I am going to try this one last time at the risk of being flogged or drawn and quartered, only because the previous suggestions never worked - Here is what I am trying to do, I have 2 colon delimited "/etc/passwd" like files with a unique key at the beginning of each line on each one, the second file is a subset of the first or master file, i need all of the files from the subset matched up with the same keys in the master file and the rest of the master listing concatenated onto the end of the subset keys listing, see below:

File 1 - master list

key1 other stuff
key2 other stuff
key3 other stuff
...

File 2 - subset listing

key1 more stuff
key3 more stuff
...

Desired result: File3 - final listing - subset listing with matching k
+eys from master listing concatenated at end

key1 more stuff other stuff
key3 more stuff other stuff
[download]

Thanks in advance

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