This script automates the process of moving a file or directory, then creating a link from it's new location to it's old location. I am using it to add application config files to my Dropbox folder.

move-then-link-to.sh

#!/bin/bash
#
# Author: Ryan Long (ryan@rtlong.com)
#
# This script requires two arguments, akin to the `mv` command, and it automates the following process:
# - mv $1 $2
# - ln -s $2 $1
# 
# More info is below in the dohelp() function; or call the script with the `--help' option.
 
# Hack prevention
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
 
# Error codes
wrong_params=5
interrupted=99
default_error=1
 
# Function to echo in color. Don't supply color for normal color.
echo_color()
{
  message="$1"
  color="$2"
 
  red_begin="\033[01;31m"
  green_begin="\033[01;32m"
  yellow_begin="\033[01;33m"
  color_end="\033[00m"
 
  # Set color to normal when there is no color
  [ ! "$color" ] && color_begin="$color_end"
 
  if [ "$color" == "red" ]; then
    color_begin="$red_begin"
  fi
 
  if [ "$color" == "green" ]; then
    color_begin="$green_begin"
  fi
 
  if [ "$color" == "yellow" ]; then
    color_begin="$yellow_begin"
  fi
 
  echo -e "${color_begin}${message}${color_end}"
}
 
end()
{
  message="$1"
  exit_status="$2"
 
  if [ -z "$exit_status" ]; then
    exit_status="0"
  fi
 
  if [ ! "$exit_status" -eq "0" ]; then
    echo_color "$message Type --help" "red"
  else
    echo_color "$message" "green"
  fi
 
#  if [ "$exit_status" -eq "$wrong_params" ]; then
#    dohelp
#  fi
 
  exit $exit_status
}
 
# Define function to call when SIGTERM is received
trap "end 'Interrupted' $interrupted" 1 2 3 15
 
dohelp()
{
  cat <<'END-OF-HELP-MESSAGE'
Usage: move-then-link-to SOURCE DEST
  or:  move-then-link-to SOURCE DIRECTORY
Rename SOURCE to DEST, or move SOURCE to DIRECTORY.

This script requires two arguments, akin to the bash 'mv' command, and it automates the following process:
  - mv SOURCE DEST
  - ln -s DEST SOURCE

The script includes verification that the destination exists and should except those two arguments just like
'mv' would. That is, the following are equivalent:
  ~$ move-then-link-to .filezilla Dropbox/.config/.filezilla
  ~$ move-then-link-to .filezilla Dropbox/.config/
 Both will move the .filezilla directory to Dropbox/.config/.filezilla and then create a symbolic
link ~/.filezilla that points to /home/[username]/Dropbox/.config/.filezilla

As you may have noticed. I wrote this script to move application config files into my Dropbox
directory for synchronization with my other computers. To set those computers up to sync these
files, I will just create the link manually, and ignore any local files that mmy already exist.
END-OF-HELP-MESSAGE
 
  # Exit because you don't want the script to do anything after displaying help
  exit 
}

if [ -z "$*" ]; then
  dohelp
fi

SOURCE=$1
DEST=$2
shift 2
 
while [ -n "$*" ]; do
  flag=$1
  value=$2
 
  case "$flag" in
    "--help") 
      dohelp   ;;
    "--")
      break    ;;
    *)
      end "unknown option $flag." "$wrong_params"     ;;
  esac
 
  shift
done
 
if [ -z "$SOURCE" ]; then
  end "SOURCE not given." $wrong_params
fi
if [ -z "$DEST" ]; then
  end "DEST or DIRECTORY not given." $wrong_params
fi

if [ ! -e "$SOURCE" ]; then
  end "$SOURCE does not exist." $wrong_params
fi
if [ -f "$DEST" ]; then
  end "$DEST exists as a file." $wrong_params
fi

if [ -d "$DEST" ]; then
  # DEST is a directory. Set the LINK_TARGET var to what wv will assume
  TARGET_DIRECTORY="$DEST"
  LINK_TARGET="$TARGET_DIRECTORY"/`basename "$SOURCE"`
  
else
  # DEST is not a directory. check if it's parent is.
  TARGET_DIRECTORY=`dirname "$DEST"`
  if [ ! -d $TARGET_DIRECTORY ]; then
    # Parent isn't either.
    end "Neither $DEST nor $TARGET_DIRECTORY is a directory." $wrong_params
  fi
  # Parent is a directory; $DEST is the LINK_TARGET
  LINK_TARGET="$DEST"
fi
# canonicalize TARGET_DIRECTORY and LINK_TARGET into absolute paths
TARGET_DIRECTORY=`readlink -e "$TARGET_DIRECTORY"`
LINK_TARGET=`readlink -f "$LINK_TARGET"`
SOURCE=`readlink -e "$SOURCE"`
#echo "All good so far!! :-] Would be linking $LINK_TARGET to $SOURCE."

echo mv --verbose --interactive "$SOURCE" "$LINK_TARGET"
mv --verbose --interactive "$SOURCE" "$LINK_TARGET"

echo ln --verbose --interactive --symbolic --no-target-directory "$LINK_TARGET" "$SOURCE" 
ln --verbose --interactive --symbolic --no-target-directory "$LINK_TARGET" "$SOURCE"