How to remove everything before a certain string in a line?

[googlealchemist]

I know how to remove everything AFTER a certain string in each line using this as an example...if I have a bunch of lines each containing 'action=' and I want to keep everything before that, but delete everything after it...

action=. in find and replace would remove everything after action=

But how do i reverse this? I have tried different variations of that but can't get it to work...what would I use to do this?

Thanks

[cchris]

Search ^(.?)your_string(.)
Replace with your_string\2
Or just \2 if your_string isn't to be kept.

For this to work, use regular expressions, and uncheck the ". matches newline" option.

CChris