https://homeostasis.scs.carleton.ca/wiki/index.php?action=history&feed=atom&title=Operating_Systems_2019F_Lecture_24 2026-05-18T20:02:23Z Revision history for this page on the wiki MediaWiki 1.42.1 https://homeostasis.scs.carleton.ca/wiki/index.php?title=Operating_Systems_2019F_Lecture_24&diff=22546&oldid=prev 2020-03-20T02:11:52Z

<p>Created page with &quot;==Video== The video from the lecture given on December 4, 2019 [https://homeostasis.scs.carleton.ca/~soma/os-2019f/lectures/comp3000-2019f-lec24-20191204.m4v is now available...&quot;</p> <p><b>New page</b></p><div>==Video==<br /> <br /> The video from the lecture given on December 4, 2019 [https://homeostasis.scs.carleton.ca/~soma/os-2019f/lectures/comp3000-2019f-lec24-20191204.m4v is now available].<br /> <br /> ==Notes==<br /> <br /> &lt;pre&gt;<br /> Lecture 24<br /> ----------<br /> assignment 4<br /> questions?<br /> <br /> exam topics<br /> - midterm stuff<br /> - dd, relation to system calls<br /> - mkfs.ext4, df, rsync, chown, mount, umount, sudo, fsck<br /> - truncate, holes in files, logical vs physical<br /> - sshfs inodes<br /> - restriction on userspace filesystems<br /> (root, other users can&#039;t access them)<br /> - sshfs performance<br /> - setting up keypair-based auth (authorized_keys, id_rsa, id_rsa.pub)<br /> - superblocks<br /> - trace command, what you can do with it<br /> (very picky commands so will be higher-level questions)<br /> - what ebpf is, what it can do<br /> - what are kernel modules, how they relate to rest of the kernel,<br /> how they are different from processes and ebpf scripts<br /> - why rootkits are bad, what they can do, how they are built<br /> - details of how the modules show in class work (conceptual level)<br /> <br /> this is basically it, but you should go and make sure you understand the<br /> assignments and tutorials (ask questions if you don&#039;t!)<br /> &lt;/pre&gt;</div>

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