When I try to execute files in Linux, I'm always annoyed by the need to write ./executablefile instead of just executablefile. I get why it's done, so it won't have an ambigous input, one that is a command and also a file.But I want it to execute the file if a command is not found (commands have priority). I made a tweak through a guide that if you write a command and it's not found, it searches it in the pacman database and tells me in which package the command is at, so I know it's possible to do something when it says command not found.  Is there a good way to do this?
Execute a file if a command is not found
shell;command line;command not found