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Help: deletion of record

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# 22  
Old 03-15-2007
Tools how to write the modified value into file (again that position from where i picked)
Quote:
Originally Posted by murtaza
Thank u very much for solving my problem. Can u tell me the concept of IFS and what is the order of running this command? I have read about the pipe line symbor. This type of command start processing from left to right but here the sequence is not followed. Please tell me about this concept and IFS.
Thanks and best regards,
thank u very much for the reply. Now i was trying to modify the record. I can access the specific field to modify according to ur told method but how can i write again the modified value into the file at that position from where i got?

thank once again.
# 23  
Old 03-15-2007
Its available in code posted by anbu23,

Quote:
grep -i "saira" file | while IFS="|" read name no cntry
do
echo $name $cntry
done
modify the above to,

Code:
grep -i "saira" file | while IFS="|" read name no cntry
do
   echo $name $modified_no $cntry
done > newfile

# 24  
Old 03-15-2007
Quote:
Originally Posted by murtaza
Following is the data of my Addressbook

NAME | TELEFONE | ADDRESS
---- | -------- | -------
Shujata | 222222 | India
Selina | 555555 | Germany
Saira | 999999 | Spain
Jamil | 777777 | Spain
sujata | 069456789 | tyuiio

If i use the grep command for search the name Saira then it show me the whole line including
Saira | T 999999 | Spain

But i want to disply only name of Saira and its Telefone number and not its address. Can u help me without using awk,sed,perl
Or (if the matched patterns are unique):

Code:
{ IFS="|" read a b c;echo "$a $b"; }< <(grep Saira Addressbook)

And if your shell does not support process substitution:

Code:
grep Saira Addressbook|{ IFS="|"  read a b c;echo "$a $b"; }

Corrected.
Last edited by radoulov; 03-15-2007 at 03:30 PM..
# 25  
Old 03-15-2007
Quote:
Originally Posted by murtaza
thank u very much for the reply. Now i was trying to modify the record. I can access the specific field to modify according to ur told method but how can i write again the modified value into the file at that position from where i got?

thank once again.
Code:
while IFS="|" read name no cntry
do
if [[ ${name% *} = "Saira" ]]; then
	echo ${name}"|${modified_no}|"${cntry}
else
	echo ${name}"|${no}|"${cntry}
fi
done < file > tmp
mv tmp file
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