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Diff for /src/include/unistd.h between version 1.22 and 1.23

version 1.22, 1998/06/30 23:03:09 version 1.23, 1998/11/19 06:44:07
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 char    *getlogin __P((void));  char    *getlogin __P((void));
 pid_t    getpgrp __P((void));  pid_t    getpgrp __P((void));
 pid_t    getpid __P((void));  pid_t    getpid __P((void));
   pid_t    getpgid __P((pid_t));
 pid_t    getppid __P((void));  pid_t    getppid __P((void));
 uid_t    getuid __P((void));  uid_t    getuid __P((void));
 int      isatty __P((int));  int      isatty __P((int));

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Removed from v.1.22  
changed lines
  Added in v.1.23