I think my original post needs a rewrite ;/
I'm looking for a directory search tool with specific capabilities which
would fit comfortably with my work environment.
The "MATE Search Tool" comes close.
It can:
Select a starting directory.
Search for a specific extension.
Search for a keyword in file content.
It cannot:
Search ONLY the specified directory.
Return files that DO NOT contain a keyword.
"ls" can search by extension and stay in specified directory but not
include/exclude keywords.
I suspect that what I want would most likely be a command line tool.
Perhaps a script will be required. But, before reinventing the wheel, I
ask "Does an appropriate command already exist?"
[My immediate problem involves only a couple dozen files so a manual
search is feasible.]
My take away from answers so far is "A script will be required."
As I am exploring Tcl/Tk and this tool would provide input to a current
Tcl project, I will use it rather than bash.
Thank you.