Search and install desired cask in one move.

caskdo.sh

# Search for cask, select & install
## 0.1 Inlife
function caskdo {
    echo 'Searching...';
    OPTIONS=($(brew cask search $1 | grep -e '^[^=]'));

    if [[ "$OPTIONS" == *"No Cask found"* ]]; then 
        echo "Not found anything like \"$1\""
    else 
        echo 'Select number of cask you want to install: '
        select RESULT in ${OPTIONS[@]};
        do
            echo "Installing $RESULT";
            brew cask install $RESULT;
            echo "Done.";
            exit;
        done
    fi    
}


# Example
caskdo google

I think you mean select RESULT in ${OPTIONS[@]};, instead of select RESULT in $OPTIONS;.

@antuankhanna, thank you! Fixed 👍