Using GREP/AWK to extract a number and store it as a variable

modey3 · #1 (**permalink**) 03-06-2009

Hello,

I have a question regarding the awk command. Here is the line I need to grep:

1 F= -.13250138E+03 E0= -.13249556E+03 d E =-.174650E-01 mag= 35.2157

Instead of displaying the number in red I would like to store it as a variable such as X. Is there a way to do this? Thanks for any help.

modey3

Ygor · #2 (**permalink**) 03-06-2009

Try...

Code:

eval $(echo '1 F= -.13250138E+03 E0= blah ' | awk '{print $2 $3}')

Variable is $F

modey3 · #3 (**permalink**) 03-06-2009

Ygor,

Thanks the command worked! Your solution works because fortunately 'F=' precedes '-.13250138E+03'. Is it possible to define '-.13250138E+03' in terms of a variable even if 'F=' didn't precede it? Thanks

modey3

modey3 · #4 (**permalink**) 03-06-2009

Never mind, I figured it out...

eval $(echo '1 F= -.13250138E+03 E0= blah ' | awk '{print "X=" $3}')

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