title: mktemp: failed to create file via template ‘/tmp/virtualenvwrapper-initialize-hook-XXXXXXXXXX’: Read-only file system
body: <p>I recently encountered the problem with my VM running Ubuntu 18.04. I have been using the same VM for months and was working fine and then all of a sudden when I tried to use <code>tab</code> to auto complete I got the error, </p>
  
  <pre><code>-bash: cannot create temp file for here-document: Read-only file system
  </code></pre>
  
  <p>I decided to reboot my VM, actually I ended up quitting virtual box and restarted it, and when the VM restarts I got the error shown below.</p>
  
  <pre><code>mktemp: failed to create file via template ‘/tmp/virtualenvwrapper-initialize-hook-XXXXXXXXXX’: Read-only file system
  touch: cannot touch '': No such file or directory
  ERROR: virtualenvwrapper could not create a temporary file name.
  
  ┌────────────────────────────────────────────────────────┐
  │                npm update check failed                 │
  │          Try running with sudo or get access           │
  │          to the local update config store via          │
  │ sudo chown -R $USER:$(id -gn $USER) /home/mark/.config │
  └────────────────────────────────────────────────────────┘
  </code></pre>
  
  <p>I ended up running the <code>sudo chown</code> command as suggested but the same problem remains.</p>
  
  <p>I've been searching for a solution and the closest I've found is 
  <a href="https://www.digitalocean.com/community/questions/tmp-folder-deleted" rel="nofollow noreferrer">https://www.digitalocean.com/community/questions/tmp-folder-deleted</a>. However I have verified the <code>/temp</code> folder's permission and it appears to be fine.</p>
  
  <pre><code>drwxrwxrwt 10 root root 4096 Dec 30 17:01 /tmp
  </code></pre>
  
  <p>Does anyone have any suggestions? Is there something wrong with my virtualenvwrapper?</p>
  
  <p>Side Note:</p>
  
  <p>I've seen some people talking about running out of disk space but I've only used 21%.</p>
  
  <pre><code>Filesystem      Size  Used Avail Use% Mounted on
  udev            967M     0  967M   0% /dev
  tmpfs           200M  5.9M  194M   3% /run
  /dev/sda2        98G   19G   75G  21% /
  tmpfs           997M     0  997M   0% /dev/shm
  tmpfs           5.0M     0  5.0M   0% /run/lock
  tmpfs           997M     0  997M   0% /sys/fs/cgroup
  /dev/loop0       90M   90M     0 100% /snap/core/8268
  /dev/loop1       90M   90M     0 100% /snap/core/8213
  tmpfs           200M     0  200M   0% /run/user/1000
  </code></pre>
  
  <p><code>mount</code> output:</p>
  
  <pre><code>sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
  proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
  udev on /dev type devtmpfs (rw,nosuid,relatime,size=989248k,nr_inodes=247312,mode=755)
  devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
  tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=204132k,mode=755)
  /dev/sda2 on / type ext4 (ro,relatime,data=ordered)
  securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
  tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
  tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
  tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
  cgroup on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime)
  cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
  pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
  cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
  cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
  cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
  cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
  cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
  cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
  cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
  cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
  cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
  cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
  cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
  systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=44,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=14041)
  debugfs on /sys/kernel/debug type debugfs (rw,relatime)
  mqueue on /dev/mqueue type mqueue (rw,relatime)
  hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
  configfs on /sys/kernel/config type configfs (rw,relatime)
  fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
  /var/lib/snapd/snaps/core_8268.snap on /snap/core/8268 type squashfs (ro,nodev,relatime,x-gdu.hide)
  /var/lib/snapd/snaps/core_8213.snap on /snap/core/8213 type squashfs (ro,nodev,relatime,x-gdu.hide)
  lxcfs on /var/lib/lxcfs type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
  tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=204132k,mode=700,uid=1000,gid=1000)
  </code></pre>