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Problem comparing String using IF stmt

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# 1  
Old 04-30-2011
Problem comparing String using IF stmt
Hi frnds

Im facing an issues while trying to compare string using IF stmt, my code is:

Code:
chkMsgName=`Service Fee Detail`
 if [ $ctrlSrvcFeeMsgNm == $chkMsgName ]
     then
        if [ $ctrlSrvcFeeCnt == $cntWrdSrvcFee ]
        then 
            if [ $ctrlSrvcFeeLnItmCnt == $cntWrdSrvcFeeLnItm ]
            then
                echo "Valid File Ready for processing"
            fi
        fi
     fi

im getting the following error... Smilie

Code:
parsingIfNew.ksh[65]: [: Fee: unknown operator

Please help me in sorting out this error.... Thanks in advance...
# 2  
Old 04-30-2011
can you enclose the below variable to single or double quotes are try again...
chkMsgName=`Service Fee Detail`
# 3  
Old 04-30-2011
I tried, but no use, again the same error... Smilie
# 4  
Old 04-30-2011
Please try the following (copy it => same sequence) :

Code:
chkMsgName="Service Fee Detail"
if [ $ctrlSrvcFeeMsgNm == $chkMsgName ]
then
	if [ $ctrlSrvcFeeCnt == $cntWrdSrvcFee ]
	then
		if [ $ctrlSrvcFeeLnItmCnt == $cntWrdSrvcFeeLnItm ]
		then
			echo "Valid File Ready for processing"
		fi
	fi
fi

# 5  
Old 04-30-2011

Quote your variables:
Code:
chkMsgName="Service Fee Detail"
if [ "$ctrlSrvcFeeMsgNm" = "$chkMsgName" ]
then
   if [ "$ctrlSrvcFeeCnt" = "$cntWrdSrvcFee" ]
   then
      if [ "$ctrlSrvcFeeLnItmCnt" = "$cntWrdSrvcFeeLnItm" ]
      then
         echo "Valid File Ready for processing"
      fi
   fi
fi


Or, more concisely:
Code:
chkMsgName="Service Fee Detail"
if [ "$ctrlSrvcFeeMsgNm" = "$chkMsgName" ] &&
   [ "$ctrlSrvcFeeCnt" = "$cntWrdSrvcFee" ] &&
   [ "$ctrlSrvcFeeLnItmCnt" = "$cntWrdSrvcFeeLnItm" ]
then
   echo "Valid File Ready for processing"
fi

# 6  
Old 04-30-2011
The error is because the variables are not quoted!

Code:

if [ $ctrlSrvcFeeMsgNm == $chkMsgName ]
then
...
fi

what if $ctrlSrvcFeeMsgNm is not populated?
runtime code will looks like

Code:
if [ == $chkMsgName ] # of course its an error
then
...
fi

So if you think this variable may or may not have value, then you should put it within double quotes.

Code:

if [ "$ctrlSrvcFeeMsgNm" == "$chkMsgName" ]
then
...
fi

Now runtime code will look like

Code:

if [ "" == "some_value" ]
 then
 ...
 fi

cfajohnson code will work!

regards,
Ahamed
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