The Geeky Linux :: Ubuntu/Linux blog :: Open source Tips and Tricks :: Linux Howtos and Tutorials

This is to print the sum of all numbers in a file using awk.

If the file which we want to process is sum.txt, and it's content is :

cat sum.txt
1
3
2
4
5

 To find the sum of all these numbers we can use below command:

Sometimes we want to combine the lines in a file as single line. How to achieve this in linux using command line?

We can use the command 'paste' for this purpose.

From its man page,

paste - merge lines of files