shared bash profile via dropbox

gistfile1.sh

alias sha1='openssl dgst -sha1'

SHARED_BASH_REMOTE=~/path/to/dropbox/shared_bash.sh
SHARED_BASH_TMP=~/.bash_shared.sh.tmp
SHARED_BASH_LOCAL=~/.bash_shared.sh
if [ -f $SHARED_BASH_REMOTE ]; then
    cp $SHARED_BASH_REMOTE $SHARED_BASH_TMP
    if [ -f $SHARED_BASH_LOCAL ]; then
        SHARED_LOCAL_SHA=`sha1 $SHARED_BASH_LOCAL | cut -f2 -d=`
        SHARED_TMP_SHA=`sha1 $SHARED_BASH_TMP | cut -f2 -d=`
        if [ "$SHARED_LOCAL_SHA" != "$SHARED_TMP_SHA" ]; then
            read -p "Remote shared bash config does not match backup; use remote shared bash config? " -n 1 -r
            echo
            if [[ $REPLY =~ [Yy]$ ]]; then
                cp $SHARED_BASH_TMP $SHARED_BASH_LOCAL
            else
                echo "Loading backup shared bash config"
            fi
        fi
    else
        read -p "Found remote bash config; use it? " -n 1 -r
        echo
        if [[ $REPLY =~ [Yy]$ ]]; then
            cp $SHARED_BASH_TMP $SHARED_BASH_LOCAL
        fi
    fi
    rm $SHARED_BASH_TMP
else
    echo "WARNING: $SHARED_BASH_REMOTE does not exist, trying local version"
fi
if [ -f $SHARED_BASH_LOCAL ]; then
    source $SHARED_BASH_LOCAL
else
    echo "WARNING: $SHARED_BASH_LOCAL does not exist; skipping"
fi