shell script to search and replace a line

[kenray]

Hi all

im having trouble starting with a shell script, i hope someone here can help me

i have 2 files

file1:

404905.jpg 516167
404906.jpg 516168
404917.psd 516183
404947.pdf 516250

file2:

516250 /tmp/RecyclePoster18241.pdf
516167 /tmp/ReunionCardFINAL.jpg
516168 /tmp/MPP-3013594-05012009/ReunionBack.jpg
516183 /tmp/Stamp8x5.psd

my output woulbe like:

516167 /tmp/ReunionCardFINAL.jpg
516168 /tmp/MPP-3013594-05012009/ReunionBack.jpg
516183 /tmp/Stamp8x5.psd
516250 /tmp/RecyclePoster18241.pdf

note that file1 and file2 is not in particular order it could be
516183 404917.psd
404947.pdf 516250

and so on... although numbers 516183 and 404947 are unique which can be use as an identifier for the output

thanks in advance

[burschik]

If the order of fields were fixed, you could use "join".

[kenray]

thanks for the reply,

yes it could, thanks for that.. but how can i fix the order fields in that case