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Can anyone explain what's going on with DR here?

user@host:~# DRYRUN=true
user@host:~# echo "$DRYRUN"
true
user@host:~# $DRYRUN && export DR="-n"
user@host:~# echo $DR
user@host:~# $DRYRUN && export DR="-n" && echo $DR
user@host:~# $DRYRUN && export DR="-n" && echo "$DRYRUN --- $DR"
true --- -n
user@host:~# echo $DR
user@host:~# echo "$DRYRUN --- $DR"
true --- -n
user@host:~#

I Just want to assign DR to the string "-n" when DRYRUN is set to true but what I'm getting is confusing

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1 Answer 1

Reset to default
4

The value of DR (-n) is being interpreted as an option for echo. Specifically:

-n do not output the trailing newline

You should use printf instead:

printf '%s\n' "$DR"

Alternatively, you can add something so the -n isn't the first thing echo sees:

echo "DR: $DR"
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