bash expanding value of a variable to use in another variable
-
02-06-2021 - |
質問
I hope the question makes sense, I would like to do something like:
a=test
b=a
echo ${$b} # should echo test
Basically I'd like $b
to expand to the value a
and have bash echo out the value of variable $a
(since ${a}
is test
).
What syntax should I use?
解決
a=test
b=a
echo ${!b} # does echo test
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