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How to perform string replace in shell script?

 
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# 1  
Old 12-27-2011
How to perform string replace in shell script?
I have value like ABCDEF,BBCCDD in a shell variable, now i would like to have ABQWEF,BBQWDD in the same shell variable. How can i replace the char at position 3&4 with QW in shell script?
# 2  
Old 12-27-2011
Is that all? There're several posts on this, vel4ever.

Code:
x="ABCDEF"
x=`echo $x | sed 's/CD/QW/'`

# 3  
Old 12-27-2011
I have modified my query here. Please help me on that.
# 4  
Old 12-27-2011
Code:
$ x="ABCDEF,BBCCDD"
$ for y in `echo $x | sed 's/,/ /g'`; do echo -e "$y\c" | sed 's/\(..\)../\1QW/'; echo -e ",\c"; done | sed 's/,$//'

This User Gave Thanks to balajesuri For This Post:
vel4ever
 
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