遵命用英文怎么说？

Okie dokie

一般为士兵军人对上级的命令的回答,比较地道的

也有回答Yes, commander.

而平时一般人则习惯说YES SIR.

yes sir

...一般是 YES SIR 把..

Okie dokie来自美式英文, 是OK的变体, 表示赞同,许可. 最初来自1839年波士顿报纸的文字游戏栏目中, 作为"oll korrect" ("all correct(都对)"的变体)的首字母缩略字. 在随后的1840美国总统大选中, 政客们利用对OK的不同解释来扩大知名度, 拉选票, 同时也使OK名声大振. 美国内战确定了OK在语言中的地位. 十九世纪后期, OK开始了向英国以及世界各地的扩张.
OK常见的变体有:
kay or 'kay,
k or kk (短信中常用),
'mkay, m'kay or mkay,
Okey dokey, Okey Doke or Okie Dokie Okily dokily,
A-ok, Okey,
Okee or Okie

参考资料：
Okay is a term of approval, assent, or acknowledgment, often written as OK or O.K.. This is also known as AOK. When used to describe the quality of a thing, it denotes acceptability. However, its usage can also be strongly approving; as with most slang, its usage is determined by context.The historical record shows that O.K. appeared as an abbreviation for "oll korrect" (a conscious misspel