9.2) Joining Files
Now if you type:
cat file1 file2
The cat command will output the following to your screen:
0.1 2.3 0.2 4.3 0.3 4.9 0.4 6.2 0.5 7.1 0.6 9.3 0.7 8.4 0.8 4.3 0.9 2.1 0.10 0.9
So cat is a neat way to join files. Try the above out for yourself. If files were always so small it wouldn’t be that important of a command but we can use this command to join files that are sometimes thousands of lines long.