Configuring terminal and referencing username in bash scripts.

[Linux for blind general discussion]

Okay, so I've been using a ~/.bash_profile file with the following contents:

rm -f ~/.bash_history
export PS1='$(tty | sed 's#^/dev/tty##')\$'
export PATH=~/Programming/bash-scripts:$PATH

To clear the command history from the previous session, change the
prompt to something extremely short instead of the default user at host
/path/to/working/directory, and to add the directory where I store my
bash scripts to my path.

It works when logging into the console, but I recently bought a new
desktop and decided to give running a full desktop a go since I'm no
longer running a 12-year-old CPU with 4GB of RAM, and whichever
terminal emulator Debian Mate uses by default is clearly ignoring
~/.bash_profile.

So is there somewhere I can put the above lines so they'll besourced
both when logging into a text-only console and when launching a
terminal emulator?

Also, I have some scripts to automate sshing into some remote hosts or
mounting the remote filesystems locally, and part of it involves
creating a mounttt point that needs to be chown to my user. Is there a
shell variable I can use to make these scripts work for any user
instead of needing to edit the script to use the name of the user I'm
logged in as?