How to set environment variables for Xfce windowing environment

It's actually pretty difficult. You can use the setx command to set persistent environment variables for other users, but this won't work for NetworkService, because the service accounts have no passwords (so your credentials will always be rejected).

The only way that I know of to do this is using the task scheduler:

1. Set up a task to run as the user "network service".
2. Leave the triggers empty.
3. For the action, have it run cmd.exe with the parameters /c setx temp [target].
4. Run the task manually.
5. Delete the task.

This will work to set a persistent environment variable for the NetworkService user. As to whether this will successfully work to relocate the temporary files for that user, or whether it will cause any unpredictable side-effects, I can't say for certain. You may need to reboot to verify if it's putting the temp files where you want them.

You can verify that the environment variable has been changed for the correct user by using the environment command within WMIC.

It's possible to do this - here's a screencast, using the Grml ZSH configuration.

Further information:

• Mikas Blog Post
• The chpwd_profiles() function in the Grml ZSH configuration.

Edit: This is actually pretty easy to do. Here's the relevant portion of your ~/.zshrc:

function chpwd_profiles() {
    local profile context
    local -i reexecute

    context=":chpwd:profiles:$PWD"
    zstyle -s "$context" profile profile || profile='default'
    zstyle -T "$context" re-execute && reexecute=1 || reexecute=0

    if (( ${+parameters[CHPWD_PROFILE]} == 0 )); then
        typeset -g CHPWD_PROFILE
        local CHPWD_PROFILES_INIT=1
        (( ${+functions[chpwd_profiles_init]} )) && chpwd_profiles_init
    elif [[ $profile != $CHPWD_PROFILE ]]; then
        (( ${+functions[chpwd_leave_profile_$CHPWD_PROFILE]} )) \
            && chpwd_leave_profile_${CHPWD_PROFILE}
    fi  
    if (( reexecute )) || [[ $profile != $CHPWD_PROFILE ]]; then
        (( ${+functions[chpwd_profile_$profile]} )) && chpwd_profile_${profile}
    fi  

    CHPWD_PROFILE="${profile}"
    return 0
}
# Add the chpwd_profiles() function to the list called by chpwd()!
chpwd_functions=( ${chpwd_functions} chpwd_profiles )

Activate the profile for each directory you want:

zstyle ':chpwd:profiles:/path/to/directory(|/|/*)' profile NAME

And don't forget to actually make a profile:

chpwd_profile_NAME() {
    [[ ${profile} == ${CHPWD_PROFILE} ]] && return 1
    print "chpwd(): Switching to profile: $profile"

    export VAR=value
}

Edit #2: This would actually be rather neat to couple with named directories [Stackoverflow.net].