Sed and SubString


 
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# 1  
Old 08-02-2010
Sed and SubString

Hi Folks,
I am here with a simple doubt. I am having a flat file in which I want to replace the characters from say 5 to 15 as some text.
Flat file contains a single line.

For example

Code:
01MRRAJESH21000RAJESH INDUSTRIES

In the above line pos 16-21 is Rajesh, I want to search for the substring based on the position and replace that position with some other text.

Please help. Thanks in advance!!!!
# 2  
Old 08-02-2010
Use the {} to match the number of character occurence before the pattern ,

Code:
sed -r "s/^.{15}RAJESH/REPLACE/g"

# 3  
Old 08-02-2010
Quote:
Originally Posted by karthigayan
Use the {} to match the number of character occurence before the pattern ,

Code:
sed -r "s/^.{15}RAJESH/REPLACE/g"


Hi Karthi,
Thanks for your reply
I do not have any pattern in my flat file. It is just a simple text. I want to replace the text say from position 20 to 30 with my text.
Also,my shell is unable to recognize sed-r. I am using korn shell.

Last edited by dinesh1985; 08-02-2010 at 07:22 AM..
# 4  
Old 08-02-2010
Hi

Assuming ABCEFG is the string to be replaced with:

Code:
echo 01MRRAJESH21000RAJESH INDUSTRIES | sed 's/\(.\{15\}\)RAJESH\(.*\)/\1ABCEFG\2/'

Guru.
This User Gave Thanks to guruprasadpr For This Post:
# 5  
Old 08-02-2010
Try:
Code:
awk '{split(val,V,"");for(i=0;i<=p2-p1;i++)$(i+p1)=V[i+1]}1' val=newstring p1=10 p2=18 FS= OFS= infile

input:
Code:
01MRRAJESH21000RAJESH INDUSTRIES

output:
Code:
01MRRAJESnewstringESH INDUSTRIES


Last edited by Scrutinizer; 08-02-2010 at 04:33 PM..
This User Gave Thanks to Scrutinizer For This Post:
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