macOS
$ chmod 0777 BridgePoint.app/
chmod: Unable to change file mode on BridgePoint.app/: Read-only file system
$ chmod +w BridgePoint.app/
$
一歩進んだ。
macOS
$ chmod +w bridgepoint
KM-S05:MacOS administrator$ ls -al
total 56
drwxrwxr-x@ 3 administrator staff 102 10 8 10:19 .
drwxrwxr-x@ 6 administrator staff 204 7 26 16:57 ..
-rwxr-xr-x@ 1 administrator staff 27100 7 26 16:56 bridgepoint
$ sudo chmod 0777 bridgepoint
Password:
chmod: Unable to change file mode on bridgepoint: Read-only file system
$ sudo chmod a+w bridgepoint
chmod: Unable to change file mode on bridgepoint: Read-only file system
ref
Linuxの権限確認と変更(chmod)（超初心者向け）
https://qiita.com/shisama/items/5f4c4fa768642aad9e06