Get-iPlayer - TV Index Cache

For Debian, the TV Index Cache file is $HOME/.get_iplayer/tv.cache
And Windows it is %USERPROFILE%\.get_iplayer\tv.cache
To check that the cache is being updated, you can count the lines in the file.
In Linux:

wc -l $HOME/.get_iplayer/tv.cache

In Windows:

type %USERPROFILE%\.get_iplayer\tv.cache | find /c /v ""

To refresh the cache:

get_iplayer --refresh

To refresh the cache of a specific channel:

get_iplayer --refresh --refresh-include="BBC Four"

To produce verbose output while refreshing TV index cache:

get_iplayer --verbose --refresh --refresh-include="BBC Four"

To produce verbose output while searching for a TV show:

get_iplayer --verbose eastenders

There is a bug in one of the Perl modules on Mac OS X 10.9. It's possible to make get_iplayer work on 10.9 by upgrading that module (see [manual installation info in macOS install doc in wiki])
Reference: [Square Penguin: No matching programmes listed after cache refresh]