newline in sed code example

Example 1: sed add newline

For substituting with newline use sed command to replace a match with a
not used char and tr command to replace that char with a newline '\n'
#For example:
echo "123." | sed -E 's/([[:digit:]]*)\./\1|next line/' | tr '|' '\n'

Example 2: sed match newline

sed 's/\n/[replacement]/g' file #Use this command to replace newlines