The way to resize via terminal on Ubuntu, is little complicate.
So, would like to learn which are these commands for resizing this directories (/usr & /root) and how to do it.
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You are referring to partitions? – andrew.46 May 10 '16 at 00:49
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Yes, but via terminal look the title.. – Morpheus May 10 '16 at 00:52
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to @Videonauth: Is not duplicate because the answers at quesion: How to resize partitions? aren't refered to terminal. Also, do not solve my problem. – Morpheus May 10 '16 at 00:55
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you won't like this, but by far the easiest way is to take a full backup, reinstall, and restore the backup. You have to take the full backup anyway in case the resizing fails, might as well put it to good use. – JayEye May 10 '16 at 01:46
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why did you create a separate root partition in the first place? The reasons for doing this have not existed in at least twenty years. – JayEye May 10 '16 at 01:47
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1@JayEye: I did it to experiment myself with Linux. – Morpheus May 15 '16 at 21:45
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Experimentation good :) – JayEye May 16 '16 at 02:48
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You can't resize partitions while there are mounted. This said you can extend them if they are using lvm.
If you are not using lvm, best is to boot on a livecd or usb and use gparted or parted tool if you prefer the command line.
By the way, nowadays the usual fashion to partition system is /, /home, swap. / at 20G is enough for most of people, swap the size of RAM and everything else in /home.
jmary
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