UNIX stream editor

Create a directory called myseddir. Copy the following files to this directory.

data1.txt

data2.txt

data3.txt

Write a script that reads the contents of your myseddir directory and executes the following operations on any files it contains:

Transform the 1 to 4, 2 to 5, and 3 to 6.

Remove any trailing spaces at the end of a line

Remove all lines that begin with Today

Remove all blank lines

Direct all output to a file called usernameoutput