awk to print first row with forth column and last row with fifth column in each file


 
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# 1  
awk to print first row with forth column and last row with fifth column in each file

file with this content
Quote:
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Quote:
u want to print first row with fourth column and second row with fifth column; the code is below
Code:
awk 'NR==1 {print $4} && NR==2 {print $5}' file

The error is shown with syntax error; what can be done

Quote:
And another question is that if there is to print first row with fourth column and last row with fifth column; in each file; how the solution with awk will be?
# 2  
Quote:
Originally Posted by cdfd123
file with this content

Code:
PPP11 OFS HIGH 1200 1401 + 0 KNOW
PPP22 OFS HIGH 1433 1588 - 2 KNOW

u want to print first row with fourth column and second row with fifth column; the code is below
Code:
awk 'NR==1 {print $4} && NR==2 {print $5}' file

The error is shown with syntax error; what can be done

And another question is that if there is to print first row with fourth column and last row with fifth column; in each file; how the solution with awk will be?
First, please use CODE tags (not QUOTE tags) to show contents of files.

Second, we seem to have a language barrier. I do not understand what you want. Are you asking for a script that uses awk to read two lines from a file and write just column 4 from the 1st row and column 5 from the 2nd row? If this is what you want, you can get it using something like:
Code:
awk 'NR==1 {print $4}
NR==2 {print $5}' file

Are you asking for a script that reads a file and prints the 1st line that contains 4 or more columns and the 2nd line that contains 5 or more columns?

Please show us the output you want from the sample input you provide (in CODE tags) so we more clearly understand what you're trying to do.
This User Gave Thanks to Don Cragun For This Post:
# 3  
About how to print: "last row with fifth column; in each file":
Code:
END{ print $5 }

or in case you are using gawk 4.x:
Code:
ENDFILE{ print $5 }

These 2 Users Gave Thanks to user8 For This Post:
# 4  
@user8: not every awk retains the fields in the END section. To get around this:
Code:
{s=$5} END{ print s }

This User Gave Thanks to Scrutinizer For This Post:
# 5  
Quote:
Originally Posted by Scrutinizer
@user8: not every awk retains the fields in the END section.
You are right. I should have mentioned this.
 

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