We have a log file which has 16 million row. We want to read all the lines appended from the last time we read using sed command
I can store this last line line so I can give replace that with START_LINE in my next read. The problem is wc -l which would give me the total lines in the file which I can store it as LAST_LINE takes time to read this ever growing huge file Is there a faster way to implement this?
Last edited by Scott; 11-13-2013 at 02:11 PM..
Reason: Please use code tags
We have a third party tool in UNIX to kick off a 'file copy' job based on a file existance. If a specific file exists in an UNIX directory, another process should start copy the file into another system for further processing. The issue is, the copy job is starting as soon as the file exists in... (6 Replies)
my /etc/.osm file is growing rapidly and logging large amounts of activity. Can anyone tell me what this file is for and what types of information is logged in this file.
Thanks in advance for your help!! (1 Reply)
I need to find the file that is growing in the mount. Say yesterday the utilised space was 95% but today that is 96%. How do i find the file that is growing in size. Have checked the same with du/df options but was not able to find much.
Please suggest the best possible option. (3 Replies)
I have log file that is incremented every second and is rather big. I need monitor error in this file. I do not want to parse it all every time.
I want parse it first time then remember last position (as byte for example)
All consequent parsing I want to start from last saved position to the... (3 Replies)
Hi ,
I have incremental file FILE1 which locate in directory /asd/ This directory contains log files whose name entries goes in FILE1
how to make shell scripts for following condition
shell script executes on
day1
FILE1 entry ---->
1.log
... (3 Replies)
Hi gurus
Im a newbie in solaris..I need to extend file system space in solaris 10 which is using SVM..I have a file system /pin02 which is 93% full n needs to be extended..only 3.6 gb avail space left..the file system is not mirrored...normal ufs file system only..can u please tel me t... (6 Replies)
Hi All,
I want to check if one my log file is updating properly, how can I achieve it.
The approach I am trying is to get the file size at two different interval and than comparing it eg :
$ ls -ltr | tail -1 | awk '{print $5}'
20480 (7 Replies)
Hi,
I have a log file (log.txt) that which contains lines of date/time.
I need to create a script to extract a CSV file (out.csv) that gets all the sequential times (with only 1 minute difference) together by stating the start time and end time of this period.
Sample log file (log.txt)
... (7 Replies)
Discussion started by: Mr.Zizo
7 Replies
LEARN ABOUT MOJAVE
ipl
IPL(4) Kernel Interfaces Manual IPL(4)NAME
ipl - IP packet log device
DESCRIPTION
The ipl pseudo device's purpose is to provide an easy way to gather packet headers of packets you wish to log. If a packet header is to be
logged, the entire header is logged (including any IP options - TCP/UDP options are not included when it calculates header size) or not at
all. The packet contents is also logged after the header.
Prepending every packet header logged is a structure containing information relevant to the packet following and why it was logged. The
structure's format is as follows:
struct ipl_ci {
u_long sec; /* time when the packet was logged */
u_long usec;
u_long plen; /* length of packet data logged */
u_short hlen; /* length of headers logged */
u_short rule; /* rule number (for log ...) or 0 if result = log */
u_long flags:24; /* XXX FIXME do we care about the extra bytes? */
#if (defined(OpenBSD) && (OpenBSD <= 1991011) && (OpenBSD >= 199606))
u_long filler:8; /* XXX FIXME do we care? */
u_char ifname[IFNAMSIZ];
#else
u_long unit:8;
u_char ifname[4];
#endif
};
In the case of the header causing the buffer to finish on a non-32bit
boundary, padding will be `appended' to ensure that the next log entry
is aligned to a 32bit boundary.
If the packet contents is more then 128 bytes, then only 128 bytes of the
packet contents is logged. Should the packet contents finish on a non-32bit
boundary, then the last few bytes are not logged to ensure the log entry
is aligned to a 32bit boundary.
ipl is a read-only (sequential) character pseudo-device.
The ioctls which are loaded with this device can be found under ipf(4).
The only ioctl which is used for logging and doesn't affect the filter is:
ioctl(fd, SIOCIPFFB, int *)
This ioctl flushes the log buffer and returns the number of bytes flushed.
There is currently no support for non-blocking IO with this device, meaning all read operations should be considered blocking in nature (if
there is no data to read, it will sleep until some is made available).
SEE ALSO ipf(4)BUGS
Packet headers are dropped when the internal buffer (static size) fills.
FILES
/dev/ipl0
IPL(4)