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Replace multiple strings in a file.

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# 1  
Old 12-07-2010
Replace multiple strings in a file.
Hello Freinds,

Hope, you all are doing well.

I have to replace the static strings from one file (File 1) with the dynamic strings from the another file (File2). I've written a shell script for this.Below is the contents.
HTML Code:
 while read line
do
 field[0]=`echo $line | awk '{print $1}'`
 field[1]=`echo $line | awk '{print $2}'`
 field[2]=`echo $line | awk '{print $3}'`
  sed -e "s/Contact_FirstName/`echo ${field[0]}`/g;s/Contact_LastName/`echo ${field[1]}`/g;s/Email_ID/`echo ${field[2]}`/g" File1 > File3
done < File2
~
.

I am using both awk and sed to serve my purpose and the script is working as expected.

I just wanted to know if there is any better way to achieve this.

Please suggest!!

Thanks,
Chandan Singh
# 2  
Old 12-07-2010
Code:
cut -f1,2,3 File2 > File3

will also create the same output. please specify if your output is something else.
R0H0N
# 3  
Old 12-07-2010
Hi Rohon,

No, this is not what I wanted.

I need to search the following strings in File1 and replace them with the contents in File2 and the output will be redirected to File3, which will contain all the contents from File1 with the replaced strings.
HTML Code:
Contact_FirstName
Contact_lastName
Email_ID
The content of the File2 is
HTML Code:
Chandan Singh chandan.singh@example.com
Desired output is something like this
Code:
 #cat File3 | egrep 'chandan|singh'
                        <per:firstName>chandan</per:firstName>
                        <per:lastName>singh</per:lastName>
                        <per:email>chandan.singh@example.com</per:email>
                        <

Last edited by singh.chandan18; 12-07-2010 at 10:39 AM..
# 4  
Old 12-07-2010
Code:
<File2 read a b c
sed 's/Contact_FirstName/'"$a"'/;s/Contact_lastName/'"$b"'/;s/Email_ID/'"$c"'/' File1 >output

Code:
# cat File1
Contact_FirstName
Contact_lastName
Email_ID
# cat sampl
Chandan Singh chandan.singh@example.com
# <sampl read a b c
# sed 's/Contact_FirstName/'"$a"'/;s/Contact_lastName/'"$b"'/;s/Email_ID/'"$c"'/' File1
Chandan
Singh
chandan.singh@example.com

Last edited by ctsgnb; 12-07-2010 at 11:28 AM..
# 5  
Old 12-07-2010
not sure , if there are only 3 column in File2, if not,

Code:
while read line
do
 set -- $(echo $line|awk '{print $1,$2,$3}')
 sed -e "s/Contact_FirstName/$1/g;s/Contact_LastName/$2/g;s/Email_ID/$2/g" File1 >> File3
done < File2

# 6  
Old 12-08-2010
@rdcwayx
can you pls tell wot the below line mean..
Code:
set -- $(echo $line|awk '{print $1,$2,$3}')

# 7  
Old 12-08-2010
I m sorry Chandan..!!! I didn't understand your question properly.

You can achieve this by following command also. This will directly replace values in File1 itself.

Code:
perl -pi -e 's/Contact_FirstName/`cat File2 | cut -f1`/g;s/Contact_LastName/`cat File2 | cut -f2`/g;s/Email_ID/`cat File2 | cut -f3`/g' File1

Sorry again..!!
R0H0N
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