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I'm getting conflicting information from the manuals, especially regarding kmod and modprobe. All of these programs come together in the same package, but are any f these backends or frontends? Does modprobe call insmod and rmmod? Does depmod call modinfo when building a list of dependencies? Is kmod used as a backend by insmod and rmmod?

From kmod.8.man:

 kmod is a multi-call binary which implements the programs used to control Linux Kernel modules. Most users will only run it using its other names.
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Most of those are just symlinks to kmod. kmod then checks the name it's invoked with -- probably with argv[0] (never looked at the source to see for sure) to determine its behavior.

lrwxrwxrwx 1 root root 9 Aug 26 2012 depmod -> /bin/kmod lrwxrwxrwx 1 root root 9 Aug 26 2012 insmod -> /bin/kmod lrwxrwxrwx 1 root root 9 Aug 26 2012 lsmod -> /bin/kmod lrwxrwxrwx 1 root root 9 Aug 26 2012 modinfo -> /bin/kmod lrwxrwxrwx 1 root root 9 Aug 26 2012 modprobe -> /bin/kmod lrwxrwxrwx 1 root root 9 Aug 26 2012 rmmod -> /bin/kmod
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