====== SED - Change - Append a string after each line ======

If your sed allows in place editing via the **-i** parameter:

<code bash>
sed -e 's/$/string after each line/' -i filename
</code>

If not, you have to make a temporary file:

<code bash>
typeset TMP_FILE=$( mktemp )

touch "${TMP_FILE}"
cp -p filename "${TMP_FILE}"
sed -e 's/$/string after each line/' "${TMP_FILE}" > filename
</code>