How to merge multiple files based on a timestamp

Question

I have 2 files

File 1:

01:12:00,001 Some text

01:14:00,003 Some text

02:12:01,394 Some text

File 2:

01:12:00,001 Some text

01:12:01,029 Some text

01:13:21,123 Some text

I need output as follows:

01:12:00,001 Some text

01:12:00,001 Some text

01:12:01,029 Some text

01:13:21,123 Some text

01:14:00,003 Some text

02:12:01,394 Some text    

How can I achieve this?

Answer 1

Because you're asking for the file to be sorted by the order that the fields appear in the file, this is the most basic use of sort:

sort file1 file2 > outputfile