tb () {
        if [ $# -eq 0 ]
        then
                cat | nc termbin.com 9999
        else
                if [ -f "$1" ]
                then
                        cat "$1" | nc termbin.com 9999
                else
                        echo "$*" | nc termbin.com 9999
                fi
        fi
}

bash xx
cd /tmp
rm -rf ./*
cd -
⬆️
enter