While I'm reading file(1) I noticed this in the man page (emphasis mine):When adding local definitions to /etc/magic, make sure to preserve these keywords.   Users depend on knowing that all the readable files in a directory have   the word text printed. Don't do as Berkeley did and change shell   commands text to shell script.What's the story behind this sentence? I guess Berkeley refers to BSD (Berkeley software distribution) but Google didn't give enough information about this.Link to file(1) http://man7.org/linux/man-pages/man1/file.1.htmlSome digging around shows that this statement was added 27 years ago linkDon't do as one computer vendor did \- change ``shell commands text''to ``shell script''.and later changed to current statement linkDon't do as Berkeley did \- change ``shell commands text''
What's the story behind command file's suggestion?
history;file command