04-30-2020
Could you store a 'previous last line' value somewhere to use between runs? That way you could:-
- Copy the log file to a temporary directory (to get a fixed file to work with)
- Read the 'previous last line' value from your stored location
- Count the lines in your copied file.
- If the count is lower, you have rotated the log file, so set the 'previous last line' value to zero to read the whole file.
- If the count was larger, read from the 'previous last line' value to the end of the file looking for the error message being logged.
- Store the new 'last line' value in a file somewhere for the next run.
- Tidy up your temporary file/directory.
Would that logic work for you?
Let us know if that helps, is totally wrong or if you get stuck.
I hope that this helps,
Robin
This User Gave Thanks to rbatte1 For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
Can any one please assist how to scirpt it:
Every day a new log file is create and I want to process only the one generated yesterday and get the data of column 3 and 6.
For example today's date is 24 then I want to get the data of log file created on 23rd.
Log Files in... (7 Replies)
Discussion started by: sureshcisco
7 Replies
2. Shell Programming and Scripting
HI All,
I have a log file where the logs will be in the format as given below:
2011-05-25 02:32:51 INFO PROCESS STARTING
2011-05-25 02:32:52 INFO PROCESS STARTED
.
.
.
I want to retrieve only the logs which are less than 5 mins older than current time using grep... (3 Replies)
Discussion started by: rvhg16
3 Replies
3. Shell Programming and Scripting
Dear Guru's
I've a requirment to grep for a string in series of log files that are getting generated almost every minute.
I'm looking to schedule a script every 15 mountes,in order to check if the error string has been generated in any of the log files generated in last 15 minutes.
Please... (3 Replies)
Discussion started by: rajivatnova
3 Replies
4. Shell Programming and Scripting
RHEL 5.8
In the directory /u03/pkms/app_logs I have several hundreds of log files as shown below.
$ pwd
/u03/pkms/app_logs
$ ls -alrt *.log | tail -50
-rw-r----- 1 oracle dba 9439232 May 4 13:57 mvtpcem_1_722892404_94157.log
-rw-r----- 1 oracle dba 9227264 May 4 13:57... (8 Replies)
Discussion started by: kraljic
8 Replies
5. Shell Programming and Scripting
I have below command, which i use for checking last two hours log file, but i want to check 30 minutes log and discard old log, only match current time with last 30 minutes. Command i am using. This below attach log file format is for this week, but sometime it got change in time of log, so i need... (6 Replies)
Discussion started by: learnbash
6 Replies
6. Shell Programming and Scripting
Team,
I have prepared a script which I run from my remote machine(Jump-box)server
Below is the script
FILEDATE=`date +%F`
LOGFILE=/home/abc/scripts/xyz.$FILEDATE.log
find /home/abc/scripts/xyz.*.log -type f -mtime -3 -delete
touch $LOGFILE
exec 1>$LOGFILE 2>&1
#healthcheck batch runs... (1 Reply)
Discussion started by: whizkidash
1 Replies
7. Web Development
Apache Web Server:
how to log http 404 error to a separate log file and i do not want to log in access.log
please advice. (2 Replies)
Discussion started by: raghur77
2 Replies
8. Shell Programming and Scripting
I have newbie,
which i use for checking last one hours log file,
but i want to check 2 minutes log and discard old log, only match current time with last 2 minutes.
Ex log.
