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- #define _XOPEN_SOURCE
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <stdlib.h>
- int main()
- {
- int fd;
- char *cp;
- fd=open("/dev/ptmx",O_NOCTTY|O_RDWR);
- cp=ptsname(fd);
- if (cp==NULL)
- return EXIT_FAILURE;
- printf("ptsname %s\n",cp);
- return EXIT_SUCCESS;
- }
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