[Alastair Davies] asks: how can one determine the current user name? This is often handy when pre-filling default values for an entry field in a form, for example. There may be a suitable environment variable: for example, [Windows] 2000 & XP set the variable '''USERNAME''' and [MacOS X] sets the variable '''USER'''. These will be present in the magic [env] array. On [POSIX] systems, the [TclX] command '''id user''' will return the user's login name. Independent of TclX, but still only for POSIX systems, there is a [critcl] implemention of [userid]. On Windows 2000 & XP, the [twapi] command '''get_current_user''' will return the user's full name. Windows 98 & earlier do not really support the concept of mulitple users. Is there anything known to work reliably cross-platform? 20 March 2006 [NEM]: $::[tcl_platform](user) ---- [Category Porting]