I have been doing this by hand and I just can't do it anymore-- I have thousands of lines and I think this is a job for sed or awk.
Essentially, we have a file like this:
A sentence X
A matching sentence Y
A sentence Z
A matching sentence N
This pattern continues for the entire file. I want to flip every sentence and matching sentence so the entire file will end up like:
A matching sentence Y
A sentence X
A matching sentence N
A sentence Z
Any tips?
edit: extending the initial problem
Dimitre Radoulov provided a great answer for the initial problem. This is an extension of the main problem-- some more details:
Let's say we have an organized file (due to the sed line Dimitre gave, the file is organized). However, now I want to organize the file alphabetically but only using the language (English) of the second line.
watashi
me
annyonghaseyo
hello
dobroye utro!
Good morning!
I would like to organize alphabetically via the English sentences (every 2nd sentence). Given the above input, this should be the output:
dobroye utro!
Good morning!
annyonghaseyo
hello
watashi
me