您可以使用 $(!!)重新计算(不是重复使用)最后一个命令的输出.

You can use $(!!) to recompute (not re-use) the output of the last command.

!! 自己执行最后一个命令.

The !! on its own executes the last command.

$ echo pierre
pierre
$ echo my name is $(!!)
echo my name is $(echo pierre)
my name is pierre