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hr:tldr:49498
hr: Print a multiline horizontal rule.
$ hr ${string_a} ${string_b} ${string_c}
try on your machine
This command is a shell command or script, and it executes the "hr" command with three parameters represented by ${string_a}, ${string_b}, and ${string_c}.
The ${string_a}, ${string_b}, and ${string_c} are variables in shell scripts. The command will substitute the values of these variables into the command before executing it.
So, if the values of ${string_a}, ${string_b}, and ${string_c} were "hello", "world", and "!", respectively, the command would be executed as "hr hello world !". The actual behavior of the "hr" command and its effect would depend on the specific script or program it corresponds to.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.