Update AWS CLI

update-awscli.bash

#!/usr/bin/env bash

URL=https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip
AWS=/usr/local/aws-cli
BIN=/usr/local/bin
TMP=$(mktemp -d /tmp/update-awscli.XXXXXX)
ZIP=$TMP/awscli.zip

echo [+] Downloading $URL
curl -so $ZIP $URL

if [[ -e $ZIP ]]; then
    echo [+] Extracting files
    unzip -q $ZIP -d $TMP && rm $ZIP
    echo [+] Comparing versions
    if [[ -x $BIN/aws && -x $TMP/aws/dist/aws ]]; then
        OLD=$($BIN/aws --version | cut -d\  -f1)
        if [[ $OLD ]]; then
            echo [+] Current Version: $OLD
        fi
        NEW=$($TMP/aws/dist/aws --version | cut -d\  -f1)
        if [[ $OLD == $NEW ]]; then
            echo [=] Already on the latest version
        else
            echo [+] Updated Version: $NEW
            sudo $TMP/aws/install --bin-dir $BIN --install-dir $AWS --update
        fi
    else
        echo [-] Error comparing files
    fi
else
    echo [-] Error downloading file
fi

echo [+] Cleaning up
rm -rf $TMP