Off Topic: Unix shell problem

From: Viraj Luthra <viraj999_at_lycos.com>
Date: Thu, 26 Apr 2001 00:25:15 -0700
Message-ID: <F001.002F293F.20010425232050@fatcity.com>

Hello all,

Ihave the following script, called as tst. When the script is executed as,

tst, then every thing is okay, but when it is executed as . tst, then I get the error:-

 sh: SHLIB_PATH: Parameter not set.

I need to use the following format that is . .profile, as in above case as . tst

The reason why I am doing above is because the SHLIB_PATH is not set properly, I get heaps of problems. If the SHLIB_PATH is not set, I just want to set it to say $HOME.

Please reply as this is urgent.

Thanks and Regards,

Raja

---

The script follows:-

#!/bin/sh                                                              
#                                                                      
echo                                                                   
echo                                                                   
echo Start Test                                                        
echo                                                                   
echo uname -a = `uname -a`                                             
echo First check what happens if you try and set SHLIB_PATH            
echo and there is no initial setting                                   
unset SHLIB_PATH                                                       
echo First what is its value?                                          
echo SHLIB_PATH = $SHLIB_PATH                                          
echo Now lets set it to default:123                                    
SHLIB_PATH="$SHLIB_PATH:123"                                           
echo OK what is the value now?                                         
echo SHLIB_PATH = $SHLIB_PATH                                          
echo                                                                   
echo Now lets reset the value to nothing                               
unset SHLIB_PATH                                                       
echo Check value                                                       
echo SHLIB_PATH = $SHLIB_PATH                                          
echo Now do what is in our script....                                  
if [ -z "${SHLIB_PATH}" ]; then                                        
   echo It has no current default value          
   SHLIB_PATH="${HOME}"                          
else                                             
    echo It has a default path of $SHLIB_PATH    
    SHLIB_PATH="${HOME}:${SHLIB_PATH}"           
fi                                               
    echo So what is our final result?            
    echo SHLIB_PATH = $SHLIB_PATH                

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Author: Viraj Luthra
  INET: viraj999_at_lycos.com

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