[paste] Merge multiple files line by line

[paste] Merge multiple files line by line

file1:

1

2

3

4

5

file2:

1

2

3

file3:

1

2

3

4

command :

paste -d "," file1 file2 file3 > newfile



output should be:

1,1,1

2,2,2

3,3,3

4,,4

5,,

Reference :

• 
  Merge multiple files line by line


• Merge two file line by line - online tool