On Fri, Jul 02, 2021 at 09:49:23AM +0200, to...@tuxteam.de wrote: > sudo dd of=/etc/hosts oflags=append
This appears to be a typo for "oflag=append", which is a GNU extension, not part of the standard POSIX dd. No wonder I didn't know about it. ;-) The bullseye version of GNU coreutils dd also gives a warning message with this particular flag: unicorn:~$ echo g | dd of=foo oflag=append dd: you probably want conv=notrunc with oflag=append 0+1 records in 0+1 records out 2 bytes copied, 9.141e-05 s, 21.9 kB/s Not sure if that's unique to bullseye. But anyway, yes, the warning is accurate; without conv=notrunc, my test file "foo" got overwritten with just the "g".
