Sorting the files from multiple directories by timestamp

Hi,

I've two directories /home/folder1/ and /home/folder2/
There are multiple files under both the directories. I've to prepare a file which will have the list of the files from both the directories listed sorted by timestamp.

Here is the case:
/home/folder1/ has

A1.txt date2
A2.txt date1
A3.txt date5


/home/folder2/ has

A4.txt date3
A5.txt date4
A6.txt date6

I've to create a file output.txt which will have the contents as

A2.txt date1
A1.txt date2
A4.txt date3
A5.txt date4
A3.txt date5
A6.txt date6

In order to achieve this i'm using ls and appending the contents onto one pre_output.txt file and sorting it on key which is the second field (date)

For sorting i'm using sort -k 1,1M pre_output.txt > output.txt.....but somehow i'm not being successful...please suggest...

Thanks in advance

Sam

Oh, fun! Bear in mind that the time stamp visible from the OS is the modify time and that it will, if greater than quite a few months, change from being hh:mm with the month and day, to being the year, month and day (just cosmetic, but WILL affect your sort if you aim to use the displayed values).

If you just have recently modified files then you should think about how you want them sorted - yyyymmddhhmmss is generally a good way, thus you may need to construct that as a sort key: by passing the ls output through awk.