tr command - how to replace the string “\n” with an actual newline (\n)

Question

I would like to use the tr command to replace all occurrences of the string \"\\n\" with a new line (\\n).

I tried tr \'\\\\n\' \'\\n\' but

Answer 1

Here's how to do it with sed:

sed 's/\\n/\n/g'

Example usage:

To replace all occurrences of \n in a file in-place:

sed -i 's/\\n/\n/g' input_filename

To replace all occurrences of \n through a pipe, and save into another file

cat file1 file2 file3 file4 | sed 's/\\n/\n/g' > output_file