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printf:tldr:b24f6
The command printf "${%s\n}" "${Hello world}"
is a combination of the printf
command and various formatting strings and arguments.
Here's a breakdown of the command:
-
printf
: It is a command-line utility used to format and print text. It takes one or more arguments, including a formatting string, and prints the formatted output to the console. -
"${%s\n}"
: This is the formatting string passed toprintf
. It specifies how the provided arguments should be formatted and displayed.%s
is a placeholder for a string, and\n
represents a newline character. -
"${Hello world}"
: This is the argument passed toprintf
. In this case, it is the text "Hello world" enclosed in double quotes. The double quotes are used to preserve the space between the two words as a single argument.
The purpose of this command seems to be to print the string "Hello world" with a newline character after it. However, the formatting string ${%s\n}
is incorrect syntax. A valid formatting string could be "${%s}\n"
, which would substitute the argument ${Hello world}
into the string and append a newline character to it.