Heredoc for nested command in bash

Question

I need to ssh into a machine and execute a bunch of commands under sudo bash. Here is what I've tried:

sshpass -p "vagrant" ssh vagrant@33.33.33.100 "sudo bash -i -c <<EOF
    echo
    ls
    echo
EOF"

But it throws me 'bash: -c: option requires an argument\n'. How can I fix this?

The `-c` option requires an argument in the command line, not a heredoc. A heredoc is an input redirection. — Jdamian, Nov 19 '14 at 08:38
In addition, `-i` means 'interactive', does it not? How is it possible if you are redirecting its standard input? — Jdamian, Nov 19 '14 at 08:42
@anubhava, thank you, it solved my problem! Can you write an answer so that I can accept it? Also, I would like more details about why it wasn't working in the first place, if you have the time. — linkyndy, Nov 19 '14 at 08:45

score 5 · Accepted Answer · answered Nov 19 '14 at 09:10

You need to remove -c from your command line to make it accept heredoc:

sshpass -p "vagrant" ssh vagrant@33.33.33.100 "sudo bash <<EOF
    echo
    ls
    echo
EOF"

Also you may remove -i (interactive) option too.

bash -c expects you to provide all commands on command line so this may work too:

sshpass -p "vagrant" ssh vagrant@33.33.33.100 "sudo bash -c 'echo; ls; echo'"

1 Answers1