I work with many servers each day, and more often than not I wind up sourcing a script or two from one of my remote servers, thusly: . <(curl -Ss https://mygitrepo.whatever/repo/file.sh) Now and then the server complains by responding: bash: /dev/fd/63: No such file or directory I went googling and found that actually it’s not a very uncommon thing to have happen. It turns out the symlink /dev/fd > /proc/self/fd was missing.