y have a convenient mnemonic. The # key is on the left side of the $ key on the keyboard and operates from the left. The % key is on the right of the $ key and opera... sn't match any filenames the parameter is usually left on the command like literally. Under bash this is... command line arguments. Non-option arguments are left in the global array ARGV, the global variable ARG... responds to a char equal to char, the variable is left untouched. Returns true.
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