On 2023/11/23 14:18:22 +0100, Nowarez Market <my2...@has.im> wrote: > > > Yesterday I was playing around some software and at a the certain > point in time I launched in the shell: > > wiz# rm -Rf * > ksh: rm: wrong param -3
it's quite obvious when you know, yet maybe obscure the first time you run into it. The shell expands * to the list of matching files (i.e. all the files in the current directory) and pass them to rm(1). Now, what happens if you have a file called '-3'? (or any file whose first character is a minus sign) it runs `rm -Rf -3 ...other files...' and then rm thinks -3 is an option. This is a "common" issue with globbing, and in fact almost all programs understand "--" to separate flags from files.
