Make a shell alias, that is much, much easier than changing gnome-terminal's GUI (as there is no option for it, you would need to code it):
Assuming you are using
bash, put the following into
alias ti='terraform init'
alias tp='terraform plan'
If you use
tcsh the equivalent would be
alias ti 'terraform init'
alias tp 'terraform plan'
~/.tcshrc (ideally in a section that is excluded in non-interactive mode).
After installing these aliases and starting a new shell you can type these aliases with many fewer keystrokes than the whole command.
Also easier than typing the whole command would be to use your commandline history. One can search backward in the previously entered commands for those that start with letters. In
bash you can start backwards search in history with
Ctrl+r, then start typing and using cursor keys
tcsh this is a litte easier, just type the first few letters (e.g.
te), then search for previous/next command lines starting with the letters entered, by pressing