Using molgrep to search ZINC

you can use molgrep to search ZINC for all compounds containing a SMILES or SMARTS pattern, like this:

molgrep.py -p c2ccc1occc1c2 /raid6/db/zinc-may08/bysubset/10/10_p0.smi.gz

More about SMARTS can be found using google:

http://www.daylight.com/dayhtml/doc/theory/theory.smarts.html