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How to read only text from a big data?

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I have a huge data file (.txt) with some text and numeric data. It is organized as follows:
Text1 ....
Numeric data (m1xn1)
Numeric data (m2xn2)
Numeric Data (m3xn3).....
so on...
I just want to read the data file and display Text1, Text2, Text3 etc . on the command window. How can do that? I tried the following code which read only the first line. Is it possible to modify the code to read all the text line by line? All these text has 'Scan' in it. So may be by searching for lines with 'Scan' and display in the command window. I dont know how to code this.
file = 'C:\Users\Documents\21072016_Exp_A.txt';
[fid, message] = fopen(file,'rt');
tline = fgets(fid);
  2 Commenti
per isakson
per isakson il 18 Set 2017
Modificato: per isakson il 18 Set 2017
How large is the file compared to the primary memory?
aneps il 18 Set 2017
around 500MB

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Walter Roberson
Walter Roberson il 18 Set 2017
S = fileread(file);
S = regexp(S, '^\s*[+0123456789-].*$','match','lineanchors', 'dotexceptnewline') ;
fprintf('%s\n', S{:}) ;
  5 Commenti
aneps il 18 Set 2017
Thank you.. This worked.. Yes, I also want to keep the numeric data. But the texts in the data file has important information. I need to know those when I process several data files. That is why I just want to display those in the command window.
Walter Roberson
Walter Roberson il 19 Set 2017
In my code put an ^ right after the [

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