windows - reading environmental variables in powershell or cmd yield different results -

i have been puzzling on issue environmental variables in windows 7.

we have jenkins server cannot find ssh keys in %home% environmental variable wants access path:

/c/users/jenkins 

however if use

echo %home% 

in normal command prompt window jenkins user result

c:\users\jenkins 

however if use env command in windows powershell get

/c/user/jenkins 

in normal gui accessible system properties - advanced tag -> environmental following

c:\users\jenkins 

i have tried setting them issue persists. in far jenkins gets same output powershell.

my questions how set them back? (not cmd , windows system think set wrong) how on earth accessing same environmental variable give me different outputs ? know way in can occur ? know stored can manually edit stored ?

thanks in advance.

as mentioned in comment @luis, env command not part of powershell. provided other set of utilities have installed , intended emulate linux env command.

to refer environment variable in powershell, use $env:<variable-name> syntax or environment provider - get-content env:\<variable-name>.

to set environment variable, can use $env:<variable-name> = "<variable-value>"

for more info, try running help about_environment_variables in powershell.