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#include "stddef.h" #include "sys/types.h" #include <unistd.h> #include "stdio.h" #include "string.h" char * ctermid(char * s) { static char termid[L_ctermid] = "/dev/tty"; if (s == NULL) { s = termid; } else { strcpy(s, termid); } return s; } /* POSIX(1) */