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Bash: arguments
Access to parameters with variables $@ or $*.
Both expands to the positional parameters, starting from one.
$@When the expansion occurs within double quotes, each parameter expands to a separate word. That is,“$@”is equivalent to“$1” “$2” …$*When the expansion occurs within double quotes, it expands to a single word with the value of each parameter separated by the first character of the IFS special variable