Grepping for string containing dash

Question

I want to grep for the string "-X" in a file but it's confusing this as a command line argument.

I've tried

grep "-X"
grep \-X
grep '-X'

Answer 1

grep -e -X will do the trick.

Answer 2

how about

grep -- "-X"

Answer 3

I dont have access to a Solaris machine, but grep "\-X" works for me on linux.

Answer 4

you can use nawk

$ nawk '/-X/{print}' file