make sure each script has back option

clean up old code

 Changes to be committed:
	modified:   scripts/aliases.sh
	modified:   scripts/git_config.sh
	modified:   scripts/linux_update.sh
	modified:   scripts/ssh_key.sh
	modified:   scripts/terminal_config.sh
	modified:   scripts/wordpress_dev.sh

scripts/aliases.sh

@@ -13,7 +13,7 @@ echo "# --------------------------------------------"
 if grep -q "alias wget" $HOME/.bashrc; then
    echo "already added aliases..."
 else
-   pause "Press enter to add useful aliases..."
+   pause "Press [Enter] to add useful aliases" true
 # alias useful shell commands, EOF must not be indented
 cat << EOF >> $HOME/.bashrc

scripts/git_config.sh

@@ -9,6 +9,12 @@ echo "#                                             "
 echo "# http://keegoid.mit-license.org              "
 echo "# --------------------------------------------"
-# configure git
-configure_git "$REAL_NAME" "$EMAIL_ADDRESS" "$GIT_EDITOR"
+# check if git is already configured
+if [ -e "$HOME/.gitignore_global" ]; then
+   echo "git is already configured."
+else
+   pause "Press [Enter] to configure git..." true
+   # configure git
+   configure_git "$REAL_NAME" "$EMAIL_ADDRESS" "$GIT_EDITOR"
+fi

scripts/linux_update.sh

@@ -10,9 +10,9 @@ echo "# http://keegoid.mit-license.org              "
 echo "# --------------------------------------------"
 # update programs maintained by the package manager
-pause "Press enter to update Ubuntu sources..."
+pause "Press [Enter] to update Ubuntu sources" true
 sudo apt-get -y update
-pause "Press enter to upgrade programs..."
+pause "Press [Enter] to upgrade programs" true
 sudo apt-get -y upgrade
 # install programs with apt-get

scripts/ssh_key.sh

@@ -10,6 +10,7 @@ echo "# http://keegoid.mit-license.org              "
 echo "# --------------------------------------------"
 if [ "$IS_SERVER" = true ]; then
+   pause "Press [Enter] to configure sshd service" true
    # make a copy of the original sshd config file
    sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.original
    # protect it from writing
@@ -22,8 +23,6 @@ if [ "$IS_SERVER" = true ]; then
    read -ep "Enter the ssh port number to use on the server: " -i "22" SSH_PORT
    # edit /etc/ssh/sshd_config
-   echo
-   pause "Press enter to configure sshd service..."
    sudo sed -i.bak -e "{
       s|#Port 22|Port $SSH_PORT|
       s|#ClientAliveInterval 0|ClientAliveInterval $CLIENT_ALIVE|
@@ -42,12 +41,12 @@ if [ "$IS_SERVER" = true ]; then
    # use ufw to limit login attempts too
    echo
-   pause "Press enter to configure ufw to limit ssh connection attempts..."
+   pause "Press [Enter] to configure ufw to limit ssh connection attempts..."
    sudo ufw limit ssh
    # disable root user access and limit login attempts
    echo
-   pause "Press enter to configure sshd security settings..."
+   pause "Press [Enter] to configure sshd security settings..."
    sudo sed -i -e "s|#PermitRootLogin yes|PermitRootLogin no|" \
                -e "s|PasswordAuthentication yes|PasswordAuthentication no|" \
                -e "s|#MaxStartups 10:30:60|MaxStartups 2:30:10|" \
@@ -59,7 +58,7 @@ if [ "$IS_SERVER" = true ]; then
    fi
    echo
-   pause "Press enter to restart the ssh service..."
+   pause "Press [Enter] to restart the ssh service..."
    sudo service ssh restart
 else
    # generate an RSA SSH keypair if none exists

scripts/terminal_config.sh

@@ -11,7 +11,7 @@ echo "# --------------------------------------------"
 # color terminal prompts
 if grep -q "#force_color_prompt=yes" $HOME/.bashrc; then
-   pause "Press enter to add terminal color prompts..."
+   pause "Press [Enter] to add terminal color prompts" true
    sed -i.bak -e "s|#force_color_prompt=yes|force_color_prompt=yes|" $HOME/.bashrc
 else
    echo "already set color prompts..."
@@ -20,9 +20,9 @@ fi
 # terminal history lookup
 [ -e $HOME/.inputrc ] || printf "" > $HOME/.inputrc
 if grep -q "backward-char" $HOME/.inputrc; then
-   echo "already added terminal history lookup..."
+   echo "already added terminal history lookup" true
 else
-   pause "Press enter to add terminal history lookup..."
+   pause "Press [Enter] to add terminal history lookup..."
 # terminal input config file, EOF must not be indented
 cat << 'EOF' >> $HOME/.inputrc
 # shell command history lookup by matching string

scripts/wordpress_dev.sh

@@ -9,6 +9,7 @@ echo "#                                             "
 echo "# http://keegoid.mit-license.org              "
 echo "# --------------------------------------------"
+pause "" true
 # wordpress development
 VVV_REQS=$(confirm "install virtualbox and vagrant for VVV?" false)
 if [ "$VVV_REQS" = true ]; then