When the OP said
I know the syntax for "or" (code example) but not "and"
I think he meant
I know the syntax for "or" (code example) but I don't know the syntax for "and"
rather than
I don't know the syntax for "or but not and"

In reply to Re^2: grep for lines containg two variables by ikegami
in thread grep for lines containg two variables by smoss74

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