breaking a file based on the Key column

[bengalliboy]

Hi
What would be the best way to split a file into pieces based on the 1st column (say 8 char, fixed length), some thing like this: The text file file1 looks like this:

ABCD001 asfafggfdggfgfg
ABCD001 hjhjhjh
ABCD001 hghgh
ABCD002 hjhjhj
ABCD002 jhhj

So I want: file2
ABCD001 asfafggfdggfgfg
ABCD001 hjhjhjh
ABCD001 hghgh

and file2:
ABCD002 hjhjhj
ABCD002 jhhj
TIA

 

[CaKiwi]

See your thread822-333226 for 2 solutions CaKiwi