Extract lines if string found from last 30 min only Post: 303030806

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Top Forums UNIX for Beginners Questions & Answers Extract lines if string found from last 30 min only Post 303030806 by Don Cragun on Saturday 16th of February 2019 06:18:35 AM

02-16-2019

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Quote:

Originally Posted by nezabudka

Thank you very much for the comments. All the above I be taken into account for the future.
And in the last remark. This is my carelessness and bug. The order of the expressions was violated.
Apparently I wanted to make something like that.

Code:

        if ($7 == "PM") a[1]+=12
        if (a[1] == 24) a[1] = "00"
        $5 = a[1] ":" a[2] ":" a[3]

... ... ...
Thank you for teaching, it was very informative.

Hi nezabudka,
I'm afraid the above code still doesn't work for anything that started with a[1]==12. If you start with 12 AM on a 12 hour clock you should end up with hour 00 on a 24 hour clock (the above code ends up with hour 12) and if you start with 12 PM on a 12 hour clock you should end up with hour 12 on a 24 hour clock (the above code ends up with hour 00).

If you don't like the code I suggested in post #9 or either of the suggestions I made in post #12 you could also try:

Code:

        $5 = (($7 == "PM") ? a[1] + 12 * (a[1] != 12) : (a[1] == 12) ? "00" : a[1]) ":" a[2] ":" a[3]

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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)

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