Saving session... ...copying shared history... ...saving history...truncating history files... ...completed. [Process completed]
getting the above message terminal and nothing is working in it
Question marked as
Kind of need more info here.
Are you saying this happens every time you open a new Terminal.app window/session?
If so, it sounds like you have something set in your shell startup files that is causing this. The trick is finding it and cleaning up.
depending on your setup (OS version, shell preference, etc.) the file in question could be;
~/.bash_profile
~/.zshrc
~/.tcshrc
If the command is preventing you from using the terminal at all (e.g. the shell becomes unresponsive once this message appears) then you'll need to use some other application to edit your shell startup file (I suggest BBEdit, but there are many others)
If the message just posts but you're free to continue working then you can use your preferred shell text editor (vi/vim/emacs/nano/whatever) to edit the file and fix the error.
You'll need to look at the files and identify what's causing this (or post it here for others' comments).