"Don't tell other people."

Translation: 别告诉别人。

[ReedEugene]

I don't understand. Should it not be 不要告訴別人？

[Keith_APP]

Both has the same meaning.

[g-c-]

Here is a post explaining that 不要 and 别 are essentially interchangable althought they may, in some contexts, have barely distinguishable differences.

http://laowaichinese.net/bie-vs-bu-yao.htm