NAME: tt2000_write_config PURPOSE: Writes the tt2000_config file CALLING SEQUENCE: tt2000_write_config, copy=copy INPUT: none, the filename is hardcoded, 'tt2000_config.txt',and is s put in a folder given by the routine tt2000_config_filedir, that uses the IDL routine app_user_dir to create/obtain it: my linux example: /disks/ice/home/jimm/.idl/tt2000/tt2000_config-4-linux OUTPUT: the file is written, and a copy of any old file is generated KEYWORD: copy = if set, the file is read in and a copy with the !stime appended is written out HISTORY: Copied shamelessly from thm_write_config by pcruce on 2012/04/18 $LastChangedBy: nikos $ $LastChangedDate: 2013-06-17 16:29:26 -0700 (Mon, 17 Jun 2013) $ $LastChangedRevision: 12548 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/general/misc/time/TT2000/tt2000_write_config.pro $