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Extracting regular expression

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# 1  
Old 10-22-2008
Question Extracting regular expression
Hi there,

I need to extract from a long txt file only lines like this:

20 1.0000e+00 5.4392e-02 2.4665e+02

I've looked for a way by using sed, but I couldn't find the right way...

Any help would be appreciated!!!Smilie
# 2  
Old 10-22-2008
regexp like:

Code:
[0-9]\.[0-9]\{4\}e[+-][0-9]

should work
This User Gave Thanks to Tytalus For This Post:
Giordano Bruno
# 3  
Old 10-22-2008
Thank you very much!!! This is exactly what I was looking for!!!Smilie
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