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How to search for a word in a particular column of a file

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# 1  
Old 12-29-2010
How to search for a word in a particular column of a file
How to search for a word like "computer" in a column (eg: 4th field) of a '***' delimited file and add a column at the end of the record which denotes 'Y' if present and 'N' if not. After this, we need to again check for words like 'Dell' but not 'DellXPS' in 5th field and again add another column at the end of the record with 'Y' or 'N'. The Input text file may contain 2500 lines, so it should append the 2 new columns at the end of each line.
Please help!

so, input text file like:
Code:
0001***abcd***fghi***computer of the year***DellXPS or Toshiba or Sony

and output should be:
Code:
0001***abcd***fghi***computer of the year***DellXPS or Toshiba or Sony***Y***N


Moderator's Comments:
Mod Comment Please use code tags when posting data and code samples!
Last edited by Franklin52; 12-29-2010 at 09:24 AM..
# 2  
Old 12-29-2010
Code:
cat inputFile | tr '***' '|' | while read line
do
    forthField=`echo "$line" | cut -d"|" -f4`
    fifthField=`echo "$line" | cut -d"|" -f5`

    if `echo "$forthField" | grep -i computer` ; then
        line="${line}|Y"
    else
        line="${line}|N"
    fi

    if `echo "$fifthField" | grep -i "Dell "` ; then
        line="${line}|Y"
    else
        line="${line}|N"
    fi
    
    echo "$line" | sed -n 's/\|/***/g' >> outputFile
done

This User Gave Thanks to For This Post:
Jassz
R0H0N
# 3  
Old 12-29-2010
Try this,

Code:
awk -F"***" 'BEGIN{OFS=FS}{print $0,$4 ~ /computer/?$6="Y":$6="N",$5=="Dell"?$7="Y":$7="N"}' inputfile

# 4  
Old 12-29-2010
Code:
awk -F '***' '{print $0,$4~/computer/?"Y":"N",$5~/(^|[ \t])Dell([ \t]|$)/?"Y":"N"}' OFS='***' file

# 5  
Old 12-29-2010
Code:
awk 'BEGIN{FS=OFS="***"}{$6=($4~/computer/)?"Y":"N";$7=($5~/Dell/&&$5!~/DellXPS/)?"Y":"N"}1' file

# 6  
Old 12-30-2010
Thanks Rohon. we made the changes in tr and used awk to use the same delimiter itself. Also IF condition needed a ". Code for only the first condition was:

cat inputFile | while read line
do
forthField=`echo "$line" | awk -F "***" '{print $4}`

if [ "`echo "$forthField" | grep -i "computer"`" ] ; then
line="${line}@@@Y"
else
line="${line}@@@N"
fi

echo "$line" >> outputFile
done


It worked fine! Thanks all.
Last edited by Jassz; 12-30-2010 at 01:26 AM.. Reason: line mismatch
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