setenv in script


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting setenv in script
# 1  
Old 01-09-2005
setenv in script

Is it possible to set environement variable in a script (for example, perl script) so that the variable will be set after exiting the script - in a father shell.
# 2  
Old 01-09-2005
No, once the shell that is running your script is ended, so is its environment. However, you could use a common environment file that is sourced before execution of each script. Where I work, all applications run under the application ID, when the sceduler runs, it does so as root and is able to 'su' to the application ID. We have setup the .profile of each application to export a base set of environment variables. So, when root issues the 'su' to the application ID then that base set of variables are set within the shell and are persistent for the duration of the cycle.
# 3  
Old 01-12-2005
It need not be .profile always .....


Quote:
Is it possible to set environement variable in a script (for example, perl script) so that the variable will be set after exiting the script - in a father shell.

See the following .....

$ cat x.sh

export a="hello"
export b="world"
$
$
$ unset a ; unset b
$ ./x.sh
$ echo $a $b

$ cp x.sh setup
$ ./setup
$ echo $a $b

$ . ./setup
$ echo $a $b
hello world
$ unset a ; unset b
$ . ./x.sh
$ echo $a $b
hello world
$ unset a ; unset b
$ echo $a $b

$ . ./x.sh
$ echo $a $b
hello world
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Cshell setenv: Too many arguments.

i have in c-shell set value_str ="one three" set line_seprator = "," set value_and_sperator = "$value_str$line_seprator" setenv STRING_CONCAT $STRING_CONCAT$value_and_sperator and im getting error: setenv: Too many arguments. this is... (1 Reply)
Discussion started by: umen
1 Replies

2. UNIX for Advanced & Expert Users

setenv.

helllo every body .. hope you are having good time programming in unix . here is a little problem faced me : setenv("myvar","bla bla",1); system("myvar=$(grep....)); printf("%s\n", getenv("myvar")); will print : bla bla .. how can i get the value of grep into my program ? ... (7 Replies)
Discussion started by: max_475
7 Replies

3. UNIX for Dummies Questions & Answers

whats setenv in unix

Hi whats the setenv command in unix..?? i have set the oracle_home path as aa.ii.1 in kron_settings and mentioned setenv oracle_path as aa.ii.2 in user settings. Does this make any changes made to the path name of the oracle_home when i run a scripts in unix..???:( (1 Reply)
Discussion started by: abhi_123
1 Replies

4. Shell Programming and Scripting

setenv error

I am having the following environment setup script. $cat dbenv.sh #! /bin/csh # set history=32 stty sane setenv ORACLE_HOME=/dboracle/orabase/product/10.1.0.3 set ORACLE_BASE=/dboracle/orabase set... (2 Replies)
Discussion started by: rahulrathod
2 Replies

5. UNIX for Dummies Questions & Answers

difference between EXPORT and setenv

Hi, Is there any difference between setting an environment variable by EXPORT and by setenv? (3 Replies)
Discussion started by: dexkid
3 Replies

6. Programming

setenv function in C programming

Hi I have a problem with setenv function in C. I'm calling an .exe of a c program from my shell script. Now, I have to pass a value from the .exe to my shell script. So i have exported an variable in my script. And in the C program I'm setting the variable as setenv("REC_CNT",rec_cnt,1); ... (7 Replies)
Discussion started by: janemary.a
7 Replies

7. UNIX for Dummies Questions & Answers

Difference between SET and SETENV

I never undestood exactly what's the difference between the SET and SETENV commands. One sets variables visible to all users and the other (SETENV) only to the specific user environment ? Thanks in advance, BraZil - thE heLL iS HEre :mad: !!! (2 Replies)
Discussion started by: 435 Gavea
2 Replies

8. Shell Programming and Scripting

What 's setenv?

Hi Is someone know about "setenv"? where can i find out this one? Regards Myoe (2 Replies)
Discussion started by: myoeminn
2 Replies

9. UNIX for Dummies Questions & Answers

set, setenv

Well first of all I am a real Unix newbie. I am taking a course on it in University. I kind of understand set and setenv but, I think it si something that I should really understand. So I thought that I would try a forum out and see how good you guys really are. The question: Execute the... (1 Reply)
Discussion started by: w6u6f
1 Replies

10. UNIX for Dummies Questions & Answers

setenv Question

I want to add paths to a CLASSPATH variable but if I use the : setenv CLASSPATH /opt all previous entries are erased. How do I append additional entries to a system variable without overwriting the original value. Thanx (3 Replies)
Discussion started by: ianf
3 Replies
Login or Register to Ask a Question