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Help with replace specific column command

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# 1  
Old 07-03-2013
Help with replace specific column command
Input file:
Code:
ASD_QAW 12 A_@
AE_AQ 21 PA_123
ASDA_@ 23 ADA_AS
.
.

Output file:
Code:
ASD_QAW 12 A @
AE_AQ 21 PA 123
ASDA_@ 23 ADA AS
.
.

Do anybody know how to just specific and replace "_" in column 3 with tab delimiter (\t)?

Thanks for advice.
# 2  
Old 07-03-2013
try..
Code:
 
awk '{gsub("_"," ",$3)}1'  filename

This User Gave Thanks to vidyadhar85 For This Post:
perl_beginner
# 3  
Old 07-03-2013
Code:
sed 's/\(.*\)_/\1 /' file

This User Gave Thanks to balajesuri For This Post:
perl_beginner
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