Installing WAR support

karaf@trun> feature:list 
State        Name
...
[uninstalled] [2.2.9] obr        karaf-2.2.9
[uninstalled] [2.2.9] config     karaf-2.2.9
[uninstalled] [2.2.9] http       karaf-2.2.9
[uninstalled] [2.2.9] war        karaf-2.2.9
[uninstalled] [2.2.9] webconsole karaf-2.2.9
[installed  ] [2.2.9] ssh        karaf-2.2.9
...

Note: you can use the -v or --verbose switch to see exactly what Karaf does, and this will show the war, http and jetty features being installed, along with dependent bundles.

karaf@trun> feature:list
State        Name
...
[installed ] [2.2.9] http karaf-2.2.9
[installed ] [2.2.9] war  karaf-2.2.9
...

karaf@trun> list 
START LEVEL 100
ID   State         Level  Name
...
[ 32] [Active ] [ ] [ 60] geronimo-servlet_2.5_spec (1.1.2) 
[ 33] [Active ] [ ] [ 60] Apache ServiceMix :: Bundles :: 
      jetty (6.1.22.2) 
[ 34] [Active ] [ ] [ 60] OPS4J Pax Web - API (1.0.0)
[ 35] [Active ] [ ] [ 60] OPS4J Pax Web - Service SPI (1.0.0)
[ 36] [Active ] [ ] [ 60] OPS4J Pax Web - Runtime (1.0.0)
[ 37] [Active ] [ ] [ 60] OPS4J Pax Web - Jetty (1.0.0)
[ 38] [Active ] [ ] [ 60] OPS4J Pax Web - Jsp Support (1.0.0)
[ 39] [Active ] [ ] [ 60] OPS4J Pax Web - Extender - WAR (1.0.0)
[ 40] [Active ] [ ] [ 60] OPS4J Pax Web - Extender - Whiteboard
(1.0.0)
[ 42] [Active ] [ ] [ 60] OPS4J Pax Web - FileInstall Deployer 
(1.0.0)
[ 41] [Active ] [ ] [ 60] OPS4J Pax Url - war:, war-i: (1.2.4)
...

Note: the version numbers of the packages may be different in your installation.