Find the correct help function on command line.

hhelp.sh

function hhelp() {
  help $1     > /dev/null 2>&1 && echo "yes, help $1"    || echo "no, help $1" ;
  man $1      > /dev/null 2>&1 && echo "yes, man $1"     || echo "no, man $1";
  $1 --help   > /dev/null 2>&1 && echo "yes, $1 --help"  || echo "no, $1 --help";
  $1 -h       > /dev/null 2>&1 && echo "yes, $1 -h"      || echo "no, $1 -h";
  apropos $1  > /dev/null 2>&1 && echo "yes, apropos $1" || echo "no, apropos $1";
  whatis $1   > /dev/null 2>&1 && echo "yes, whatis $1"  || echo "no, whatis $1";
  which $1    > /dev/null 2>&1 && echo "yes, which $1"   || echo "no, which $1";
}
# because sometimes it is hard to find the correct help function on command line.

add tldr + a check to see if tldr exists before showing it now.