Linux Commands: printenv

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printenv is used to print out the environment variables. Environment variables are a common form of setting global values across a terminal session. Environment variables can be set by the systems, automation scripts, or by the user.

You can print your all environment variables using just printenv.

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If you want to print the value of a specific variable you can use printenv <variable name>.

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Conclusion

If you are ever stuck and want to know what was the value of the environment variable you can use it. I have found myself using this quite often when debugging issues in production or on my local machine.

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Comments (2)

chau giang's photo

why you do not use just env command?

Umesh Yadav's photo

Hey, so env allows you to print all the environment variables, set a environment variable and disable all the environment variables. But it doesn’t provide a way to print a value of specific environment variable which printenv gives you out of the box. So the use case where you want to print a specific value of environment variable this comes handy