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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://stereophonic.space/objects/9f87a3ea-7010-403f-933c-72e32ea3f459">:suya: (newt@stereophonic.space)'s status on Tuesday, 24-Mar-2026 02:48:39 JST</a><a href="https://stereophonic.space/users/newt" title="newt@stereophonic.space"><img src="https://gnusocial.jp/avatar/2025-48-20220726160400.webp" width="48" height="48" alt=":suya:" style="position: absolute; left: 0; top: 0;">:suya:</a><div><a href="https://minidisc.tokyo/notes/ak717ktdd6" rel="in-reply-to">in reply to</a><ul><li><li><a href="https://gnusocial.jp/user/158739" title="phnt@fluffytail.org">Phantasm</a></li></ul></div></section><article><p><a href="https://minidisc.tokyo/@SuperDicq">@SuperDicq</a> <a href="https://fluffytail.org/users/phnt">@phnt</a> </p><p>GNU Cat actually performs better than Busybox Cat because it does actual buffering and mmap trickery so it can handle large files better.</p><p>Or they could just</p>for(int i = 1; i &lt; argc; i++) {
  struct stat st;
  stat(argv[i], &amp;st);
  int fd = open(argv[i], O_RDONLY);
  sendfile(stdout, fd, NULL, st.st_size);
  close(fd);
}
<p>Here. That's the entire cat for you, give or take error handling.</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/6261323#notice-12338795">In conversation</a><time datetime="2026-03-24T02:48:39+09:00" title="Tuesday, 24-Mar-2026 02:48:39 JST">about 7 months ago</time> <span>from <span><a href="https://stereophonic.space/objects/9f87a3ea-7010-403f-933c-72e32ea3f459" rel="external" title="Sent from stereophonic.space via ActivityPub">stereophonic.space</a></span></span><a href="https://stereophonic.space/objects/9f87a3ea-7010-403f-933c-72e32ea3f459">permalink</a></footer></blockquote>

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:suya: (newt@stereophonic.space)'s status on Tuesday, 24-Mar-2026 02:48:39 JST:suya:
in reply to
- SuperDicq
- Phantasm
@SuperDicq @phnt
GNU Cat actually performs better than Busybox Cat because it does actual buffering and mmap trickery so it can handle large files better.
Or they could just
for(int i = 1; i < argc; i++) { struct stat st; stat(argv[i], &st); int fd = open(argv[i], O_RDONLY); sendfile(stdout, fd, NULL, st.st_size); close(fd); }
Here. That's the entire cat for you, give or take error handling.
In conversationabout 7 months ago from stereophonic.spacepermalink

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