OCLC 567139717. Hamilton Laboratories. Hamilton C shell User guide: I/O redirection: Commandsubstitution. web.archive.org. 2014-12-19. (原始内容存档于2014-12-19).
that reason, American authorities in England arranged to secure the substitution of U-111 for the cannibalized and dilapidated U-164. Dodson & Cant,第92
later a demand arose for another special-purpose program, gres, for substitution: g/re/s. Lee McMahon undertook to write it, and soon foresaw that there