32 lines
355 B
C
32 lines
355 B
C
/* logname.c */
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#include <unistd.h>
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#include <stdio.h>
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/* usage */
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int _usage(void)
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{
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fprintf(stderr, "%s", "Usage: logname\n");
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return 1;
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}
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/* main */
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int main(int argc, char * argv[])
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{
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char * lgnm;
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if(argc != 1)
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return _usage();
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if((lgnm = getlogin()) == NULL)
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{
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perror("getlogin");
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return 2;
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}
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printf("%s\n", lgnm);
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return 0;
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}
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