# How to quickly sum all the numbers in a file on Linux?

LinuxOperating SystemOpen Source

Consider that we have a file named bar that contains different numbers inside it. The bar file looks something like this

immukul@192 linux-questions-code % cat bar
11
12
13

We need to get the sum of all the numbers present in the above file.

There are plenty of approaches and solutions that we can consider that involve different commands and keywords. Let’s consider some of these possible solutions one by one.

The most basic approach is to open the file and read the contents and then calculate the sum of all the numbers by making use of the do while loop.

### Bash Script

sum=0
echo $sum In the above example, just replace the keyword bar with the name of your file and then save the file with a .sh extension. Run the commands shown below to successfully execute the script ## Commands chmod 777 shell.sh ./shell.sh ## Output 36 Another approach is to make use of the awk command that Linux provides us with. ## Command awk '{ sum +=$1 } END { print sum }' bar
36