$ junk plain smatch: 1 plain grep: 1 Use of uninitialized value in pattern match (m//) at ./junk line 12. Use of uninitialized value in pattern match (m//) at ./junk line 12. Use of uninitialized value in pattern match (m//) at ./junk line 12. Use of uninitialized value in pattern match (m//) at ./junk line 12. Use of uninitialized value in pattern match (m//) at ./junk line 12. tied smatch: tied grep: 1