找不到maven的conf文件在哪里，在mac下用brew安装后修改settings.xm
我运行以下命令但找不到：
devu@devu-mac 1.0.14 % pwd
/usr/local/Cellar/mvnvm/1.0.14
devu@devu-mac 1.0.14 % which mvn
/usr/local/bin/mvn
devu@devu-mac 1.0.14 % ls -l /usr/local/bin/mvn
lrwxr-xr-x 1 devu admin 30 Feb 17 20:50 /usr/local/bin/mvn -> ../Cellar/mvnvm/1.0.14/bin/mvn
devu@devu-mac 1.0.14 % ls -l /usr/local/Cellar/mvnvm/1.0.14
total 40
-rw-r--r-- 1 devu admin 741 Feb 17 20:50 INSTALL_RECEIPT.json
-rw-r--r-- 1 devu admin 11345 May 11 2020 LICENSE
-rw-r--r-- 1 devu admin 2094 May 11 2020 README.md
drwxr-xr-x 4 devu admin 128 Feb 17 20:50 bin
drwxr-xr-x 3 devu admin 96 Feb 17 20:50 libexec
devu@devu-mac 1.0.14 % ls -l
total 40
-rw-r--r-- 1 devu admin 741 Feb 17 20:50 INSTALL_RECEIPT.json
-rw-r--r-- 1 devu admin 11345 May 11 2020 LICENSE
-rw-r--r-- 1 devu admin 2094 May 11 2020 README.md
drwxr-xr-x 4 devu admin 128 Feb 17 20:50 bin
drwxr-xr-x 3 devu admin 96 Feb 17 20:50 libexec
devu@devu-mac 1.0.14 % ls -l bin
total 16
-r-xr-xr-x 1 devu admin 155 Feb 17 20:50 mvn
-r-xr-xr-x 1 devu admin 160 Feb 17 20:50 mvnDebug