You could read the log in real time with tail -f if that helps. Beyond this, you may need to keep and old version and compare them. Using diff can be awkward because it adds editing messages if you are to shovel the output into ed so perhaps you would be better to count the lines in your saved version and then get extra lines from the current file, something like:-
I've added the temporary log file so that messages can still be added to the main logfile as you are working on it without it skewing the output, so it givers you a fixed reference point.
I know that Unix is different from windows in that it needs more manual configuring but how do I get Solaris 8 (Intel version) to recognize my floppy drive and cd-rom??
I mean does it automatically detect the drives at startup and I have to mount them or do I have to create the drives somehow and... (1 Reply)
Hello all,
first of all, I apologise if I may ask stupid or obvious questions, but I'm new to UNIX and I think I need a little bit of help before I start gearing up :)
Anyway, I have installed a Solaris 8 on a Sun machine, and it has 2 physical disks in it. However, it seems that it is only... (7 Replies)
Hi. You may know how to detect when a interruption succeeded programming in C. Just like receiving a signal without blocking. Knowing when it was a keystroke (IRQ 2), or a mouse movement (12), or a disk access, etc. and getting actually for example the letter typed.
Thanks a lot. (7 Replies)
Hello,
I'd like to handle incoming (uploaded) files from a shell script, ideally without busy polling / waiting (e.g. running a cron task every 15'). Is there a command that would just sleep until a new entry has been created in a directory, allowing scripts such as the following:
while... (9 Replies)
Hi All ,
I need a script to find errors in a particular and in a particular path
Actually in my logs i`ve so many kinds of errors(i can even say as 100 types also).if i run the script i need to know the error (some errors can aviod )
so finally the script o/p should be a numeric... (3 Replies)
Hi,
I will name folders this way : DD-MM-YYYY (07-06-2011 for today).
DATE=`date +%d-%m-%Y`
mkdir $DATE
They will contain a backup of the day.
I want, in my backup script, add a command that will automatically delete folders that are a week old (in this case, when performing the backup of... (7 Replies)
How can view log messages between two time frame from /var/log/message or any type of log files.
when logfiles are very big and especially many messages with in few minutes, I would like to display log messages between 5 minute interval.
Could you pls give me the command? (1 Reply)
Hello world,
One of the servers, a Fedora one,rebooted today (Luckily, a testbox).
I tried to get the reason the server rebooted. After going through the messages, I think that the log entries just before and after reboot are missing.
Please below: (****** is the server name, for privacy... (0 Replies)
is there a way to efficiently monitor logfiles that do not have a date or time format? i have several logs on several different servers that need to be monitored. but i realized writing a script for this would be very complex and time consuming giving the variety of things i need to check for i.e.... (2 Replies)
Redirecting log files to null writing junk into log files.
i have log files which created from below command
exec <processname> >$logfile
but when it reaches some size i am redirecting to null while process is running like
>$logfile
manually but after that it writes some junk into... (7 Replies)
Discussion started by: greenworld123
7 Replies
LEARN ABOUT DEBIAN
plan9-tail
TAIL(1) General Commands Manual TAIL(1)NAME
tail - deliver the last part of a file
SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ]
tail [ -fr ] [ -n nlines ] [ -c nbytes ] [ file ]
DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied.
Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K
blocks or bytes, according to the appended flag or Default is -10l (ten ell).
The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to
keep watch and print further data as it appears.
The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed.
EXAMPLES
tail file
Print the last 10 lines of a file.
tail +0f file
Print a file, and continue to watch data accumulate as it grows.
sed 10q file
Print the first 10 lines of a file.
SOURCE
/src/cmd/tail.c
BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length.
According to custom, option +number counts lines from 1, and counts blocks and bytes from 0.
Tail is ignorant of UTF.
TAIL(1)