Jika sebelumnya Anda belum mengaktifkan semacam audit, tidak ada alat yang dapat melaporkan ini setelah file dimodifikasi. Anda bisa mendapatkan tanggal dan waktu kapan file terakhir diubah, tetapi bukan riwayat revisi.
 Ke depan, Anda dapat menginstal, mengatur, mengaktifkan auditd kemasan. 
 Dari auditctl halaman manual:
-w path
    Insert  a  watch for the file system object at path. You cannot insert
    a watch to the top level directory. This is prohibited by the  kernel. 
    Wildcards  are not supported either and will generate a warning. The way
    that watches work is by tracking the inode internally. If you place a 
    watch on a file, its the same as  using  the  -F  path  option  on a 
    syscall rule. If you place a watch on a directory, its the same as using
    the -F dir option on a syscall rule.  The  -w form  of  writing watches 
    is for backwards compatibility and the syscall based form is more
    expressive. Unlike most syscall auditing rules,  watches  do  not impact
    performance  based on the number of rules sent to the kernel. The only 
    valid options when using a watch are the -p and -k. If you  need to     
    anything fancy like audit a specific user accessing a file, then use 
    the syscall auditing form with the path or dir fields.
 Ada diskusi lebih lanjut tentang ini di pertanyaan Mencatat pembuatan file tersembunyi
Di sini beberapa diskusi untuk meretas dengan inotify untuk membuatnya memberi Anda PID dan UID.http://www.ioremap.net/node/55
Lihat juga Audithttp://andries.filmer.nl/kb/Monitoring-file-system-events-with-inotify,-incron-and-authctl/129#Audit
            /etc/motd tidak ditampilkan ketika pipa bernama?         
            Apakah mungkin untuk mengubah file basis data kata sandi (/ etc/passwd) di linux?