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printf:tldr:532b5
printf: Print a text message composed with environment variables.
$ printf "${var1: %s\tvar2: %s\n}" "${$VAR1}" "${$VAR2}"
try on your machine
This command is using the printf
command to print a formatted string with the values of two variables var1
and var2
.
Here is the breakdown:
printf
is a command used to format and print data."${var1: %s\tvar2: %s\n}"
is the format string. It defines how the output will be formatted. In this case, it includes two placeholders%s
to represent where the values ofvar1
andvar2
will be inserted. The\t
represents a tab character and\n
represents a newline character, which helps in formatting the output."${$VAR1}"
and"${$VAR2}"
are the values being inserted into the format string. They represent the values of the variablesvar1
andvar2
respectively. However, there seems to be a mistake with the syntax. It should be${var1}
and${var2}
without the$
beforeVAR1
andVAR2
. The$
sign is used to expand the variable, so it should not be used again within the curly braces.
To correct the command, it should be:
printf "${var1: %s\tvar2: %s\n}" "${var1}" "${var2}"
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.