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How to change Case of a string(BASH Scripting)?

 
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# 1  
Old 07-09-2010
How to change Case of a string(BASH Scripting)?
Is there any inbuilt functionality in Unix shell script so that i can able to convert lower case string input to an upper case?

I dont want to use high level languages like java,python or perl for doing the job.
# 2  
Old 07-09-2010
Code:
print "${L_STRING}" | sed y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/


or

Code:
bash-2.05b$ echo "amit" |tr "[:lower:]" "[:upper:]" 
AMIT

This User Gave Thanks to amitranjansahu For This Post:
pinga123
# 3  
Old 07-09-2010
awk '{ print toupper($0) }' file.txt
 
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