This question is strongly related to this and this question. I have a file that contains several lines where each line is a path to a file. Now I want to pair each line with each different line (not itself). Also a pair
A B is equal to a
B A pair for my purposes, so only one of these combinations should be produced.
files.dat reads like this in a shorthand notation, each letter is a file path (absolute or relative)
a b c d e
Then my result should look something like this:
a b a c a d a e b c b d b e c d c e d e
Preferrably I would like to solve this in bash. Unlike the other questions, my file list is rather small (about 200 lines), so using loops and RAM capacity pose no problems.