This worked on Linux Mint 18 Mate to clone a user. PlayOnLinux DragonNaturallySpeaking failed to change enough user info that it was nonfunctional, but two other PlayOnLinux applications did get moved successfully.
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create a script file, I called mine clone-user.sh, make it executable and add the following. When you run it run it as sudo.
==start script==============
#!/bin/bash
# clone a user
# usage:
# cd /home/tech/scripts
# sudo bash clone-user.sh
echo "============="
echo "this script will create a new user"
echo "based on an existing user's data"
echo
echo "You will be shown a list of users who can currently log on"
echo "Remember which user you would like to clone."
echo "You will be asked for the new user's name, their password"
echo "and the old user to clone".
echo "============="
echo
echo -n "New user's name: "
read newuser
echo -n "New user's password: "
read newpassword
echo
echo "Current users you can clone:"
echo "----"
awk -F'[/:]' '{if ($3 >= 1000 && $3 != 65534) print $1}' /etc/passwd
echo
echo -n "Old user to clone: "
read olduser
echo
echo "You have selected: "
echo "----"
echo "new user: $newuser"
echo "new user password: $newpassword"
echo "old user: $olduser"
echo
olduser_GROUPS=$(id -Gn ${olduser} | sed "s/${olduser} //g" | sed "s/ ${olduser}//g" | sed "s/ /,/g")
olduser_SHELL=$(awk -F : -v name=${olduser} '(name == $1) { print $7 }' /etc/passwd)
echo "old user groups: "
echo "----"
echo $olduser_GROUPS
echo "olduser shell: "
echo $olduser_SHELL
read -rsp $'Press any key to continue or ctrl-c to exit...\n' -n1 key
useradd --groups $olduser_GROUPS --shell $olduser_SHELL $newuser
echo $newuser:$newpassword | chpasswd
read -rsp $'ready to make home direcoty -- ctrl-c to exit...\n' -n1 key
mkdir /home/$newuser
chown -R $newuser:$newuser /home/$newuser
echo
echo "Script should be done now."
echo
echo "Do you see your new users name below?"
echo
awk -F'[/:]' '{if ($3 >= 1000 && $3 != 65534) print $1}' /etc/passwd
echo
echo "We are now going to copy the old user's home folder to the new user"
echo "then change ownership to the new user"
echo
read -rsp $'Ready to copy home folder --- or ctrl-c to exit...\n' -n1 key
rsync -aPv /home/$olduser/. /home/$newuser/
chown -R --from=$olduser $newuser:$newuser /home/$newuser
echo
echo "Now we are going to change the names of files and folders to the new user"
echo
grep -rlI $olduser /home/$newuser/ . | sudo xargs sed -i 's/$olduser/$newuser/g'
echo
echo "Done now."
echo
read -rsp $'Press any key to exit...\n' -n1 key
echo
echo ==end script==============