root@shawnzhou:/usr/src/app# dpkg-reconfigure tzdata
Can't exec "locale": No such file or directory at /usr/share/perl5/Debconf/Encoding.pm line 16.
Use of uninitialized value $Debconf::Encoding::charmap in scalar chomp at /usr/share/perl5/Debconf/Encoding.pm line 17.
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 76.)
debconf: falling back to frontend: Readline
Can't exec "dpkg-query": No such file or directory at /usr/sbin/dpkg-reconfigure line 177.
readline() on closed filehandle QUERY at /usr/sbin/dpkg-reconfigure line 179.
Can't exec "dpkg": No such file or directory at /usr/sbin/dpkg-reconfigure line 72.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 73.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 74.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 75.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 76.
/usr/sbin/dpkg-reconfigure: tzdata is not installed