Where is my .vimrc file?

It is in /etc/vim

How to change vim cursor view in insert mode?

In the /etc/vim/vimrc file, add the following lines:

let &t_SI = "\e[5 q"

let &t_EI = "\e[1 q"

Other options (replace the number after \e[):

Ps = 0 -> blinking block.

Ps = 1 -> blinking block (default).

Ps = 2 -> steady block.

Ps = 3 -> blinking underline.

Ps = 4 -> steady underline.

Ps = 5 -> blinking bar (xterm).

Ps = 6 -> steady bar (xterm).

Credits to this stackoverflow answer.