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21 lines
453 B
21 lines
453 B
#include "user_lib.h"
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#include "util/string.h"
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#include "util/types.h"
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int main(int argc, char *argv[]) {
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int fd;
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char str[] = "hello world";
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char *filename = argv[0];
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printu("\n======== echo command ========\n");
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printu("echo: %s\n", filename);
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fd = open(filename, O_RDWR | O_CREAT);
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printu("file descriptor fd: %d\n", fd);
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write_u(fd, str, strlen(str));
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printu("write content: \n%s\n", str);
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close(fd);
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exit(0);
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return 0;
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}
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