tcl - How to get path of current script? -

sometimes needed current path of script. ways that?

while script being evaluated (but not while procedures being called) current script name (strictly, whatever passed source or c api equivalent, tcl_evalfile() , related) result of info script; it's highly advisable normalise absolute pathname calls cd don't change interpretation.

scripts need information tend put inside themselves:

# *good* use of [variable]… variable mylocation [file normalize [info script]] 

they can retrieve value (or things derived it) easily:

proc getresourcedirectory {} {     variable mylocation     return [file dirname $mylocation] } 

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the other common locations are:

• $::argv0 “main” script (and you're evaluating main script if it's equal info script)
• [info nameofexecutable] tcl interpreter program (typically argv[0] @ c level)
• [info library] tcl's own library scripts located
• $::tcl_pkgpath tcl list of directories packages installed
• $::auto_path tcl list of directories scripts searched (including packages! package path used initialise this.)