add utils.sh

Author: Nosheen Adil

scripts/utils.sh

@@ -0,0 +1,29 @@
+# Detects if macOS
+isMac()
+{
+    [ "$(uname)" == "Darwin" ]
+}
+
+# Detects if Linux OS
+isLinux()
+{
+    [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]
+}
+
+# Detects if Ubuntu OS
+isUbuntu()
+{
+    [ "$(expr substr $(awk -F= '/^NAME/{print $2}' /etc/os-release) 2 6)" == "Ubuntu" ]
+}
+
+# Detects if Windows OS
+isWin()
+{
+    [ "$(expr substr $(uname) 1 5)" == "MINGW" ]
+}
+
+# Detects if arm architecture
+isArm()
+{
+    [ "$(arch)" == "aarch64" ]
+}