 if let usage = shell("free | grep Mem | awk '{print $3 \" of \" $2}'")
 if let usage = shell("free | grep Mem | awk '{print $3 \" of \" $2}'")

amraboelela/SwiftLevelDB,amraboelela/SwiftLevelDB,amraboelela/SwiftLevelDB,amraboelela/SwiftLevelDB