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test:tldr:89351
This command compares two variables to check if they have the same value. Let's break it down:
-
test
is a command used to evaluate conditions. In this case, it is checking for equality between two variables. -
${$MY_VAR}
is a variable expansion that first expands$MY_VAR
and then expands the result of$MY_VAR
as a variable itself. This can be interpreted as accessing the value of a variable named by the value of$MY_VAR
. -
${-bin-zsh}
is a variable, likely representing some value likebin-zsh
. -
==
is the equality operator used to compare the two sides of the expression.
Putting it all together, the command checks if the value of the nested variable ${$MY_VAR}
is equal to the value of the variable ${-bin-zsh}
. If they are equal, the test is successful and returns a true value. If they are not equal, the test fails and returns a false value.