Shell Programming and Scripting

Please help me. This is simple, but urgent problem for me.

I have a two files

file1

Code:

1  2  3  4  5  6
1  2  3  4  5  6  
1  2  3  4  5  6

.....

file2

Code:

11  12  13  14  15
11  12  13  14  15
11  12  13  14  15

.....

1) I hope to make a new file, file 3, that consists of 2nd column of file 1, and 5th column of file 2. And the result would be
file3

Code:

2  15
2  15
2  15

...

2) I hope to copy 2nd column of file1, then paste it to file 2 as 6th column. The result would be
file2

Code:

11  12  13  14  15  2
11  12  13  14  15  2
11  12  13  14  15  2

....

I've been tried with awk or cut command, but all of my codes didn't work. Please, somebody help me.
Linux code or vi editor method, anything is fine. Please help me

for case 1)

Code:

pr -tm -s" " file1 file2  | awk -F " "  '{print $2FS$11}'  > file3

for case 2)

Code:

pr -tm -s" " file1 file2  | awk -F " "  '{print $6FS$7FS$8FS$9FS$10FS$11FS$2}'  > file2_tmp
mv file2_tmp file2

No need for the overhead of the pr command:

Code:

# case 1
awk -v f2=file2 ' { c = $2; getline < f2; print c, $5; } ' file1 >output-file

#case 2
awk -v f2=file2 ' { c = $2; getline < f2; print $0, c; } ' file1 >output-file

This is the simple case; a bit of extra code is needed to handle the case where files are not of equal length. It sounds like both files are the same length, so I'll leave it simple.