Description:
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The snmpcmd(1) man page lists a lot of options, some of them should
probably be better done in PHP but some, like -Pc or -Cc could be
necessary in rare cases. An alternative would be to expose the "-Y"
function netsnmp_config_remember().

Of course it should be documented that these function alter the
global behaviour and not just the current session. Also that they
are Net-SNMP specific.

Test script:
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Expected result:
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-

Actual result:
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-