08-16-2019
The shell concatenates $1 and 09:45 so it becomes $109:45 in the perl code, and perl sees $109
With the braces it becomes ${1}09:45
The trailing /g (g option) is nonsense here; the attempt to redo the substitution will never succeed.
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LEARN ABOUT CENTOS
pcap_set_tstamp_type
PCAP_SET_TSTAMP_TYPE(3PCAP) PCAP_SET_TSTAMP_TYPE(3PCAP)
NAME
pcap_set_tstamp_type - set the time stamp type to be used by a capture device
SYNOPSIS
#include <pcap/pcap.h>
int pcap_set_tstamp_type(pcap_t *p, int tstamp_type);
DESCRIPTION
pcap_set_tstamp_type() sets the the type of time stamp desired for packets captured on the pcap descriptor to the type specified by
tstamp_type. It must be called on a pcap descriptor created by pcap_create() that has not yet been activated by pcap_activate().
pcap_list_tstamp_types() will give a list of the time stamp types supported by a given capture device. See pcap-tstamp(7) for a list of
all the time stamp types.
RETURN VALUE
pcap_set_tstamp_type() returns 0 on success if the specified time stamp type is expected to be supported by the capture device, PCAP_WARN-
ING_TSTAMP_TYPE_NOTSUP on success if the specified time stamp type is not supported by the capture device, PCAP_ERROR_ACTIVATED if called
on a capture handle that has been activated, and PCAP_ERROR_CANTSET_TSTAMP_TYPE if the capture device doesn't support setting the time
stamp type.
SEE ALSO
pcap(3PCAP), pcap_list_tstamp_types(3PCAP), pcap_tstamp_type_name_to_val(3PCAP), pcap-tstamp(7)
21 August 2010 PCAP_SET_TSTAMP_TYPE(3PCAP)