upload files/file sharing with curl or wget
Service can also scan for viruses.
https://transfer.sh/

Upload:
$ curl --upload-file ./hello.txt https://transfer.sh/hello.txt

Encrypt & upload:
$ cat /tmp/hello.txt|gpg -ac -o-|curl -X PUT --upload-file "-" https://transfer.sh/test.txt

Download & decrypt:
$ curl https://transfer.sh/1lDau/test.txt|gpg -o- > /tmp/hello.txt

Upload to virustotal:
$ curl -X PUT --upload-file nhgbhhj https://transfer.sh/test.txt/virustotal

Add alias to .bashrc or .zshrc:
===
transfer() {
    # write to output to tmpfile because of progress bar

    tmpfile=$( mktemp -t transferXXX )
    curl --progress-bar --upload-file $1 https://transfer.sh/$(basename $1) >> $tmpfile;
    cat $tmpfile;
    rm -f $tmpfile;
}

alias transfer=transfer
===
$ transfer test.txt