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Importing variables into Unix Shell Script

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Importing variables into Unix Shell Script UNIX Help forum discussing the Unix Operating System and all variants including Irix, Solarix, and AIX. Unix was designed as a true multi-user operating system.

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  #1  
Old July 5th, 2006, 09:19 AM
scooterp83 scooterp83 is offline
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Importing variables into Unix Shell Script
Hello, I was wondering if there was a way to import my variables into a Unix Shell script instead of having to hard code them into the .sh file. Here is part of the original shell script....

Code:
PROG_NAME=com.cvs.backend.ccauth.CCAuth
PROG_ARG=/cvsweb/batch/uat/holdprops/prop
ERR_LOG=ccauth
DATE=`date +%m%d`

echo "Starting CCAuth process ... "

JAVA_ARGS=" -Xmaxjitcodesize30000000 -DLOGPROPFILE=$LOGPROPFILE -DHoldPropsHostAndPort0=suncdcd2:1505"

 if [[ -f ${JAVA_HOME}/bin/java ]]; then
	echo "We have java installed!"
        ! ${JAVA_HOME}/bin/java -classpath $CLASSPATH $JAVA_ARGS $PROG_NAME
	if [[ $? -eq 1 ]]; then
		echo "Java program $PROG_NAME executed successfully!"
		return 0
	else.............



This script is used on many different enviornments and we would like to only use one script. However, the variable:

Quote:
PROG_NAME=com.cvs.backend.ccauth.CCAuth


Changes for each enviornment. therefore it would be easier if we had a properties file that stored all of these variables and we could change the properties file without having to touch the shell script. Is there a way to import the properties file and then used the variables dynamically so we dont have to have 5 different shell scripts?

Thanks
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  #2  
Old July 5th, 2006, 09:42 AM
vlsimpson vlsimpson is offline
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source the variable file at the top of your script.

Bash Code:
Original - Bash Code 
  1. #!/bin/sh 
  2. . variable-config file # That's a period there, source builtin is same thing: source variable-file
  3. the rest of your code
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  #3  
Old July 5th, 2006, 09:50 AM
scooterp83 scooterp83 is offline
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So basically if my properties file is variables.prop all i have to do is the following:


Code:
#!/bin/sh
. variables.prop

echo "Starting CCAuth process ... "

JAVA_ARGS=" -Xmaxjitcodesize30000000 -DLOGPROPFILE=$LOGPROPFILE -DHoldPropsHostAndPort0=suncdcd2:1505"

 if [[ -f ${JAVA_HOME}/bin/java ]]; then
	echo "We have java installed!"
        ! ${JAVA_HOME}/bin/java -classpath $CLASSPATH $JAVA_ARGS $PROG_NAME
	if [[ $? -eq 1 ]]; then
		echo "Java program $PROG_NAME executed successfully!"
		return 0
	else.............



And i can take out the following variables because they are already defined in the variable.prop file?

Quote:
PROG_NAME=com.cvs.backend.ccauth.CCAuth
PROG_ARG=/cvsweb/batch/uat/holdprops/prop
ERR_LOG=ccauth
DATE=`date +%m%d`
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  #4  
Old July 5th, 2006, 10:08 AM
vlsimpson vlsimpson is offline
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Yep.
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  #5  
Old July 5th, 2006, 10:09 AM
scooterp83 scooterp83 is offline
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thanks alot i appreciate it
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  #6  
Old July 5th, 2006, 11:11 AM
scooterp83 scooterp83 is offline
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I just tried a simple script to see if this works. in the current directory i have 2 files. sh-test.sh and variable-config.prop.

sh-test.sh
Code:
#!/usr/bin/ksh
. variable-config.prop
echo $ERR_LOG


variable-config.prop
Code:
ERR_LOG=ccauth


When i run the following command: sh sh-test.sh I GET THE FOLLOWING:

Quote:
bash-2.03$ sh sh-test.sh
sh-test.sh: variable-config.prop^M: not found
bash-2.03$


However, here is my directory listing:

Quote:

bash-2.03$ ls
variable-config.prop sh-test.sh


Any ideas?

thanks
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  #7  
Old July 5th, 2006, 11:36 AM
vlsimpson vlsimpson is offline
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It looks like you got a Ctrl-M character tacked on to the file name somehow.

Rename it (use the tab key to complete out the first arg and then type the full name again)

Code:
mv variable-config.prop^M variable-config.prop
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  #8  
Old July 5th, 2006, 12:37 PM
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Ehlanna Ehlanna is offline
Not a clue what to put ...
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Sounds more like the script was edited in a Windows environment, then copied to Unix - a dos2unix inputfile > outputfile will sort that out.
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Old July 5th, 2006, 01:02 PM
vlsimpson vlsimpson is offline
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Your right, could be a ctrl-m on the end of the line in his script, but either way will futz it up.
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