root@QFX5200> request system reboot 
Reboot the system ? [yes,no] (no) yes 
...
System going down IMMEDIATELY                                                  
...                                                                              
  Booting `Juniper-Linux-Upgrade'
...
Moving [HOST_COMPAT_VERSION lxc_pkg_install.sh pkg-app-junos.tgz pkg_install.sh platform_mappings qfx-5e-21.4R3-S3.4.tgz version.txt] to /var/sw/packages/applications
-------------------------------
Installing /var/sw/packages/applications/qfx-5e-21.4R3-S3.4.tgz
-------------------------------
...
 Installation for Junos
Rebooting the system to complete the installation
---------------------------------------------
...
Unix Domain sockets Lock manager
Lock manager 'lockmgr' started successfully.
...
Thu Feb  2 13:31:26 UTC 2023

FreeBSD/amd64 (QFX5200) (ttyu0)

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