Display all environment variables

[phe]

Hello,

Does there exists in Linux an equivalent of the dos instruction "set".

When you type in set without any argument, it displays all environment variables that actually exists with theire values.
This is also applicable in XP dos-boxes.

I want to check what environment variables are actually set in my Linux (Fedora 8)

[Hlingler]

declare

V

[sideways]

funnily enough it's

set

at least in bash

[philippe_PMA]

With bash and family (sh, ksh, etc), you can use :

env

[sideways]

Originally Posted by philippe_PMA

With bash and family (sh, ksh, etc), you can use :

env

That's actually a more accurate answer to the OP's question, since set/declare list shell variables also (these variables are specific to the bash shell not a particular user environment), and also list shell functions if any are defined.

But It depends what you're looking for, env variables are passed to child processes, shell variables are not (but will be used if the shell is used in the child process obviously)

[phe]

env
set
declare

these 3 gives 3 different outputs ! ? ? ? ?

[sideways]

set & declare give the same output in bash (apart from a trivial difference regarding the 'last command' variable)

$ set > set
$ declare > declare
$ diff set declare
78c78
< _=-
---
> _=set
$

env just lists environment variables, which are a subset of all the bash shell variables (when bash starts a shell it sets its own shell variables and then sets every environment variable (for the user) to be an (uppercase) shell variable, so no real distinction between env and shell variables in bash)