~/bin being /home/user/bin or /root/bin not system's /bin or /usr/bin
I create a ~/bin in the applicable user's account which limits it to being accessible and run only by the specific user. /root/bin is usually cront.something scripts wired into crontab (nice short path). Anything else root needs a script for makes sense to keep inside the builpack directory so it's a "./something" run. /home/user/bin is user specific things.
I guess I could do user specific aliases to these locations or add the locations into the path but but specifying the path or going to that directory doesn't slow me down enough.