Manipulate the columns of 2 files

Hello,

I have two files to be treated.
First file:

col1 col2 col3 col4

Second file:

colbis

• I try to add the unique column of the file 2 towards the file 1.
• To obtain the following result with a shell script ksh:

col1 col2 col3 col4 colbis

Thank you for your help

Any ideas/attempts from your side?

I don't know how to malipulate 2 files with awk.
I don't know where to start

No need for awk. For single line files as posted, try

cat file[12] | xargs
col1 col2 col3 col4 colbis

For multiline files try

paste -d" " file[12]
col1 col2 col3 col4 colbis

Thanks a lot
I also find the command paste:)