export call in bash script
 

Hi,

ii wrote the following simple bash script, that should exort a sinple environment variable:
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#!/bin/bash
export http_proxy=http://14.15.16.17
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I made a chmod +x, but when i executed it, nothing happend. It does not set the path correctly!

does anyone know this probblem?

thanx for any help.

hmmm...well what are you trying to do exactly? If you do:

export http_proxy=http://14.15.16.17
echo $http_proxy

you should get:

http://14.15.16.17

of course that is temporary. If you want http_proxy to be perminentaly set to http://14.15.16.17 then you should add those lines to your .bashrc file.

Yes, because the "export" you do inside the script, only lives during the execution of the "bash" session.

so don't use any interpreter at all, no shebang line.

Thanks for your answers. But this is not what i mean. I do not want to set it permanently. When i log in my bash and make a "echo $http_proxy" i get nothing. (no entry) Thats OK, because no proxy was set at the beginning of the session. Now i execute the script i worte obove. But still the proxy was not set. Why? Do i have to put any other command in the script? I don't need it in the .bashrc - So why does it not work in my own script?

that's what i meant. the call to use bash invokes a new login session, as oposed to not having any reference to an interpreter, which will use the current environment.

Type this instead

source myscript

problem solved (for that shell). You probably want to stick it in your /etc/profile script though

The standard way to run a script in the current shell process is to run it with a . in front of the script.

Ex.

. set_ip

This would ofcourse have the same effect as running 'source set_ip' as mentioned before.

How about this. Instead of writing a script for it you just make an alias for the export command. Add the following to your /etc/bashrc file:

alias proxy='export http_proxy=http://14.15.16.17 '

Now you can just type:

proxy

and the http_proxy variable will be set for you.

Thanks again! mhearn, i've tested it with the "source" command and it works. Great! Crashed_Again, i think your method works, too.

I know this is an ancient thread, but I've had the exact same issues when trying to use export http_proxy in a bash script.

My solution, use 'declare -x' instead of 'export'