Add Separator Line Between Commands on Linux Terminal

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# Fill with minuses
# (this is recalculated every time the prompt is shown in function prompt_command):
fill="--- "

reset_style='[33[00m]'
status_style=$reset_style'[33[0;90m]' # gray color; use 0;37m for lighter color
prompt_style=$reset_style
command_style=$reset_style'[33[1;29m]' # bold black
# Prompt variable:

PS1="$status_style"'$fill tn'"$prompt_style"'${debian_chroot:+($debian_chroot)}u@h:w$'"$command_style "

# Reset color for command output
# (this one is invoked every time before a command is executed):
trap 'echo -ne "e[0m"' DEBUG


function prompt_command {

# create a $fill of all screen width minus the time string and a space:
let fillsize=${COLUMNS}-9
fill=""
while [ "$fillsize" -gt "0" ]
do
fill="-${fill}" # fill with underscores to work on
let fillsize=${fillsize}-1
done

# If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
bname=`basename "${PWD/$HOME/~}"`
echo -ne "33]0;${bname}: ${USER}@${HOSTNAME}: ${PWD/$HOME/~}07"
;;
*)
;;
esac

}
PROMPT_COMMAND=prompt_command