我在 linux (Red Hat) 系统上有三个目录。说 /usr/local/one、/usr/local/two 和 /usr/local/three。我想要一种机制,它的行为就像一个目录,它将一、二和三的内容组合到 /opt/oneTwoThree 中,而无需物理移动它们的文件内容。
IE..
$ find /usr/local/
/usr/local/one
/usr/local/one/aaa
/usr/local/one/bbb
/usr/local/three
/usr/local/three/fff
/usr/local/two
/usr/local/two/ccc
/usr/local/two/ddd
/usr/local/two/eee
$ find /opt/oneTwoThree
/usr/local/oneTwoThree
/usr/local/oneTwoThree/aaa
/usr/local/oneTwoThree/bbb
/usr/local/oneTwoThree/fff
/usr/local/oneTwoThree/ccc
/usr/local/oneTwoThree/ddd
/usr/local/oneTwoThree/eee
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