1. $ for file in *.count ; do echo -n "$file: " ; awk '{ sum += $1 } END { print sum }' $file ; done
2. 2010.txt.count: 301
3. 2011.txt.count: 2214
4. 2012.txt.count: 1472
5. 2013.txt.count: 916
6. 2014.txt.count: 1015
7. 2015.txt.count: 918
8. 2016.txt.count: 661
9. 2017.txt.count: 766
10. 2018.txt.count: 791
11. 2019.txt.count: 838
12. 2020.txt.count: 1091
13. 2021.txt.count: 986
14. 2022.txt.count: 863
15. 2023.txt.count: 579
16. 2024.txt.count: 468