Reinitialising environment variable without restart the machine
Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
i would rather define my "reinitialise" as make my changes to take effect in all shells at once. i found that this is quite troublesome to do the logout and logout in order to make thing works. what i am looking for is just a simple shell prompt that will make any changes (i.e. creating new environment variables) to take effect, just as what the effect of after logout and login does. are there shell prompt that will do this kind of favour?
Thanks for helps.
Ok, let me see if I understand this. You have multiple shells open. You make changes to some environment variables (either changing the values or creating new variables). Then you want all of your shells to reflect the new settings. Is that right?
Short answer: To my knowledge, no, there is no single command to update all open shells at once.
1) If you changed these environment variable values in one of your shell files (~/.bashrc, ~/.bash_profile, ~/.cshrc, or whatever), then you can re-source the file. For instance:
However, that will only update the shell you execute the command in. You will have to re-source the file in every other shell you have open for the changes to take effect. Similarly, you can source the global files in the same way ("source /etc/profile").
2) If you made these changes from the command line, then there's no way to transfer them except by typing them in to the other shells.