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Full Discussion: Setting environment variable using shell script
Top Forums Shell Programming and Scripting Setting environment variable using shell script Post 302435327 by arun_maffy on Wednesday 7th of July 2010 05:19:56 AM
Old 07-07-2010
Setting environment variable using shell script
Hi All,

I'm trying to write an menu driven program to automate some functions which involve loging to multiple hosts. The hosts can differ for every use, so I thought I would use an config file to get the hostnames. Now I need to set those values in the config file to environment variable to access by the menu script to login and proceed with the functions.

I tried to execute the config file from the shell script, but the environment variables are dying after the menu script is exited. The question is how to set those environment variable in the terminal for the complete session even after exiting the script, because if the menu gets failed in the 2nd or 3rd step and when the user tries to execute the script again it is mandating the user to run the config file inorder to set the env variables which is a pain for the user.

Please give your suggestions !!!

Thanks,
 

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LEARN ABOUT DEBIAN

tnat64

TNAT64(1)						      General Commands Manual							 TNAT64(1)

NAME

       tnat64  -  Shell  wrapper  to  simplify the use of the tnat64(8) library to transparently allow an application to connect to IPv4 hosts via
       NAT64 on IPv6-only systems when the application doesn't support IPv6 itself.

SYNOPSIS

       tnat64 [application [application's arguments]]
       or tnat64 [on|off]
       or tnat64

DESCRIPTION

       tnat64 is a wrapper between the tnat64 library and the application what you would like to run through NAT64.

OPTIONS

       [application [application's arguments]]
	      run the application as specified with the environment (LD_PRELOAD) set such that tnat64(8) will transparently  forward  all  connec-
	      tions to the NAT64 via IPv6

       [on|off]
	      this  option  adds  or  removes  tnat64(8) from the LD_PRELOAD environment variable. When tnat64(8) is in this variable all executed
	      applications are automatically NAT64-ed. If you want to use this function, you HAVE to source the  shell	script	from  yours,  like
	      this: "source /usr/bin/tnat64" or ". /usr/bin/tnat64"
	      Example:
	      ". tnat64 on" -- add the tnat64 lib to LD_PRELOAD
	      ". tnat64 off" -- remove the tnat64 lib from LD_PRELOAD

       [show|sh]
	      show the current value of the LD_PRELOAD variable

       <without any argument>
	      create a new shell with LD_PRELOAD including tnat64(8).

AUTHOR

       This  script was created by Tamas SZERB <toma@rulez.org> for the Debian package of tsocks. It (along with this manual page) have since been
       adapted into the main tsocks project and modified, and then modified to be used with tnat64.

TNAT64																	 TNAT64(1)
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