installii

#!/bin/dash

echo "Installing is just creating symlink as below:
/PATH/ii to ./masterii
Where you want to install it to?
0) Exit
1) user level
2) system wide"
read -p "::: Select: " SELOPT

HEREDIR="$(dirname "$(readlink -f "$0")")"

userlevelinstall_func () {
    USERPATH=$(echo $PATH | sed 's/:/\n/g' | grep "/home/")
    if [ -z "$USERPATH" ]; then
        echo "::: You have no excutable PATH in your home directory.
::: You will neet to set excutable PATH in your home directory first.
::: Recommended way is putting the following in ~/.bash_profile file.
::: export PATH=\"\${PATH}:/home/username/.local/bin\""
    else
        echo "::: give symlink name or\n::: leave it blank for default name as \"ii\""
        read -p "::: type name or leave blank: " SLINKNAME
        if [ -z "$SLINKNAME" ]; then
            ln -s "$HEREDIR"/masterii "$USERPATH"/ii
        else
            ln -s "$HEREDIR"/masterii "$USERPATH"/"$SLINKNAME"
        fi
    fi
}

systemwideinstall_func () {
    echo "::: It is goining to be installed to /usr/local/bin.
::: You will need to type your password.
::: give symlink name or
::: leave it blank for default name as \"ii\""
    read -p "::: type name or leave blank: " SLINKNAME
    if [ -z "$SLINKNAME" ]; then
        sudo ln -s "$HEREDIR"/masterii /usr/local/bin/ii
    else
        sudo ln -s "$HEREDIR"/masterii /usr/local/bin/"$SLINKNAME"
    fi
}

case "$SELOPT" in
    0)
        exit 0
        ;;
    1)
        userlevelinstall_func
        ;;
    2)
        systemwideinstall_func
        ;;
    *)
        exit 0
        ;;
esac