error during the execution of script

Shell Programming and Scripting
1

Hi,
I have a cron job which executes daily once 9 PM.

The script is like
if [ ${PRNTSHELL} = "OC" ]
then
TYPE=OC
elif [ ${PRNTSHELL} = "I" ]
then
TYPE=i
elif [ ${PRNTSHELL} = "MMC" ]
then
TYPE=mmc
elif [ ${PRNTSHELL} = "CB" ]
then
TYPE=CB
elif [ ${PRNTSHELL} = "OTH" ]
then
TYPE=oth
fi
SBTYPE=`echo $TYPE | tr [a-z] [A-Z]`
During the exection of the script some time (not always) I get the below message:
Usage: tr [ -cds ] [ String1 [ String2 ] ]
Usage: tr [ -cds ] [ String1 [ String2 ] ]

Can any one please help me. I am not able find out the cause. Please someone help me to esolve this issue.

2

Put the args to tr in single quotes or it mas may any two character filenames in the current directory. You shouldn't need those brackets anyway. See UNIX command to reverese lower and upper case