-c string specify shell commands to exec after connect (use with caution). The string is passed to
/bin/sh -c for execution. See the -e option if you don't have a working /bin/sh (Note that
POSIX-conformant system must have one).
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-e filename specify filename to exec after connect (use with caution). See the -c option for enhanced
functionality.
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-g gateway source-routing hop point[s], up to 8
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-G num source-routing pointer: 4, 8, 12, ...
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-h display help
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-i secs delay interval for lines sent, ports scanned
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-l listen mode, for inbound connects
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-n numeric-only IP addresses, no DNS
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-o file hex dump of traffic
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-p port local port number (port numbers can be individual or ranges: lo-hi [inclusive])
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-q seconds after EOF on stdin, wait the specified number of seconds and then quit. If seconds is
negative, wait forever.
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-b allow UDP broadcasts
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-r randomize local and remote ports
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-s addr local source address
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-t enable telnet negotiation
-u UDP mode
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-v verbose [use twice to be more verbose]
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-w secs timeout for connects and final net reads
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-z zero-I/O mode [used for scanning]
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-T type set TOS flag (type may be one of "Minimize-Delay", "Maximize-Throughput", "Maximize-
Reliability", or "Minimize-Cost".)
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