Hi Everyone, I noticed a fair number of new Linux users have trouble with stale program caches. Users install a package from a package manager or sources and then are confused when the new package is not used. They do not realize they need to run 'bash -r'; and most don't know where to begin searching.
I think a useful feature for Bash would be to automatically update the program cache after an install. Posix does not standardize an install command (cf, http://pubs.opengroup.org/onlinepubs/009696699/utilities/contents.html), so monitoring of common commands seems like a sensible way to implement the feature. A single terminal can monitor for a regex that looks for 'make install' and perhaps other common installation commands. Multiple terminals seems like a trickier case, and could use a scheme where the source terminal broadcasts an 'update cache' message to other open terminals. Some folks will argue that a person who installs a new program or updates an existing program does not want to use the newly installed program. They will argue it to the point it displaces the common case (with the common case being a user wants to actually use the newly installed program). For users who do not want to use the newly installed program a means to disable the behavior should be provided. Jeff
