29 lines
427 B
C
29 lines
427 B
C
#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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/**
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* @brief 用user id获取用户名
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* @details
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*
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* @param argc
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* @param argv
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*
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* @return int
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*/
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int main(int argc, char **argv)
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{
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if (argc < 2)
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{
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fprintf(stderr, "Usage: %s <user id>\n", argv[0]);
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exit(1);
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}
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struct passwd *pwdline;
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pwdline = getpwuid(atoi(argv[1]));
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puts(pwdline->pw_name);
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exit(0);
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} |