F5 CLI commands

Might be worth starting here https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos_management_guide_10_1.html https://support.f5.com/content/kb/en-us/products/big-ip_ltm/manuals/product/bigip_tmsh_refguide/_jcr_content/pdfAttach/download/file.res/Traffic_Management_Shell_(tmsh)_Reference_Guide.pdf

What do you mean by useful ? Useful only depends on what you're wanting to do.

Most used for myself

list ltm virtual list ltm pool show net self-ip

(To name but a few...)

For example Using single node ip address to find respective virtual ip and name. I tried in F5 gui network map tab, searched using node address and unable to find respective virtual ip and name. I need CLI commands to find this and also frequently using commands.

My favorite one is 'run util bash'. That gets you out of TMSH so that you can look at the logs in /var/log/ :)

The TMSH manual is pretty complete - so have a look at that. Tab autocomplete is available for most things in TMSH.

Using the 'list' and 'show' commands for a virtual is generally pretty informative.