this post was submitted on 20 Sep 2023
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Linux
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From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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And what do you do when neither fuser not lsof return any results? Every single time I've had something stuck that refused to umount, I have gotten no help from either of these tools. One recent example was mounting a drive image as a loop device, modifying /etc/fstab, backing out of the mounted device so I could umount it.... and it completely refused.
umount -lusually works for meTrue, but it leaves things behind that can get in way when you go to mount other resources in the same folder. On my desktop I just reboot to clear things up, but on my servers it is usually months between reboots and I have to schedule it.