Sometimes you can prefix with "< file". Sometimes, not so much.
< /etc/passwd while IFS= read line || [ -n "$line" ]; do printf '%s\n' "$line"; done
Meanwhile, in ZSH...
Meanwhile, in languages that do not need IFS= and || [ -n "$line" ] checks...
Nice, I learned something and thank you
aliasing c to cat still requires less keystrokes
In bash, type:
(That < is not a prompt, that's the less than symbol)