mirror of
https://github.com/SerenityOS/serenity
synced 2024-09-06 17:06:31 +00:00
33 lines
709 B
C++
33 lines
709 B
C++
#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <assert.h>
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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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printf("usage: cat <file>\n");
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return 1;
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}
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int fd = open(argv[1], O_RDONLY);
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if (fd == -1) {
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printf("failed to open %s: %s\n", argv[1], strerror(errno));
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return 1;
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}
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for (;;) {
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char buf[4096];
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ssize_t nread = read(fd, buf, sizeof(buf));
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if (nread == 0)
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break;
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if (nread < 0) {
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printf("read() error: %s\n", strerror(errno));
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return 2;
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}
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write(1, buf, nread);
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}
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return 0;
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}
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