2018-07-03 20:09:17
2018-07-03 20:05:17
2018-07-03 20:05:18
2018-07-03 20:05:20
2018-07-03 20:06:22
2018-07-03... (5 Replies)
Discussion started by: ooilinlove
5 Replies
9. Shell Programming and Scripting
Hi all,
System Ubuntu 16.04.3 LTS
i have the following log
INFO 2019-02-07 15:13:31,099 module.py:700] default: "POST /join/8550614e-3e94-4fa5-9ab2-135eefa69c1b HTTP/1.0" 500 2042
INFO 2019-02-07 15:13:31,569 module.py:700] default: "POST /join/6cb9c452-dcb1-45f3-bcca-e33f5d450105... (15 Replies)
Discussion started by: charli1
15 Replies
10. UNIX for Beginners Questions & Answers
Hi,
I have written a script with several variables derived from here documents. However, when I run the following code, the exit status becomes 1:
BMC_ACEs="Rich"
read -r -d '' BMC_ACL <<EOF
###
### ACL Rack01-BMCMgmt_IN
###
$BMC_ACEs
EOF
If I then type echo $?, it displays a 1. ... (4 Replies)
Discussion started by: richmaxw
4 Replies
LEARN ABOUT OSF1
defragcron
defragcron(8) System Manager's Manual defragcron(8)
NAME
defragcron - Schedules AdvFS file domains for defragmenting
SYNOPSIS
/usr/sbin/defragcron [-p] [-q] [-t nnn] [-b hh:mm] [-a hh:mm] [-l pathname] [domain...]
/usr/sbin/defragcron [-p] [-q] [-t nnn] [-T mm] [-l pathname] [domain...]
OPTIONS
Specifies that the domains are to be defragmented in parallel. If not specified, the default is to serially defragment the domains. Sup-
press informational messages. If not specified, the default is to produce informational messages. Specifies the aggregate I/O performance
threshold, the point at which the domain should be defragmented. A number from 1-100. If not specified, the default is to always defrag-
ment the domain.
The performance threshold is based on the value returned by the defragment -nv command. If this value is lower than or equal to the
value specified here, the domain is defragmented. If specified, the utility will not run before this time and will return an error
if the time is not yet reached. Specify time values using the 24-hour clock. If not specified, the default time is 01:00. If
specified, the utility will not run after this time, and will return an error if the time has been passed. Specify time values
using the 24-hour clock. If not specified, the default time is 05:00. Specifies an exact time interval, in minutes, for the
defragment utility to run. If not specified, there is no default.
If you use this option, its action overrides the before and after time checking of the -a and -b options. Specify the -l option to
direct messages to log files in the specified directory. One log file is generated for nonspecific messages and separate log files
are generated for each domain that is defragmented.
If the option is not specified, the default action is to not produce log files for the messages (which then are directed to the
standard output device).
If the option is specified, you also must specify a pathname for the directory into which the log files are to be written. The
default directory, as specified in the root crontab entry, is /usr/var/defragcron/.
The names of the log files have the following format: domain1.log, domain2.log, ..., and so on, one file for each active domain,
plus a file, defragcron.log for the nonspecific messages. If you have named a domain defragcron, messages for that domain are writ-
ten to the nonspecific messages in the defragcron.log file.
OPERANDS
Specifies one or more AdvFS file domains. If no domains are specified, the default action is for the utility to defragment all active
AdvFS file domains.
DESCRIPTION
The defragcron utility runs the defragment utility to a schedule that you specify on all active AdvFS file domains or on the active domains
you specify.
The typical use of this utility is to run it as a command in the cron daemon. See cron(8).
Unless the domain is listed in the comand line, the utility does not attempt to defragment inactive file domains (those which have no
mounted filesets). It can try to defragment file domains that have some mounted and some unmounted filesets. In this case, the utility
fails.
RESTRICTIONS
You must have root user privileges to run this utility.
All restrictions for the defragment utility are in effect for the defragcron utility.
EXIT STATUS
The utility returns a 0 (zero) on success. Otherwise, it returns a 1 and an error diagnostic.
EXAMPLES
The following example defragments all active domains that have an aggregate I/O performance threshold less than or equal to 60 for an
interval of 240 minutes: # /usr/sbin/defragcon -q -t 60 -T 240
FILES
The command's path. The path of the defragment utility.
SEE ALSO
Commands: crontab(1), cron(8), defragment(8)
defragcron(8)