bash - Printing file content on one line -

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i'm lost trying thought straightforward : read file line line , output on 1 line.

i'm using bash on rhel. consider simple test case file (test.in) following content:

one 2 3 4

i want have script reads files , outputs:

one 2 3 4 done

i tried (test.sh):

cat test.in | while read in;     printf "%s " "$in" done echo "done"

the result looks like:

# ./test.sh  foure done #

it seems printf causes cursor jump first position on same line after %s. issues holds when doing echo -e "$in \c".

any ideas?

you can use:

echo -- $(<test.in); echo 'done'  1 2 3 4 done

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