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Useful commands.

# Show the current configuration.
show configuration

#Show the logs of the device.
show log messsage

#Show but compare
show | compare

#Show but display as a line configuration and not XML.
show | display set

#Show interface list and status
show interfaces terse

#Show current hardware
show chassis hardware

#Show global routing table
show route

show interface | incl (proto|Desc)

#Show processus using memory and general system performance stats
show system processes summary

#Check CPU usage
show chassis routing-engine
show system process extensive | no-more

Delete interface config

delete interface ge-0/0/4
delete interface ge-0/0/5
delete interface ge-0/0/7
delete interface ae6

Syslog configuration.

set system syslog user * any emergency
set system syslog host any any
set system syslog host port 1514
set system syslog file messages any notice
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any

Radius configuration.

set system radius-server $RADIUS_SERVER_IP_HERE source-address $SWITCH_IP_HERE
set system radius-server $RADIUS_SERVER_IP_HERE secret $PASSWORD_HERE

set system authentication-order [ radius password ]

#Create user profiles based on FreeIPA group.

edit system login
set user HELPDESK class read-only
set user OPERATOR class super-user
set user remote full-name "default remote access user template"
set user remote class read-only

Create a vlan

set vlans OSTACK-TEST-1 vlan-id 70

Create a L3 VLAN interface.

set vlans MGMT vlan-id 69
set interfaces ge-0/0/23 unit 0 family ethernet-switching port-mode trunk 666 vlan members 69
set interfaces vlan unit 69 family inet address
set vlans MGMT l3-interface vlan.69

Enable SSH with root login.

set system services ssh root-login allow

Create a default route.

set routing-options static route next-hop

Add a nameserver for DNS resolution.

edit system name-server 

Upgrade the JunOS image.

request system software add

file copy  /var/tmp/

request system software add /var/tmp/jinstall-ex-2200-12.3R5.7-domestic-signed.tgz reboot

Repair a JunOS partition that rebooted from the backup partition.

**                                                                   **
**                                                                   **
**  It is possible that the primary copy of JUNOS failed to boot up  **
**  properly, and so this device has booted from the backup copy.    **
**                                                                   **
**  Please re-install JUNOS to recover the primary copy in case      **
**  it has been corrupted and if auto-snapshot feature is not        **
**  enabled.                                                         **
**                                                                   **
show chassis alarms
show system storage partitions
request system snapshot media internal slice alternate
show system snapshot media internal
request system reboot slice alternate media internal

Create an admin user.

set system login user cmaker authentication plain-text-password
set system login user cmaker class super-user

Add a SSH key to a local user for password-less auth.

set system login user prox-exporter-juniper authentication ssh-rsa "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDJZTRPs8WXsD1yNmWd69/zHNDf4ApvTXDjfk0rxEjgiDsOgWvID0Q8ZH0tFzSV9L0W7a/9jG0POuJyiGYF6M4X2QdEPSZ2CgxRm7GL4A1SJ4xbnCYny2k4L8C7UrDrvqThv6/FyyJopHCPp7S3j0iAI6c+Gtv59sbUvdilWC4Y5LX0ho+yocMaGvTOk+l5aQRU9eWmZsD0/3D0V99iBnm70rlEeEIr1Oe+M+y/Q/0vmBVdC75COCxu84PnLvqPH2yOf3j581wgIVncKbApB0b9ApTbCE94jNljtwM4uGM9qICOf0BwbrDfFT1L1n5ZQx7BZnD9410wv2jTYXTPUJV1"
set system login user prox-exporter-juniper class super-user

Password recovery.

Boot normally.

Prompt : Hit [Enter] to boot immediately, or space bar for command prompt.

press space during the boot process

Type :
loader> boot -s

Type : 
Enter full pathname of shell or 'recovery' for root password recovery or RETURN for /bin/sh: recovery

Configure SNMP with contact and location strings.

set snmp name cmaker-ex2200 description cmaker-ex2200
set snmp location 9880 Clark
set snmp contact "[email protected]"
set snmp community cmaker authorization read-only

Aggregated interfaces (AE)

#Increase the number of AE interfaces.
set chassis aggregated-devicesethernetdevice-count4 

#Create the AE interface and the switching options.
set interfaces ae3 description AE-LACP-ULTRABACON-PROXMOX
set interfaces ae3 aggregated-ether-options lacp active
set interfaces ae3 unit 0 family ethernet-switching port-mode trunk
set interfaces ae3 unit 0 family ethernet-switching vlan members 69
set interfaces ae3 unit 0 family ethernet-switching vlan members 99-100
set interfaces ae3 unit 0 family ethernet-switching vlan members 210
set interfaces ae3 unit 0 family ethernet-switching vlan members 2001
set interfaces ae3 unit 0 family ethernet-switching native-vlan-id 666

cmaker@ex2200-cmaker> show configuration interfaces ge-0/0/17 | display set 
set interfaces ge-0/0/17 description LACP-ULTRABACON-PROXMOX
set interfaces ge-0/0/17 ether-options 802.3ad ae3