Home / ubuntu / Questions / 1445928
Accepted
Mario Palumbo
Asked: 2022-12-17 11:01:52 +0800 CST

here-document with bash -c

  • 772

This example script:

cat <<- EOF | bash -c
    command1 args
    command2 args
    command3 args
    command4 args
    command5 args
EOF

Returns: bash: -c: option requires an argument
How do I use bash -c with here-document?

bash

1 Answers

  1. Best Answer

    You don't!

    The -c is only for a script passed in as the first argument, not piped in via standard input as a heredoc does.

    Instead you use -s, which can be omitted if there are no other arguments passed to the script.

    Also, after replacing with -s you could also simplify:

    cat <<- EOF | bash -s

    to:

    <<- EOF bash -s

    Like most cats, the cat does nothing.

    • 4