mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-03 14:48:57 +00:00
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
By 1996/12/04, the utmp element size has been changed, in order to
|
|
allow for longer usernames. This change renders all existing wtmp
|
|
files unusable. The cvt-wtmp utility is provided as an aid to convert
|
|
your old wtmp files into the new format, so you don't lose the
|
|
existing track record.
|
|
|
|
The tool cannot handle gzip'ed wtmp backups, so unzip them first if
|
|
you need. Then simply call it as:
|
|
|
|
./cvt-wtmp /var/log/wtmp*
|
|
|
|
The old wtmp files are being renamed to <file>.bak, so nothing will be
|
|
lost even in case of a failure. If you are only about to test whether
|
|
the tool will grok your files correctly, you can run it as:
|
|
|
|
./cvs-wtmp -n /var/log/wtmp*
|
|
|
|
The tool tries an ``educated guess'', based on the reasonability of
|
|
the timestamp values in the wtmp file. If it fails to recognize the
|
|
format of your wtmp, it normally bails out, or at least ignores
|
|
garbage records. In this case, rename the .bak files to the original
|
|
name, and try to force the conversion:
|
|
|
|
./cvs-tmp -f /var/log/wtmp.xxx
|
|
|
|
Make sure to verify the result however!
|
|
|
|
|
|
Dresden, Jan 2, 1996 Joerg <joerg@freebsd.org>
|