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bashsorting

Lexicographically sort file by line, reading right-to-left

I'm looking for a command-line (ideally) solution that lets me sort the lines in a file by comparing each line from right to left.

For example...

Input:

aabc
caab
bcaa
abca

Output:

bcaa
abca
caab
aabc

I'll select the answer which I think will be the easiest to remember in a year when I've forgotten I posted this question, but I'll also upvote clever/short answers as well.

Solution

  • The easiest to remember would be

    reverse < input | sort | reverse

    You will have to write a reverse command though. Under Linux, there's rev.