Echo woes with variable expansion

Question

I want to append the string PROMPT_COMMAND='echo -ne \"\033]0;${USER}@${HOSTNAME}: ${PWD}\007\"' to the end of a .bashrc file across 4300 servers.

I'm having some difficulty in escaping, obviously I want the variables to not expand when being appended to the file so that the text is kept original.

How might I do so? I tried adding slashes to the beginning of the variables, but that didn't seem to be what I wanted.

Answer 1

Might be better to use a heredoc

cat >> .bashrc <<'+'
PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'
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