With no command line arguments mount displays all mounted file systems, e.g.:/dev/sdy8 on /bar type ext4 (rw,relatime,lazytime,data=ordered)/dev/sdx6 on /baz type ext4 (rw,relatime,lazytime,errors=remount-ro,data=ordered)/dev/sdz9 on /foo type ext4 (rw,relatime,lazytime,data=ordered){ etc... }How can these be sorted by time, specifically the respective times each file system was first mounted?Because sort can take care of the actual numerical sorting, the question can be simplified to:  since boot time, how to find when a mounted file system was mounted?
Sort mount points by mount time
linux;mount;sort