On Unix, a file called $HOME/.tclshrc , and on Windows, a file called $HOME\tclshrc.tcl , will be read by [tclsh] when it is started interactively. Note that it is NOT read if tclsh is started with a command file. Please feel free to add examples of useful things one can do with this facility. 1. perform a [package require] on one of the [pure-tcl readline2] type packages, providing a different command line history functionality. 1. Set [tcl_prompt1] or [tcl_prompt2] 1. Create useful [interp aliases]. 1. Customize [proc] [unknown] to, e.g., use [expr] as a last resort so that tclsh can be used as a calculator. 1. I often need to use the Tclx package, so I place the package require statement in the .tclshrc file 1. I placed this line in the .tclshrc to remind myself which version the shell is (there are at least two versions at work): puts "TCL $tcl_patchLevel\n" ---- '''[Lavin] - 2009-12-24 12:58:52''' How can I invoke tclsh for interactive execution, but specify file(s) to be sourced before issuing the first command prompt? TIA, -- Mark [AMG]: Put "`source whatever.tcl`" in your .[tclshrc]. Or put the code you'd like to be executed directly in .tclshrc. ''[MGS]'' [[2010-05-14]]: Maybe [prompt] can help you? ---- See also [The RC File]. <> Desktop