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egrep output order

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# 1  
Old 07-25-2012
egrep output order
The order of egrep output seems to be as they occur in the file. How do I get the order as requested? For e.g.


file contents:
Code:
AAA
EEE
GGG

egrep 'GGG|AAA|EEE' file

gives
Code:
    AAA
    EEE
    GGG

instead of

Code:
    GGG
    AAA
    EEE

Last edited by Franklin52; 07-25-2012 at 04:09 PM.. Reason: Please use code tags for data and code samples, thank you
# 2  
Old 07-25-2012
grep doesn't remember past output, checks lines one at a time against the regex given.

Your request seems a bit ambiguous. What order would you want if you were given a file like this?

Code:
AAA
eee
GGG
eee
AAA

# 3  
Old 07-25-2012
You'd have to run egrep three times and make three passes through the file:

Code:
egrep 'GGG' file
egrep 'AAA' file
egrep 'EEE' file

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