Standard input is empty

tcl_platform(byteOrder)     = littleEndian
tcl_platform(engine)        = Tcl
tcl_platform(machine)       = x86_64
tcl_platform(os)            = Linux
tcl_platform(osVersion)     = 3.16.0-4-amd64
tcl_platform(pathSeparator) = :
tcl_platform(platform)      = unix
tcl_platform(pointerSize)   = 8
tcl_platform(threaded)      = 1
tcl_platform(user)          = 
tcl_platform(wordSize)      = 8
PA:8.6.6
VA:tcl_rcFileName tcl_version argv0 argv tcl_interactive auto_path auto_index env tcl_pkgPath tcl_patchLevel argc tcl_library tcl_platform
PWD:/home/GPHFo4
PACK:http tcl::tommath TclOO BLT tcltest opt msgcat zlib Tcl platform Tk