move-dir-mount.sh

#!/usr/bin/env bash
# move-dir-mount.sh


# Send errors to the installer's error log.
error_log=$(grep error_log /etc/refractainstaller.conf | cut -d"\"" -f2)
exec 2>> "$error_log"


# Do not use a trailing slash in the variables.

# The directory you want to move to another partition
source_dir=

# The other partition (full device name, like /dev/sdb2)
target_partition=

# Temporary mount point for the other partition, just to copy the files.
temp_mountpoint="/mnt"

if [[ -z "$source_dir" || -z $target_partition || -z $temp_mountpoint ]] ; then
	echo "ERROR: Empty variable in $0"
	exit 1
fi


mount "$target_partition" "$temp_mount_point"
rsync -av /target/"$source_dir"/ "$temp_mountpoint"/

idnum=$(blkid -c /dev/null -o value -s UUID "$target_partition")
fstype=$(blkid -c /dev/null -o value -s TYPE "$target_partition")

echo -e "UUID=$idnum\t$source_dir\t$fstype\tdefaults,noatime\t0\t2" >> /target/etc/fstab

rm -rf /target/"$source_dir"/*
umount "$temp_mountpoint"

exit 0