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env -

    
    BusyBox v1.29.3 (2018-11-02 15:37:50 PDT) multi-call binary.
    Usage: env [-iu] [-] [name=value]... [PROG ARGS]
    Print the current environment or run PROG after setting up
    the specified environment
    	-, -i	Start with an empty environment
    	-u	Remove variable from the environment