Linux 管理者は、ファイルを削除しようとしたときに次のメッセージを受け取ります。 次のコマンドのどれが問題を解決しますか?
正解:A
The error given is what the user sees when the immutable flag has been set on a file. Therefore 'chattr -i test.txt' will remove the immutable flag (remember that chattr uses - and + to turn off/on options unlike a normal command option which is only ever preceeded by a -) so that the file can then be deleted by rm.