Sort CSV file based on first column

sort -k1 -n -t, filename should do the trick.

-k1 sorts by column 1.

-n sorts numerically instead of lexicographically (so "11" will not come before "2,3...").

-t, sets the delimiter (what separates values in your file) to , since your file is comma-separated.

I don't know why above solution was not working in my case.

15,517,218,619,48,258,909,479,4910,6710,9013,96159,9

however this command solved my problem.

sort -t"," -k1n,1 fileName

bash shell sorting unix csv

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