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Edit other than the first and last record of a text file

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# 1  
Old 06-24-2009
Edit other than the first and last record of a text file
Hello,

I have to add the string "YES" to the end of all records of files in a dir other than the first(header) and the last(trailer) record. viz, the first and the last record in a file has to be identified and exempted from the edit.

I tried an awk script. But there seems to be no direct way of identifying the last record.

viz,
Original File contains :

<Header>
<Record1>
<Record2>
<Trailer>

The modified file should contain :

<Header>
<Record1>YES
<Record2>YES
<Trailer>

There is no fixed pattern for the values in <Header> and <Trailer>
# 2  
Old 06-24-2009
Code:
awk '{if(NR!=1 && NR !=_last_line){print}}' _last_line="`wc -l inputfile|awk '{print $1}'`" inputfile

# 3  
Old 06-24-2009
Quote:
Originally Posted by rakeshawasthi
Code:
awk '{if(NR!=1 && NR !=_last_line){print}}' _last_line="`wc -l inputfile|awk '{print $1}'`" inputfile

rakeshawasthi, have you test the your command? It doesn't give the desired output!

rogersed, you can try this:

Code:
awk '
NR==FNR{if($0 ~ /Header/){n=NR}next}
FNR>n && !/Trailer/{print $0 "YES";next}
1' file file

Regards
# 4  
Old 06-24-2009
Quote:
Originally Posted by Franklin52
rakeshawasthi, have you test the your command? It doesn't give the desired output!

rogersed, you can try this:

Code:
awk '
NR==FNR{if($0 ~ /Header/){n=NR}next}
FNR>n && !/Trailer/{print $0 "YES";next}
1' file file

Regards
Sorry not read the requirement properly.

Code:
awk '{if(NR != 1 && NR !=_last_line){print $0" YES"}else {print}}' _last_line="`wc -l inputfile | awk '{print $1}'`" inputfile

# 5  
Old 06-24-2009
Code:
function append_content
{
file=$1
sed -n '1{
        p
        }
        1 !{
        ${
        p
        }
        $!{
        s/$/YES/
        p
        }
}' $file > ${file}.bak
mv $file.bak $file
}
for i in *.txt;do
append_content $i
done

# 6  
Old 06-24-2009
Quote:
Originally Posted by rakeshawasthi
Sorry not read the requirement properly.

Code:
awk '{if(NR != 1 && NR !=_last_line){print $0" YES"}else {print}}' _last_line="`wc -l inputfile | awk '{print $1}'`" inputfile

rakeshawasthi,

Please test your command before you post it, it doesn't work as desired.

Regards
# 7  
Old 06-24-2009
Try...
Code:
sed '1n;$q;s/$/YES/' file1
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