Subject: a bug with the "tail" command
From: Jan Rogoyski <[email-masked]>
To: [email-masked]
Date: Thu, 21 Dec 2017 23:49:04 -0500
List-Id: <debbugs-submit.debbugs.gnu.org>

I had a program writing to a file, 'list'.  And then I issued the 
command "tail -f list".

tail: unrecognized file system type 0x53464846 for 'list'. please report 
this to [email-masked]. reverting to polling

The above message came out.

gcc --version displayed
gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4

I'm using a bash shell in Windows 10.

"apt list" displayed
coreutils/trusty-updates,now 8.21-1ubuntu5.4 amd64 [installed]

Hope this is of some value to you.

Jan Rogoyski