9b07d86bf7
shellcheck reported
SC2006: Use $(...) notation instead of legacy backticked `...`.
Fixed by applying shellcheck's diff output as a patch.
66 lines
2.2 KiB
Bash
66 lines
2.2 KiB
Bash
# Are we running as root?
|
|
if [[ $EUID -ne 0 ]]; then
|
|
echo "This script must be run as root. Please re-run like this:"
|
|
echo
|
|
echo "sudo $0"
|
|
echo
|
|
exit 1
|
|
fi
|
|
|
|
# Check that we are running on Ubuntu 18.04 LTS (or 18.04.xx).
|
|
if [ "$(lsb_release -d | sed 's/.*:\s*//' | sed 's/18\.04\.[0-9]/18.04/' )" != "Ubuntu 18.04 LTS" ]; then
|
|
echo "Mail-in-a-Box only supports being installed on Ubuntu 18.04, sorry. You are running:"
|
|
echo
|
|
lsb_release -d | sed 's/.*:\s*//'
|
|
echo
|
|
echo "We can't write scripts that run on every possible setup, sorry."
|
|
exit 1
|
|
fi
|
|
|
|
# Check that we have enough memory.
|
|
#
|
|
# /proc/meminfo reports free memory in kibibytes. Our baseline will be 512 MB,
|
|
# which is 500000 kibibytes.
|
|
#
|
|
# We will display a warning if the memory is below 768 MB which is 750000 kibibytes
|
|
#
|
|
# Skip the check if we appear to be running inside of Vagrant, because that's really just for testing.
|
|
TOTAL_PHYSICAL_MEM=$(head -n 1 /proc/meminfo | awk '{print $2}')
|
|
if [ $TOTAL_PHYSICAL_MEM -lt 490000 ]; then
|
|
if [ ! -d /vagrant ]; then
|
|
TOTAL_PHYSICAL_MEM=$(expr \( \( $TOTAL_PHYSICAL_MEM \* 1024 \) / 1000 \) / 1000)
|
|
echo "Your Mail-in-a-Box needs more memory (RAM) to function properly."
|
|
echo "Please provision a machine with at least 512 MB, 1 GB recommended."
|
|
echo "This machine has $TOTAL_PHYSICAL_MEM MB memory."
|
|
exit
|
|
fi
|
|
fi
|
|
if [ $TOTAL_PHYSICAL_MEM -lt 750000 ]; then
|
|
echo "WARNING: Your Mail-in-a-Box has less than 768 MB of memory."
|
|
echo " It might run unreliably when under heavy load."
|
|
fi
|
|
|
|
# Check that tempfs is mounted with exec
|
|
MOUNTED_TMP_AS_NO_EXEC=$(grep "/tmp.*noexec" /proc/mounts || /bin/true)
|
|
if [ -n "$MOUNTED_TMP_AS_NO_EXEC" ]; then
|
|
echo "Mail-in-a-Box has to have exec rights on /tmp, please mount /tmp with exec"
|
|
exit
|
|
fi
|
|
|
|
# Check that no .wgetrc exists
|
|
if [ -e ~/.wgetrc ]; then
|
|
echo "Mail-in-a-Box expects no overrides to wget defaults, ~/.wgetrc exists"
|
|
exit
|
|
fi
|
|
|
|
# Check that we are running on x86_64 or i686 architecture, which are the only
|
|
# ones we support / test.
|
|
ARCHITECTURE=$(uname -m)
|
|
if [ "$ARCHITECTURE" != "x86_64" ] && [ "$ARCHITECTURE" != "i686" ]; then
|
|
echo
|
|
echo "WARNING:"
|
|
echo "Mail-in-a-Box has only been tested on x86_64 and i686 platform"
|
|
echo "architectures. Your architecture, $ARCHITECTURE, may not work."
|
|
echo "You are on your own."
|
|
echo
|
|
fi
|