Commands by isaacmarcos (1)

  • Prints the variable "$a" 80 times with a new line at the end. There is no need for backspaces as printf (by default) does not print a newline nor an space. Use a bunch of variables called "$_0" and a number. The name start with an underscore and a 0 to avoid conflicts with already defined variables. If still worried: All variables may be cleared up before use with "unset $_{1..080}". A command with a variable count is a bit of a mouthful: a=hello+; n=7; eval printf "%s" '$_{1..0'"$n"'}"$a"' $'$\'\\n\'' And carry some risk if the variable "$n" could be set by an attacker. Show Sample Output


    0
    a=+; printf "%s" $_{1..080}"$a" $'\n'
    isaacmarcos · 2017-06-06 21:59:58 0

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