groups starting with c2?

Shell Programming and Scripting
1

I have some groups and when i issue a command like
groups $LOGNAME
it displays in one line
rfautosys c2ru cash2
I want to fetch only group starting with c2 but when i grep i am getting full line. Can someone advise
on this please as how i can get output as c2ru?

2

what if you try

groups | tr " " "\n" | grep "^c2"
3

Thanks Joeyg, This is what i was looking.

Cheers,
gehlnar