Unix setup environment variables

Shell Programming and Scripting. Setting up Environment Variables. Registered User. Join Date: Jun Hi all, I am trying to set up some variables in a shell script. The variables contain values of various paths needed to run a java module. The problem is the variables dont seem to be setting at all. Where as if i do the same from unix prompt after executing the script, the variable is always empty.

Any help or pointers are appreciated. Join Date: Feb Two ways to go about setting env variables. If you need the variables only within the context of the script you are running, then this would work,.

Both invoke the env shell script you have. If you want to retain those exported variables beyond the shell context i. Join Date: May I have a similar problem, however I want to manage all variables in a single file and as such run this file at the beginning of all scripts requiring that environment variables.

Originally Posted by jhansrod. The sc1 script is located in the same dir as script2. Its name is sc1 and not. Apologies, I misread your message. It works great, however the variables remain constant. I have a variable for date and time which I need it to be set at execution time of the line using the var.

Setting environment variables from a file :. Hi, I have around 10 environment variables in my shell script. How can i do that? Sign In Register. Sign Out Sign In Register. Latest Insider. Check out the latest Insider stories here. More from the IDG Network. Basic scripting on Unix and Linux. The Linux command-line cheat sheet. Join the Network World communities on Facebook and LinkedIn to comment on topics that are top of mind.

Following is the partial list of important environment variables. Indicates the home directory of the current user: the default argument for the cd built-in command. Indicates the Internal Field Separator that is used by the parser for word splitting after expansion. A Unix system with a dynamic linker, contains a colonseparated list of directories that the dynamic linker should search for shared objects when building a process image after exec, before searching in any other directories.

Indicates the search path for commands. It is a colon-separated list of directories in which the shell looks for commands. Increments by one each time an instance of bash is started. This variable is useful for determining whether the built-in exit command ends the current session. Eduonix Learning Solutions. Frahaan Hussain. Pradeep D.

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