Convert lower case to uppercase and vice versa shell script

The following shell script will convert lower case letters to upper and uppercase to lower case.


bash-3.00# echo ramu |  tr  "[:lower:]" "[:upper:]"
RAMU

bash-3.00# echo RAMU |  tr  "[:upper:]" "[:lower:]"
ramu

bash-3.00#  echo RamU |  tr  "[:upper:]" "[:lower:]"
ramu

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Thanks for your patience
~Best job portal admin(I love "Transparency")