If an invalid TZ argument is passed to /bin/date, it silently fails but prints the UTC result: [dberry@dberry ~]$ TZ=EDT date -d @0 Thu Jan 1 00:00:00 EDT 1970 [dberry@dberry ~]$ TZ=foo date -d @0 Thu Jan 1 00:00:00 foo 1970
It works correctly if using no argument or a valid argument: [dberry@dberry ~]$ date -d @0 Wed Dec 31 19:00:00 EST 1969 [dberry@dberry ~]$ TZ=EST5EDT date -d @0 Wed Dec 31 19:00:00 EST 1969 [dberry@dberry ~]$ TZ=UTC date -d @0 Thu Jan 1 00:00:00 UTC 1970 [dberry@dberry ~]$ rpm -q coreutils coreutils-8.4-19.el6.x86_64 [dberry@dberry ~]$ uname -a Linux dberry.csb 2.6.32-279.19.1.el6.x86_64 #1 SMP Sat Nov 24 14:35:28 EST 2012 x86_64 x86_64 x86_64 GNU/Linux [dberry@dberry ~]$ cat /etc/redhat-release Red Hat Enterprise Linux Workstation release 6.3 (Santiago) [dberry@dberry ~]$ date Thu Apr 18 16:23:46 EDT 2013 Donald Berry, RHCE Technical Account Manager Red Hat Canada Ltd. mobile: 647-338-6329
