Linux cli command pcap_filenopcap

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command pcap_filenopcap and provides detailed information about the command pcap_filenopcap, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the pcap_filenopcap.

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NAME 🖥️ pcap_filenopcap 🖥️

get the file descriptor for a live capture

SYNOPSIS

#include <pcap/pcap.h>
int pcap_fileno(pcap_t *p);

DESCRIPTION

If p refers to a network device that was opened for a live capture using a combination of pcap_create(3PCAP) and pcap_activate(3PCAP), or using pcap_open_live(3PCAP), pcap_fileno() returns the file descriptor from which captured packets are read.

If p refers to a ``savefile’’ that was opened using functions such as pcap_open_offline(3PCAP) or pcap_fopen_offline(3PCAP), a ``dead’’ pcap_t opened using pcap_open_dead(3PCAP), or a pcap_t that was created with pcap_create() but that has not yet been activated with pcap_activate(), it returns PCAP_ERROR.

SEE ALSO

pcap(3PCAP)

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