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I have an SSD (256gb) with two partitions, one of the with Ubuntu. I also have an HDD with /home and a partition for data (music, videos, etc). I would like to move /tmp (on the ssd) to /home (on the hdd). So far I have only found one answer saying that the way to do this is:

mv /tmp ~/tmp
ln -s ~/tmp /tmp

Would this actually work? Shouldn't I also change something in /etc/fstab? Thanks

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aripod
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  • Do you want to move the content of /tmp to /home or do you want to create a new partition on you HDD for /tmp. Many set ups have their /tmp directory entirely in main memory on a tmpfs file system by the way, since there's nothing in there that needs to survive a reboot. – David Foerster Oct 06 '14 at 13:58
  • The issue started when I wanted to open a file in audacity and I didn't have enough space on /root. I only have 10gbs available there. But I guess a better solution would be to move /tmp to RAM (I have 24gb of RAM). – aripod Oct 07 '14 at 06:47
  • I've just moved /tmp to RAM but /var/tmp keeps filling up. For what I read, /var/tmp should not be moved to ram. So I guess I should move it to /home (btw, I already have a partition for home at the hdd and that's where I would like to move /var/tmp – aripod Oct 07 '14 at 07:02
  • Good to know. I had /var/tmp symlinked to /tmp (luckily without problems so far). In my setup /var and /home are entirely on HDD, while the rest of / is on SDD. – David Foerster Oct 07 '14 at 10:23

1 Answers1

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It would, but you would also need to do some more things. The default permissions of /tmp are this:

# stat /tmp
...
Access: (1777/drwxrwxrwt)  Uid: (    0/    root)   Gid: (    0/    root)

Since the permissions of the link are the permissions of the target, you will have to change the permissions of ~/tmp. At the least, it should be world-readable and -writable:

chmod a+rwx ~/tmp

The t bit should also be set (see What is the "t" letter in the output of "ls -ld /tmp"?):

chmod +t ~/tmp

There might be other problems. If any directory in the path for ~/tmp doesn't have execute bit set for others, this folder will be inaccessible for most users.

I missed the obvious flaw in this:

Any attempt to use /tmp before your home directory is available will fail.

This might be one place where bind mounts are better than links.

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muru
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