ar — archive library builderbzip2 — bzip2 command for distribution generationbunzip2 — bunzip2 command for distribution checkingchmod — change permissions on a filecat — output concatenation utilitycp
SS式样书(System Structure)PS式样书(Program Structure)PG(Programming)MT(Module Test)PTS式样书(Program Test Stylebook)PT(Program Test)ITS式样书(Integration Test Stylebook)IT测试(Integration Test)ST(System Te