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Asked: 2024-09-24T23:45:34+05:30 In:

What is the method to display all environment variable names along with their current values in a Linux terminal?

Hey folks, I’ve been tinkering around with my Linux system a lot lately, and I came across something that got me scratching my head. I know this might be a simple question for some of you pros out there, but I’m really trying to wrap my head around how to display all environment variable names along with their current values right from the terminal.

So, here’s the deal: I’ve got this terminal open, and I want to see what’s going on with my environment variables. You know, things like PATH, USER, and all those other variables that kind of run the show behind the scenes. I feel like it’s important to know what’s currently defined in my environment, especially since I’ve been experimenting with different setups and configurations.

In my prior experience, I’ve tried a few commands, but honestly, I’m not entirely sure if I’m getting the full picture or just scratching the surface. I mean, it seems like there should be a straightforward way to print all this information out without going through each variable one by one.

I’ve seen some commands used for listing out variables, but what if I want to do it in a neat format, maybe even with some sort of visual separation? It’s super important for me to not only see the variable names but their corresponding values as well. I think it’ll help me understand better what everything does and maybe help troubleshoot some of the issues I’ve been running into.

So, before I dive deeper into the manual pages, I thought I’d turn to you all. What’s the best method you use to pull up this information? Is there a one-liner command that does the trick, or do you typically use a script or something more complex to get this displayed nicely? Any tips or command-line magic you can share would be a huge help! Thanks in advance, you tech wizards!

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    2 Answers






    1. Environment Variables in Linux


      If you want to see all your environment variables in the terminal, there’s a super simple way to do it! You can just run this one-liner:

      printenv

      This command will list all the environment variables along with their values. It’s pretty neat since it does exactly what you’re looking for without any fuss!

      If you’re looking for something a bit fancier, another option is:

      env

      And if you want to see them sorted nicely or in a more visual format, you could do:

      printenv | sort

      This will give you the variables in alphabetical order. It might be easier to navigate through the list that way, especially if you have a lot of variables defined!

      As a bonus, if you want to see the output in a way that separates the name and value a bit more, you could try this:

      env | awk -F= '{print $1 ": " $2}'

      This will give you the variable names followed by their values, separated by a colon. It makes things look organized!

      So, give these commands a try and see which one works best for you. It’s definitely cool to see what’s going on under the hood!


    2. To display all environment variable names along with their current values in your terminal, you can use the printenv command, which is a straightforward way to achieve this. Just type printenv in your terminal, and it will list all the environment variables and their values in a simple format. If you’re looking for something a bit more formatted, you can combine it with other commands, such as grep or column. For example, you could use printenv | column -t -s '=' to align the output in columns, making it visually easier to read by separating the variable names from their values.

      Another alternative is to use the env command, which also displays all the currently defined environment variables with their values. If you want to add a decorative touch, you can write a small shell script or a one-liner that utilizes the declare -p command if you’re using a Bash shell. For instance, you can run declare -p | awk -F'=' '{print $1, $2}' to get a customized output that separates variable names and values clearly. This way, you can delve deeper into your environment’s configuration while maintaining clarity and sight of all the variable settings that might affect your experiments.

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