?? umask.c
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#include "apue.h"#include <fcntl.h>#define RWRWRW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)intmain(void){ umask(0); if (creat("foo", RWRWRW) < 0) err_sys("creat error for foo"); umask(S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); if (creat("bar", RWRWRW) < 0) err_sys("creat error for bar"); exit(0);}?? 快捷鍵說明
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