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kmod.md

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+# kmod
+
+Implements `lsmod`, `insmod`, `rmmod`, and other tools.
+
+The other tools are just symlinks to it.
+
+## module-init-tools
+
+Name of a predecessor set of tools.
+
+## package version
+
+From any of the commands, `--version`:
+
+    modinfo --version
+
+Package that provides utilities
+
+## lsmod
+
+List loaded kernel modules.
+
+Info is taken from `/proc/modules`
+
+    lsmod
+
+Sample output:
+
+    cfg80211              175574  2 rtlwifi,mac80211
+    ^^^^^^^^              ^^^^^^  ^ ^^^^^^^,^^^^^^^^
+    1                     2       3 4       5
+
+1.  Name.
+
+2.  Size.
+
+3.  Number of running instances.
+
+	If negative, TODO
+
+4.  Depends on 1.
+
+5.  Depends on 2.
+
+To get more info:
+
+    cat /proc/modules
+
+Also contains two more columns:
+
+- status: Live, Loading or Unloading
+- memory offset: 0x129b0000
+
+## modinfo
+
+Get info about a module by filename or by module name:
+
+    modinfo ./a.ko
+    modinfo a
+
+TODO must take a `.ko` file?
+
+## insmod
+
+    sudo insmod hello.ko
+
+Loads the module.
+
+Does not check for dependencies.
+
+## rmmod
+
+Remove a module. Takes either the module name or the `.ko` file:
+
+    sudo rmmod hello
+    sudo rmmod ./hello.ko
+
+## modprobe
+
+List available modules relative path to `/lib/modules/VERSION/`:
+
+    sudo modprobe -l
+
+Load the module:
+
+    sudo modprobe $m
+
+Checks for dependencies.
+
+Load module under different name to avoid conflicts:
+
+    sudo modprobe vmhgfs -o vm_hgfs
+
+Remove module:
+
+    sudo modprobe -r $m
+
+Check if dependencies are OK:
+
+    sudo depmod -a
+
+Get info about given `.ko` module file:
+
+    m=a
+    sudo rmmod $m