WP-CLI Crashes: Uncovering the Hidden Barrier Blocking Your Commands

"I downloaded wp-cli.phar, uploaded it to ~/bin/wp, SSH'd in, and ran wp. Got -bash: wp: command not found. The file is right there. Why?" If you've set up WP-CLI on a shared host using a browser-based file manager, you may have hit exactly this. The file exists, permissions are 755, size is 6.8 MB