Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

What is wrong with this script

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting What is wrong with this script
# 1  
Old 09-07-2011
What is wrong with this script
Good day all
I have a UNIX script that I created to set a couple of environment variables for my Oracle installation.

When I initially run the script, I get the correct values on the inbuilt echo command but when the script completes and I issue an echo statement

echo $ORACLE_SID, the system returns the previous SID. Am i missing something here. I am very new to Linux so please let me know if I need to clarify any details

Code:
 
clear
echo "Updating environment variables"
ORACLE_SID=ORCLNEW
export ORACLE_SID
echo "ORACLE SID IS" $ORACLE_SID
ORACLE_BASE=/home/oracle/app/oracle
export ORACLE_BASE
echo "ORACLE BASE IS" $ORACLE_BASE
ORACLE_HOME=/home/oracle/app/oracle/product/11.2.0/dbhome_2
export ORACLE_HOME
echo "ORACLE HOME IS" $ORACLE_HOME
PATH=/home/oracle/app/oracle/product/11.2.0/dbhome_2/bin
export PATH
echo "PATH IS" $PATH
LD_LIBRARY_PATH=/home/oracle/app/oracle/product/11.2.0/dbhome_2/lib
export LD_LIBRARY_PATH
echo "LIBRARY PATH IS" $LD_LIBRARY_PATH
echo "Completed"

# 2  
Old 09-07-2011
Quote:
A script may not export variables back to its parent process, the shell, or to the environment. Just as we learned in biology, a child process can inherit from a parent, but not vice versa.
Gotchas
# 3  
Old 09-07-2011
Yazu
How does this interpret in English - I am very new to UNIX

---------- Post updated at 09:42 AM ---------- Previous update was at 09:23 AM ----------

So are you confirming I am unable to update variables using a shell script? Otherwise this means I have to update everyone of these variables eveytime I restart my Unix box.
# 4  
Old 09-07-2011
You just need to add your settings in your ~/.profile file.
# 5  
Old 09-07-2011
I plead for patience on this. In an attempt to run with your suggestion, I have attempted to update the .profile file which to my understanding should be in the home directory
Please see below

Code:
[oracle@localhost ~]$ pwd
/home/oracle
[oracle@localhost ~]$ ls
apex             fix.sql               orapworcl           reset.log           StartHere2010.htm
apexlistener.sh  jdeveloper            orapworclone        reset_OE.sql        start_timesten
app              listener              otn_logo_small.gif  reset_sqldev        startup
dav              oracle                otn_new.css         reset_xdbPorts.sql  status
Desktop          oracle_db11g_clr.gif  repos               reset_xmldb         stop_timesten
emshutdown       oraclonepwd           reset_apex          shrink.sh           svn_repo
emstartup        oradiag_oracle        reset_imdbcache     shutdown            tmp
[oracle@localhost ~]$ cd /home
[oracle@localhost home]$ ls
davfs2  lost+found  oracle

I am not seeing the .profile file in the user - oracle folder. I must add that I am using a Linux Virtual PC.

Any ideas?
# 6  
Old 09-07-2011
Code:
 
cd 
ls -la

# 7  
Old 09-07-2011
If you want it to be available in the current shell, you should source it like this . ./myscript. It is better to put it in .profile if it is required by apps/scripts.

--ahamed
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Why result is wrong here ? whether break statement is wrong ?

Hi ! all I am just trying to check range in my datafile pls tell me why its resulting wrong admin@IEEE:~/Desktop$ cat test.txt 0 28.4 5 28.4 10 28.4 15 28.5 20 28.5 25 28.6 30 28.6 35 28.7 40 28.7 45 28.7 50 28.8 55 28.8 60 28.8 65 28.1... (2 Replies)
Discussion started by: Akshay Hegde
2 Replies

2. Shell Programming and Scripting

What is wrong with my script?

Dear All The following is part of my script: echo ${myarray} mytitle=`awk '{print substr(${myarray}, 0, length(${myarray})-4)}' /dev/null` the echo ${myarray} works fine; however, I keep getting following error for the mytitle=.. part: awk: line 1: syntax error at or near { awk: line... (3 Replies)
Discussion started by: littlewenwen
3 Replies

3. Shell Programming and Scripting

Can anyone tell me what's wrong with my script

Hi... I am fed up in file handing with array for comparing.... 1st I want save first 2 columns of file 1 I tried like this,, {getline< "file1";ln=$1; lt=$2}then I read second file's 1st and 2nd column..and saved like this and small calculation and initialization var1 =$1 var2 =$2... (5 Replies)
Discussion started by: Akshay Hegde
5 Replies

4. UNIX for Dummies Questions & Answers

What's wrong on this script?

I get this error on these lines when i run this script:"for i in /home;do file2=`ls -s $i` if ;then ls - s $i fi done (7 Replies)
Discussion started by: kotsos13
7 Replies

5. Shell Programming and Scripting

Script Gone Wrong

Hello all, so this is a script i did for an assignement, - first option greets the user according to the time after fetching his name - second options isn't implemented - third check the performance according to how many users are using the system - creates a log of names, time and ip of the... (14 Replies)
Discussion started by: ibzee33
14 Replies

6. Shell Programming and Scripting

what is wrong with this script?

Hi I've made a short script but it is not working. Can some pl. help me out in this? ./123.sh #! /usr/bin/ksh # for changing to this directory cd /layered/relational/scripts When I run the above scripts, it doesn't change to the above directory. I don't what is the problem? the... (2 Replies)
Discussion started by: Mike1234
2 Replies

7. UNIX for Dummies Questions & Answers

what is wrong with this script?

Hi, I have this example script which gives error ": unexpected operator/operand". I need the '' brackets for operator precedence. #!/bin/ksh x="abc" y="xyz" z="123" if -a then print "yes" else print "no" fi Thanks (2 Replies)
Discussion started by: rs1969
2 Replies

8. Shell Programming and Scripting

What's wrong with this script

I am trying to create a script but it is giving me errors on Cygwin for the following script. Could someone tell me, what am I doing wrong? choice=1000 echo "choice is $choice" while ; do echo "choice is $choice" echo 'Please select your option:' echo '1. Option 1' echo '2. Option 2'... (3 Replies)
Discussion started by: amitg1980
3 Replies

9. Shell Programming and Scripting

What is wrong with this script?

I keep getting errors messages for the "else" statement at line 81? #!/bin/ksh ######### Environment Setup ######### PATH=/gers/nurev/menu/pub/sbin:/gers/nurev/menu/pub/bin:/gers/nurev/menu/pub/mac :/gers/nurev/menu/adm/sbin:/gers/nurev/menu/adm/bin:/gers/nurev/menu/adm/mac:/ge... (8 Replies)
Discussion started by: heprox
8 Replies

10. UNIX for Dummies Questions & Answers

What is wrong with my script?

Hey guys, can someone help me with this script... #!/bin/sh dir=`pwd` for i in *.f do if then M=`wc -l < ${i} sed -e 's://.*::' < ${i} | \ (echo "//${i} -"$M ; cat - ) > $i.tmp chmod 700 $i ; mv ${i}.tmp $i ... (6 Replies)
Discussion started by: Lem2003
6 Replies
Login or Register to Ask a Question