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我試圖在新安裝的山獅上安裝macports，我先安裝了xCode，然後安裝了xCode命令行工具。之後，我運行xCode並同意條款和條件，然後安裝macports dmg軟件包。Mac OS上的macports x山獅
一旦我做了，我跑了自我更新命令，它的工作，但然後任何自我安裝或自我升級將無法正常工作。
Mo-Mughrabis-MacBook-Pro:~ mo$ sudo port -v selfupdate
---> Updating MacPorts base sources using rsync
receiving file list ... done
sent 36 bytes received 69 bytes 30.00 bytes/sec
total size is 3543040 speedup is 33743.24
receiving file list ... done
sent 36 bytes received 76 bytes 32.00 bytes/sec
total size is 512 speedup is 4.57
MacPorts base version 2.1.2 installed,
MacPorts base version 2.1.2 downloaded.
---> Updating the ports tree
Synchronizing local ports tree from rsync://rsync.macports.org/release/tarballs/ports.tar
receiving file list ... done
sent 36 bytes received 70 bytes 30.29 bytes/sec
total size is 53821440 speedup is 507749.43
receiving file list ... done
sent 36 bytes received 77 bytes 32.29 bytes/sec
total size is 512 speedup is 4.53
Creating port index in /opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports
Total number of ports parsed: 0
Ports successfully parsed: 0
Ports failed: 0
Up-to-date ports skipped: 15604
---> MacPorts base is already the latest version
The ports tree has been updated. To upgrade your installed ports, you should run
port upgrade outdated
Mo-Mughrabis-MacBook-Pro:~ mo$ sudo port upgrade outdated
Error: No ports matched the given expression
當我試圖運行sudo的港口安裝我得到了以下
Mo-Mughrabis-MacBook-Pro:~ mo$ sudo port install
Can't map the URL 'file://.' to a port description file ("Could not find Portfile in /Users/mo").
Please verify that the directory and portfile syntax are correct.
To use the current port, you must be in a port's directory.
任何一個可以幫助我什麼，我可能做錯了嗎？
感謝，