A better solution is to create a new directory and modify the user's PATH. Commonly-used operating systems use a PATH environment variable. When you attempt to run some executable program by referencing its name, the command interpreter searches through the directories in the PATH looking for an executable program by that name.
Or, in the odd case of Windows, with that name plus a period and some extension, e. The first match wins — the first such program found is run, regardless of whether there happened to be any other executable programs by that name in later PATH directories.
Until the arrival of Windows 10, the Windows operating systems did not come with SSH and other useful secure networking utilities. So, you would need to add PuTTY or a commercial alternative. The problem is that you would have to either install the PuTTY binaries in a system directory, or else type long path names every time you use them. So let's say you have pulled down pscp. This is where things get a little strange. The PATH variable is an aspect of the user's environment.
It is set when the user authenticates to the operating system and a session is established. It can be modified within that session, but it is a part of the session environment and it is discarded at the end of that session. Click the Start button, then type env and select Edit the system environment variables.
The below window will appear. Select Environment Variables. Click Path in the bottom pane of the new window, and then Edit. Below is what I saw.
Oh well, I'll add another entry to the end of the list. You will notice that ". If you know the path, simply type it in or copy and paste it. If you prefer, you can also click Browse and then navigate to the desired path. To edit any path, simply select it and then click on the Edit button. You can also delete paths using the Delete button. Note that you can also move items up and down on the list. When you type a command at the command prompt, Windows has to search through each directory stored in the PATH variable to see if that executable exists or not.
If you want your executable to be found faster, just move that path up to the top of the list. This can also come in handy if you have multiple versions of the same command in different paths and need to have one run instead of the other. The one that shows up higher in the list will be run when you type in the command. Lastly, if you click on Edit text , it will load a dialog where you can edit the Path variable using the old interface where all the paths are listed in one text box.
If you want to learn more about environment variables, make sure to check out my post on how to create your own custom environment variables. Founder of Help Desk Geek and managing editor. However, you should set the path variable if you want to be able to run the executables javac , java , javadoc , and so on from any directory without having to type the full path of the command.
This will print the version of the java tool, if it can find it. If the version is old or you get the error java: Command not found , then the path is not properly set.
For ksh , the startup file is named by the environment variable, ENV. To set the path:. Then load the startup file and verify that the path is set by repeating the java command:. Classes that are part of the JRE, JDK platform, and extensions should be defined through other means, such as the bootstrap class path or the extensions directory.
The preferred way to specify the class path is by using the -cp command line switch.
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