How to set and list environment variables on Linux
In this guide we ll show how to list all the environment variables on a Linux system as well as set new ones Setting new environment variables can either be done temporarily or permanently if you need them to survive a reboot We ll show instructions for both methods below In this tutorial you will learn
How to Set and List Environment Variables in Linux Linuxize, How to Set and List Environment Variables in Linux Updated Jun 3 2021 6 min read In Linux and Unix based systems environment variables are a set of dynamic named values stored within the system that are used by applications launched in shells or subshells
How to show an environment variable s current value
5 Answers Sorted by 49 Just echo VARIABLENAME For example for the environment variable HOME use echo HOME Which then prints something similar to home username Edit according to the comment of St phane Chazelas it may be better if you use printenv instead of echo printenv HOME Share Improve this answer Follow
List Environment Variables in Linux Baeldung on Linux, 3 Using the env Command env is another shell command we can use to print a list of environment variables and their values Similarly we can use the env command to launch the correct interpreter in shell scripts We can run the env command without any arguments to display a list of all environment variables env XDG VTNR 7 XDG SESSION ID c1
How to list all variables names and their current values
How to list all variables names and their current values , Enter the following command in a terminal to print all the environment variables printenv For further information about this command read the printenv man page To show a list including the shell variables you can enter the next command set o posix set less
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How To View and Update the Linux PATH Environment Variable
How To View and Update the Linux PATH Environment Variable Step 1 Viewing the PATH Variable You can view the PATH variable with the following command echo PATH An unchanged PATH may look something like this file paths may differ slightly depending on your system Output usr local sbin usr local bin usr sbin usr bin sbin bin usr local games usr games
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How to Check Environment Variables View All Environment Variables Use the printenv command to view all environment variables Since there are many variables on the list use the less command to control the view printenv less How to Set Environment Variables in Linux phoenixNAP. According to the Bash manual you can use the set built in command to show all of the environment variables that have been set The set command will also display the definitions of any functions If you only want to see the variables and not the functions then you can turn on POSIX mode before running the set command If you use env on a modern Linux system the value will match the location of the env binary e g usr bin Use echo to Display a Linux Environment Variable One of the quickest ways to display a single Linux environment variable is to use the echo command The basic syntax is echo variable name For example to print the PATH
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