-'f' - Will call oom_kill to kill a memory hog process.
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-'e' - Send a SIGTERM to all processes, except for init.
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-'g' - Used by kgdb on ppc platforms.
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-'i' - Send a SIGKILL to all processes, except for init.
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-'h' - Will display help (actually any other key than those listed
- above will display help. but 'h' is easy to remember :-)
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