Search code examples
bashsortingalphanumeric

Sorting strings with numbers in Bash

I've often wanted to sort strings with numbers in them so that, when sorting e.g. abc_2, abc_1, abc_10 the result is abc_1, abc_2, abc_10. Every sort mechanism I've seen sorts as abc_1, abc_10, abc_2, that is character by character from the left.

Is there any efficient way to sort to get the result I want? The idea of looking at every character, determining if it's a numeral, building a substring out of subsequent numerals and sorting on that as a number is too appalling to contemplate in bash.

Has no bearded *nix guru implemented an alternative version of sort with a --sensible_numerical option?

Solution

  • Execute this

    sort -t _ -k 2 -g data.file
    • -t separator
    • -k key/column
    • -g general numeric sort