How to append one file to another in Ubuntu Linux?

Question

I have two files: `file1` and `file2`. How do I append the contents of `file2` to `file1` so that contents of `file1` persist the process?

Answer 1

Using the following syntax, you can append to the end of a file.

> cat file1.txt

This is file number one.

> cat file2.txt

This is file 2.

> cat file2.txt >> file1.txt

> cat file1.txt

This is file number one.

This is file 2.

>

While the ">" will replace contents, ">>" will append the source to the destination without replacing it.

Answer 2

cat file1 file2 > tmp1

mv tmp1 file1