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Full Discussion: Script to count matched string then check again from last read position
Top Forums Shell Programming and Scripting Script to count matched string then check again from last read position Post 302990154 by nms on Monday 23rd of January 2017 06:23:40 AM
Old 01-23-2017
Hi Robin,

As for knowing the last read number, i guess i can ontain that by using the current number of lines using wc or a one liner with perl
Code:
perl -lne 'END { print $. }' $LOG_FILE

but the problem i'm trying to figure out is how to let the script know how to read from the last read line onward
Code:
#File path
LOG_FILE=/IN/service_packages/DCA/tmp/diameterControlAgent_rtcg_tmnl.log
#Current lines
last_record=`perl -lne 'END { print $. }' $LOG_FILE`
#Get count
grep -c "" $LOG_FILE | sed -n "$last_record,$"p

Of course the above is not correct. The grep will still count from the beginning of the file.

The OS here is Solaris 11. SunOS 5.11 11.2 sun4v sparc sun4v
 

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LEARN ABOUT SUSE

pcap_can_set_rfmon

PCAP_CAN_SET_RFMON(3PCAP)												 PCAP_CAN_SET_RFMON(3PCAP)

NAME

       pcap_can_set_rfmon - check whether monitor mode can be set for a not-yet-activated capture handle

SYNOPSIS

       #include <pcap/pcap.h>

       int pcap_can_set_rfmon(pcap_t *p);

DESCRIPTION

       pcap_can_set_rfmon() checks whether monitor mode could be set on a capture handle when the handle is activated.

RETURN VALUE

       pcap_can_set_rfmon()  returns  0 if monitor mode could not be set, 1 if monitor mode could be set, PCAP_ERROR_NO_SUCH_DEVICE if the capture
       source specified when the handle was created doesn't exist, PCAP_ERROR_PERM_DENIED if the process doesn't have permission to check  whether
       monitor	mode  could  be  supported,  PCAP_ERROR_ACTIVATED if called on a capture handle that has been activated, or PCAP_ERROR if an error
       occurred.  If PCAP_ERROR is returned, pcap_geterr() or pcap_perror() may be called with p as an argument to  fetch  or  display	the  error
       text.

SEE ALSO

       pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), pcap_set_rfmon(3PCAP)

								    18 May 2010 					 PCAP_CAN_SET_RFMON(3PCAP)
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