On 2025-10-30 at 13:33, Michael wrote: > The command > > ls -- *.pdf > > has been run and a very large number of PDF files has been listed. > > It is very difficult to spot any strangely named PDF files. > > What command should be issued to easily list any strangely named PDF > file ? Try: $ ls -- *.pdf | grep ' -' This should show you any files whose name include a space followed by a dash. The space would be treated as a token separator, and the dash would be treated as the beginning of a new argument to ls. If you want to look only for things that might be parsed as "long-form" options, try the same command except with two dashes in a row rather than just the one. -- The Wanderer The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. -- George Bernard Shaw
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