Switch user from command line

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1

I use LXDE. What I’m trying to achieve is locking a session, but not by means of xscreensaver.
I can send a dbus message

dbus-send --print-reply --system --dest=org.freedesktop.login1 \
/org/freedesktop/login1 org.freedesktop.login1.Manager.Suspend \
boolean:true

to achieve same effect as when I press “Sleep”.
How do I achieve “Switch user” effect? lxlock is not what I want, it calls xscreensaver and makes it ask for a password, instead of just activating it

2

Not sure what you’re describing regarding the screensaver,
But answering your subject line, the following will switch to another User account at the command line (That command option is a hyphen, letter L for “login” in lower case)

su -l n*ew_user_account*

TSU

3

Hello. Unfortunately, I didn’t mean switch the user in command line, but rather from command line.
Attaching a screenshot of button I want to “press” from command line https://i.imgur.com/mHzEwwo.png

4

Not sure what you are asking for…

What I provided enables you to “press that button” from within a running terminal.
Actually, avoiding the complications from actually running through the GUI code, the command I provided accesses the equivalent functionality behind the GUI.

TSU

5

User switching is performed by display manager, so you need to know what DM you are using. Here is what happens when you press Switch user button:

    if (handler_context->switch_user_GDM)
        g_spawn_command_line_sync("gdmflexiserver --startnew", NULL, NULL, NULL, NULL);
    else if (handler_context->switch_user_KDM)
        g_spawn_command_line_sync("kdmctl reserve", NULL, NULL, NULL, NULL);
    else if (handler_context->switch_user_LIGHTDM)
        dbus_Lightdm_SwitchToGreeter(&err);
    else if(handler_context->switch_user_LXDM)
        g_spawn_command_line_sync("lxdm-binary -c USER_SWITCH", NULL, NULL, NULL, NULL);
6

@arvidjaar thank you for input, but I don’t know where to execute the code you provided, please hint (in bash it produces errors).
Also, I think I’ve found a working solution (for LXDE)

dm-tool switch-to-greeter

@tsu2 It’s my bad that I’ve worded it this way, I meant achieving exactly (and no more) than the “switch user” button does, and that is locks your session without enabling any lock mechanisms in screensavers, which in comparison lxlock does (I don’t want to get stuck with other keyboard layout being active, considering xscreensaver freezes for seconds after you type a wrong password).

7

It has nothing to do with LXDE. dm-tool is LightDM utility. You really need to learn difference between display manager and desktop environment.

If you said from the very beginning you were using LightDM, you may have got answer more soon.