This reverts commit b1f6a5d9df.
In this particular case, the echo command was _not_ useless, but
converted the newlines back to spaces.
Add a comment into the code to make that obvious for the next one
looking at it like me.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
d3be1c51d2