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#include <pwd.h>
#include <stddef.h>
#include <string.h>
struct passwd *
getpwnam(const char *name)
{
struct passwd *ptr;
setpwent();
while ((ptr = getpwent()) != NULL)
if (strcmp(name, ptr->pw_name) == 0)
break; /* found a match */
endpwent();
return(ptr); /* ptr is NULL if no match found */
}