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echo '#!/bin/sh

if [ ! -f /tmp/libflashplayer.so ]; then
    echo "/tmp/libflashplayer.so not found."
else
    for plugin in "/usr/lib/flashplugin-installer/libflashplayer.so" \
                  "/usr/lib/adobe-flashplugin/libflashplayer.so"
    do
        echo "plugin=$plugin"
        if [ -f "$plugin" ]; then
            echo "Upgrading ${plugin}..."
            mv -n "$plugin" "${plugin}~"
            cp /tmp/libflashplayer.so "$plugin"
        fi
    done
fi' > /tmp/script
sudo sh /tmp/script