desc&limit=15&mode=list
?cat=73&dir=desc&limit=20&mode=list
?cat=64&dir=desc&limit=25&mode=grid

This is sub catagory, the full url is like this kind: http://www.xxx.com/ddd?cat=64&dir=desc&limit=25&mode=grid

How to write the robots file to forbid google to index such urls?

You can do it directly through search console. Do you have search console set up through Google?

If you want to do it quick and dirty, you can do it through robots.txt, but it would be best to do it via meta tagging. Know what I'm saying?

coltreign said:

You can do it directly through search console. Do you have search console set up through Google?

If you want to do it quick and dirty, you can do it through robots.txt, but it would be best to do it via meta tagging. Know what I'm saying?

Click to expand...

I just fix this in google webmaster.

Cool! Be sure to give me a thumbs up.

Check your competitor robot txt file. it will help you to write robot txt file.