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Need help with grep command line filtering

Posted on 2013-06-25
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Last Modified: 2013-06-25
I have the following code to loop through lines of the file and read only the lines with characters a-z

grep "^[a-zA-Z]" $FILE1 | while read LINE
do
     

done

I also need to ensure that the code above ignores the very first line and any lines starting with dashes "-". How can accomplish that?

I know I can exclude dashes by using grep -v "^-" but how do I combine it with the existing condition and incorporate the exclusion of the first line
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Question by:YZlat
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4 Comments
 
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by:
nemws1 earned 200 total points
ID: 39275236
Just keep piping them.  The tail command will actually skip the first line, as you requested.

tail -n +2 $FILE1 | grep "^[a-zA-Z]" | grep -v "^-" | while read LINE
do

done

Open in new window

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Assisted Solution

by:woolmilkporc
woolmilkporc earned 50 total points
ID: 39275279
You're already filtering for lines starting with [a-zA-Z]. Such lines cannot start with a dash.

But anyway, how about awk?

awk 'NR>1 && /^[a-zA-Z]/ && !/^-/' $FILE1 | while read line ...
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by:YZlat
ID: 39275537
good point woolmilkporc!:)
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LVL 68

Expert Comment

by:woolmilkporc
ID: 39275745
Good enough for 50 points and an assist, as it seems.

Thx.
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