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    Since it looks like you're intending to output the command and its arguments as a single string, it would make more sense to use $*. Commented Aug 2, 2022 at 11:48
  • @terdon, would you like to show me the case in which the quoting will be necessary here? Commented Aug 2, 2022 at 13:08
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    @MainFurr sure, run it as foo.sh "*" for example. It should print foo.sh * but if you leave it unquoted, it will print foo.sh and then everything in the current directory. Commented Aug 2, 2022 at 13:10
  • @terdon seems like bash behaves differently from csh, and I didn't pay attention to interpreting when called the bash with test script as argument from csh. Ok, thanks. Commented Aug 2, 2022 at 13:29
  • Thanks @MainFurr! In this specific case, $0 will print ../cc.sh, while $@ print the rest of the arguments that come after, is that true? Commented Aug 2, 2022 at 23:53