What is greetings in Malay?

is -

a. Apa khabar? (What's news?)

b. Apa macam? (How are you?). Note c is pronounced as ch in English

c. Halo (same pronunciation as ) - Colloquial (As in a famous '60's Malay song - Halo halo kawan saya)

Good bye is -

a. Selamat jalan (Safe journey) Said to the person going

b. Selamat tinggal (Safe or good stay) Said to the person staying behind

c. Selamat malam (Safe or good night) Said for a short journey