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Problem while concatenating variables in shell script

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# 1  
Old 02-23-2011
Problem while concatenating variables in shell script
Hi folks,

I am facing problem when I concat variables with the string.

Value for 'JDBC_CLASSES' variable looks malformed (/classes12.zip2.0KAGES)

But, my expected result for 'JDBC_CLASSES' is
/opt/API-R111/PACKAGES/jdbc/ORACLE9.2.0/classes12.zip

Am I missing anything here?

My Script :
-------------
Code:
#!/bin/sh
echo "== SET ENVIRONMENT VARIABLES =="
export PACK_HOME=/opt/API-R111/PACKAGES
export JDBC_VER=ORACLE9.2.0
export JDBC_CLASSES=${PACK_HOME}/"jdbc/"${JDBC_VER}/"classes12.zip"
echo $PACK_HOME
echo $JDBC_CLASSES

jmc: added code tags
Output:
--------
[weblogic@localhost admin]$ sh setenv.sh
== SET ENVIRONMENT VARIABLES ==
/opt/API-R111/PACKAGES
/classes12.zip2.0KAGES

Any help on this is highly appreciable.

Regards,
Adhil
Last edited by jim mcnamara; 02-23-2011 at 05:19 PM.. Reason: code tags
# 2  
Old 02-23-2011
First off you realize you have to source this, not run it, right? You do that by running . filename in your shell. Actually executing it will be pointless because it will get its own, separate copy of the environment variables to fiddle with, leaving yours alone.

So remove the #! line, it won't do anything.

Next, properly quote everything.

Next, split the export and = statements since some shells throw up when you combine them.

How does this work?
Code:
echo "== SET ENVIRONMENT VARIABLES =="
PACK_HOME="/opt/API-R111/PACKAGES"
export PACK_HOME
JDBC_VER="ORACLE9.2.0"
export JDBC_VER
JDBC_CLASSES="${PACK_HOME}/jdbc/${JDBC_VER}/classes12.zip"
export JDBC_CLASSES
echo "${PACK_HOME}"
echo "${JDBC_CLASSES}"

This User Gave Thanks to Corona688 For This Post:
Adhil
# 3  
Old 02-24-2011
Maybe the script has been edited with a Microsoft editor and the strings contain spurious carriage-return characters.

Please post the output from this command which is designed to make line terminators visible:
Code:
sed -n l setenv.sh

When viewed like this a normal unix text file will have a "$" at the end of each line and no other control characters.
This User Gave Thanks to methyl For This Post:
Adhil
# 4  
Old 02-24-2011
Try splitting your export command and variable setup in different lines, what do you get with this :


Code:
echo "== SET ENVIRONMENT VARIABLES =="

PACK_HOME=/opt/API-R111/PACKAGES
export PACK_HOME

JDBC_VER=ORACLE9.2.0
export JDBC_VER

JDBC_CLASSES="${PACK_HOME}/jdbc/${JDBC_VER}/classes12.zip"
export JDBC_CLASSES

echo $PACK_HOME
echo $JDBC_CLASSES

???

Code:
env | egrep -e 'JDBC|PACK'

# 5  
Old 02-24-2011
Changing ctsgnb to Adhil:
Adhril, please follow the instructions provided by Corona688:
Quote:
First off you realize you have to source this, not run it, right? You do that by running . filename in your shell.
Quote:
Next, properly quote everything.
Last edited by Shell_Life; 02-24-2011 at 01:46 PM..
# 6  
Old 02-24-2011
@Shell Life ,

Oooops, i just realized that Corona already suggested to split the export/assignation into 2 lines.

But in fact i don't have any problem, it is not me who is asking questions about how to source environment variable : it is Adhil

Smilie
# 7  
Old 02-24-2011
ctsgnb, I am really sorry for the confusion. Smilie
I do apologize.
Smilie
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