How to process only new line of tail -f command from live log file?
Hi,
I want to read a live log file line by line and considering those line which are newly added to file Below code I am using, which read line but as soon as it read new line from log file its starts processing from very first line of file.
Last edited by vbe; 10-17-2013 at 10:50 AM..
Reason: code tags + rm fancy fonts...
HI i have to copy the last 5000 lines form a log file and copy the same in the same file .overwriting the same log file.
ex: tail -5000 testfile1 > testfile2
cat testfile2
mv tesftfile2 testfile1
will produce the correct result.but i want to have this done in one line???? (4 Replies)
I have a log file that is about 1.2 million lines long and about 300MB.
we need a way to clean up this file and only keep the last few thousand lines.
if i use tail command we run our of memory as the file is too big.
I do have a key word to match on.
example, we want to keep every line... (8 Replies)
I don't quite know what I'm doing, so this simple script is proving a challenge.
Here is some pseudo code that doesn't work yet:
if tail -1 "WORKING.txt" >/dev/null | egrep "^NMBR=*" > /dev/null
then
curl -k 'http://www.myserver.com/log.cgi?input=$?'
echo "hi there"
fi
Purpose:... (3 Replies)
Hi ,
1)i want to display specific line number using tail command.
e.g. display 10 line from end.
Please help...
2)Want to display line 10 to 15 (from end)using tail command) (2 Replies)
Greetings, I'm new to this forum, also new to shell script
I have done some simple shell script before, like backup linux machine using rsync and crontab, but now I need to do some log analyzing, which is beyond my ability... so I'm going to seek for help in this forum, hope someone could give... (5 Replies)
Hello Guys,
I have created function which is as follow:
tail -f filename |grep "Key word"
output from this command
19-11-2011 21:09:15,234 - INFO Numbement - error number:result = :11
19-11-2011 21:09:15,286 - INFO Numbement - error number:result = :11
19-11-2011 21:09:15,523 - INFO... (5 Replies)
Hi,
I want to read a live log file line by line and considering those line which start from time stamp;
Below code I am using, which read line but throws an exception when comparing line that does not contain error code
tail -F /logs/COMMON-ERROR.log | while read myline; do... (2 Replies)
Hello,
I have been working on script which need to generate an alert based upon live logs. If string is found then an alert mail must triggered.
tail -n -0 -F works fine to redirect the each latest line from live logs file to grep a pattern for matching but it seems to be not working on... (7 Replies)
First month learning about the Linux terminal and it has been a challenge yet fun so far. We're learning by using a gameshell. I'm trying to display a certain line ( only allowed 1 command ) from a file only using the head or tail. I'm pretty about this answer:
head -23 history.txt | tail -1... (1 Reply)
Discussion started by: forzatekk
1 Replies
LEARN ABOUT DEBIAN
seqdiag
SEQDIAG(1) General Commands Manual SEQDIAG(1)NAME
seqdiag - generate sequence-diagram image file from spec-text file.
SYNOPSIS
seqdiag [options] file
DESCRIPTION
This manual page documents briefly the seqdiag commands.
seqdiag is generate sequence-diagram image file from spec-text file.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
included below. For a complete description, see the Info files.
--version
show program's version number and exit
-h, --help
show this help message and exit
-a, --antialias
Pass diagram image to anti-alias filter
-c FILE, --config=FILE
read configurations from FILE
-o FILE
write diagram to FILE
-f FONT, --font=FONT
use FONT to draw diagram
-T TYPE
Output diagram as TYPE format
SEE ALSO
The programs are documented fully by
http://tk0miya.bitbucket.org/seqdiag/build/html/index.html
AUTHOR
seqdiag was written by Takeshi Komiya <i.tkomiya@gmail.com>
This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others).
May 21, 2011 SEQDIAG(1)