🚀 go-pugleaf

Inside a shellscript, I would like to search for only the
first occurrence of a particular string, or in otherwords,
just one occurrence of the same string so I can set it to
a variable.

For example, say in file called systems, there is a list of
all the system architectures something like...

SS2
SS1
SS2
4/75

I'd like to use say grep such that when I search for SS2, it
only grabs one occurrence of SS2, and does not spit out SS2 twice.

Anyone got any hints?

Thanks,

/laura