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Top Forums Shell Programming and Scripting Source environment variable in script Post 302539906 by gofortime on Tuesday 19th of July 2011 05:22:41 AM
Old 07-19-2011
Source environment variable in script

Hi,

I construct a bash script to finish some tasks. One of the task is to set up some environment variables. There is already one script file to complete the environment variables setting work. I am not able to know the detail of how to set these variables. So, I may just need to call this script in my script file.

Assume that my script file is myscript.sh, and another script file is setvar.sh. I start a terminator and run my script. So, the process tree will be like this:
init-login-bash-myscript.sh-setvar.sh
Here is the difficulty: I want these variables to be available in my working shell. But it seems that when I run my script, a child shell will be created, and these variables (set in the setvar.sh) are only available for this child shell.

So, what can I do in my script to let these variables become available for the whole working shell, other than the child shell that is created to run my script.
 

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script(1)						      General Commands Manual							 script(1)

NAME
script - Makes a transcript of terminal session SYNOPSIS
script [-a] [file] The script command makes a transcript of everything printed on your terminal. OPTIONS
Appends the transcript to file rather than writing it to file. OPERANDS
The name of an output file that will contain the transcript of the session. If this parameter is omitted, the file typescript is written. DESCRIPTION
The transcript is written to file, or appended to file if the -a option is given. If no file name is given, the transcript is saved in the file typescript. The script ends when the forked shell exits. This program is useful when you are using a CRT and want a hard-copy record of the dialog (for example, a technical writer might create an example of a working session this way). If you specify the -a option and the file does not exist, it is created. If you do not specify the -a option and the file exists, it is replaced. RESTRICTIONS
The script command requires a streams based terminal. In single user mode, streams may not be enabled. Under these circumstances, script will exit with no action. If you are the superuser and need to run this command in single user mode, use the following special instruc- tions. Enabling Streams If it is necessary to enable a streams environment in the single user mode, enter the command /sbin/init.d/streams. This command is avail- able to the superuser only. SEE ALSO
Commands: autopush(8), cat(1), echo(1), strsetup(8), tee(1) System Administration script(1)
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