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Posted by / 19-Oct-2019 15:13

Updating path variable

If you wanted to set PATH for all users of a system, there are better ways to do so, which we cover further on in this guide. These run when you login via the console, or log in using ssh.

In contrast, once you are logged in, and you open a command shell or run the bash command, the bashrc file will run.

There is considerable flexibility and multiple options for setting the PATH permanently system-wide.

Your Linux system will execute all script files ending in. In this file, we can export the PATH variable, setting it permanently to our choice of path directories, for example: You can set the PATH for only a certain user, for all users, or for only certain types of command shells.

For login shells, they use the analogous shell profile files zprofile and kprofile.

The variable stores a list of directories where applications (most commonly, your shell) should look for a program whenever you run it as a command.

Imagine trying to run the ssh command, for example, to connect to a server.

What happens if the system cannot find the ssh program?

You might recognize this as a Java Development Kit installation. You do this with the command: We can do this now from any directory, because the PATH has been updated to look for executable programs in our new directory.

Now runs the correct javac program, printing out something like the following: Java Compiler, version 1.

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There are plenty of other shells you can use, such as the C Shell and the tcsh shell.