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Forum Discussion

Jesse_Mauntel_4's avatar
Jesse_Mauntel_4
Icon for Nimbostratus rankNimbostratus
Nov 26, 2014

List all assigned variables

Is there a way within an iRule to list all of the assigned variables and their values without knowing the names of the variables? I'm looking for something like the 'set' or 'env' commands in bash. ...
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VernonWells's avatar
VernonWells
Icon for Employee rankEmployee
Nov 29, 2014

The tcl command ">http://www.tcl.tk/man/tcl8.0/TclCmd/info.htm" target="_blank">info vars will return a list of all variables that are visible in context of that command's evaluation. This doesn't give a 'name = value' set, providing rather a Tcl list of names, but before diving into how to accomplish name/value pair listing, it might be better to understand why you are seeking to do this. Presumably it is to facilitate testing or debugging in some fashion. Are you attempting to see whether a particular variable is defined? For that, ">http://www.tcl.tk/man/tcl8.0/TclCmd/info.htm" target="_blank">info exists is a better choice.

 

VernonWells's avatar
VernonWells
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Nov 29, 2014
Sorry. The DevCentral markup system, for some reason, mangled the actual hrefs. The Tcl 'info' command is documented here: http://www.tcl.tk/man/tcl8.0/TclCmd/info.htm. The command that dumps the variable names is 'info vars'. The command to check whether a variable exists is 'info exists'.