>Number:         9123
>Category:       bin
>Synopsis:       The -N option to tar does not recognize the year 2000 as valid
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people (Utility Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan  5 08:24:01 2000
>Last-Modified:
>Originator:     Trevin Beattie
>Organization:
Eyring Corporation
	
>Release:        1.4.1
>Environment:
	
System: NetBSD nanook 1.4.1 NetBSD 1.4.1 (NANOOK) #4: Fri Nov 19 11:21:23 MST 1999 trevin@nanook:/usr/src/sys/arch/i386/compile/NANOOK i386


>Description:
    In performing incremental backups, I use a command like:

	tar -czf incremental.daily.tar.gz -T file.list \
	    -N "`date --reference incremental.weekly.tar.gz`"

(using Gnu's `date'.)  This is supposed to back up only those files which
are newer than a reference backup.  It has been working fine up until
the turn of the millenium; since that time, the above command fails
with the error:

	tar: invalid date format `Tue Jan  4 12:01:13 MST 2000'

>How-To-Repeat:
~% cd /tmp
tmp% ls -l
total 213
-rw-rw-r--   1 trevin   staff        1442 Jan  4 12:01 bar.c
-rw-r-----   1 trevin   staff       10317 Jan  4 12:01 bar.ps
-rw-rw-r--   1 trevin   staff        2541 Jan  4 11:50 foo.c
-rw-r-----   1 trevin   staff       13490 Jan  4 11:51 foo.ps
-rw-r--r--   1 root     wheel          11 Jan  5 09:01 lpq.00075696
-rw-r-----   1 trevin   staff        2091 Jan  5 09:06 p25380
-rw-r-----   1 trevin   staff        2091 Jan  5 09:06 pf25380
-rw-rw-r--   1 shutchis staff      170321 Dec 17 14:08 projects-to-do.ps
/tmp% tar -cvf test.tar -N "Tue Jan  4 12:01:13 MST 2000" .
tar: invalid date format `Tue Jan  4 12:01:13 MST 2000'
/tmp% tar -cvf test.tar -N "Thu Dec 30 11:01:28 MST 1999" .
./
lpq.00075696
foo.ps
foo.c
bar.ps
bar.c
.0.1e88b
p25380
pf25380
.#p25380
#p25380#
tar: test.tar is the archive; not dumped
/tmp%

>Fix:
    Install Gnu tar-1.13 (from ftp://ftp.gnu.org/gnu/tar/tar-1.13.tar.gz).
>Audit-Trail:
>Unformatted: