Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grep a log file starting from a specific time to the end of file
Top Forums Shell Programming and Scripting Grep a log file starting from a specific time to the end of file Post 303021656 by stomp on Tuesday 14th of August 2018 02:47:15 PM
Old 08-14-2018
This does not work in AIX. It's an older date implementation there.

------ Post updated at 08:47 PM ------

I have some awk script for you, which you will need to adapt to your needs. Maybe a starting point for you to learn to get aquainted with GNU awk.


Code:
#!/usr/bin/gawk -f
#
#       Usage:
#
#       ./log_output_from "timespec" <input_file.txt
#
#               timespec is: "YYYY MM DD HH MM SS"
#
#       Example: 
#
#       ./log_output_from "2018 01 01 16 00 00" <input_file.txt
#
#
#
#
#       Sample Input data
#
#       Jul 2018 16:17:30 Some text here
#


function epoch(year,month,day,hour,min,sec) {

         return mktime(year" "month" "day" "hour" "min" "sec) 

}

BEGIN {
        months_str=("Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec")
        split(months_str, month_names, "_");
        for(name in month_names) {
                i=i+1
                month_number[month_names[i]]=i
        }
        start_seconds=mktime(start_time)

 }
# if the time is reached, no more checking, just print every line

 (time_reached==1) {
        print($0)
        next
}
{
        split($4,mytime,":")
        current_line_seconds=epoch($3,month_number[$1],$2,mytime[1],mytime[2],mytime[3]) 
        if(current_line_seconds > start_seconds) {
                time_reached = 1
                print($0)
        }
}

Last edited by stomp; 08-14-2018 at 03:53 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print starting 3rd line until end of the file.

Hi, I want to Print starting 3rd line until end of the file. Pls let me know the command. Thanks in advance. (1 Reply)
Discussion started by: smc3
1 Replies

2. Shell Programming and Scripting

Grep from a starting line till the end of the file

Hi Folks, I got to know from this forums on how to grep from a particular line say line 6 awk 'NR==6 {print;exit}' But how do i grep from line 6 till the end of the file or command output. Thanks, (3 Replies)
Discussion started by: Mr. Zer0
3 Replies

3. Shell Programming and Scripting

Grep starting from a specific position

Hello people, I'm scratch my head to find a solution to my problem, I'm absolutely sure this is very simple!!! :wall: I'm using the tcpdump to show on the screen in real time the UCP traffic: tcpdump -l -i bond1 -s 1514 -nntttt -A src or dst 192.168.1.5 and port 10000 | egrep "/51/"The output... (5 Replies)
Discussion started by: Lord Spectre
5 Replies

4. Shell Programming and Scripting

Grep the Content of a LOG File which has latest Date and Time

Hi All, Need a small help. I have a log file which keeps updating for every Minute with multiple number of lines. I just want to grep few properties which has latest Date and Time to it. How do i do it? I wanted to grep a property by name "Reloading cache with a maximum of" from the... (4 Replies)
Discussion started by: nvindraneel
4 Replies

5. Shell Programming and Scripting

need to grep contents of a file within specific time span. regex i am using is not working

Hi , I am trying to extract contents of a file between specified time stamp. but it does not seem to work. i am trying to extract output of /var/adm/messages between 15:00:00 to 15:23:59 . i have tried two regex the first one seems to kind of work. it displays some output. the second one is... (13 Replies)
Discussion started by: chidori
13 Replies

6. Shell Programming and Scripting

Grep in a log file within a time range (hour)

Hi, im trying to write a grep script that returns me the last inputs added in the last hour in the log file. Literally i have nothing yet but: grep 'Line im looking for' LOGFILE.log | tail -1 this only gives me the last input, but no necessarily from the last hour. Help Please. (4 Replies)
Discussion started by: blacksteel1988
4 Replies

7. UNIX for Dummies Questions & Answers

Add strings from one file at the end of specific lines in text file

Hello All, this is my first post so I don't know if I am doing this right. I would like to append entries from a series of strings (contained in a text file) consecutively at the end of specifically labeled lines in another file. As an example: - the file that contains the values to be... (3 Replies)
Discussion started by: gus74
3 Replies

8. Shell Programming and Scripting

Search for logs traced between specific date and time from log file

HI, I want to search for a logs which are trace between specific date and time from logs file. My logs are generated like this :- Tue Jun 18 05:00:02 EEST 2013 | file_check.sh| Message:script has files to process. Thu Jun 20 05:00:02 EEST 2013 | file_check.sh| Message:script has files to... (5 Replies)
Discussion started by: ketanraut
5 Replies

9. Shell Programming and Scripting

Extract specific line in an html file starting and ending with specific pattern to a text file

Hi This is my first post and I'm just a beginner. So please be nice to me. I have a couple of html files where a pattern beginning with "http://www.site.com" and ending with "/resource.dat" is present on every 241st line. How do I extract this to a new text file? I have tried sed -n 241,241p... (13 Replies)
Discussion started by: dejavo
13 Replies

10. UNIX for Dummies Questions & Answers

How to grep a line not starting with # from a file (there are two lines starting with # and normal)?

e.g. File name: File.txt cat File.txt Result: #INBOUND_QUEUE=FAQ1 INBOUND_QUEUE=FAQ2 I want to get the value for one which is not commented out. Thanks, (3 Replies)
Discussion started by: Tanu
3 Replies

LEARN ABOUT DEBIAN

shtool-path

SHTOOL-PATH.TMP(1)					      GNU Portable Shell Tool						SHTOOL-PATH.TMP(1)

NAME

       shtool-path - GNU shtool command dealing with shell path variables

SYNOPSIS

       shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...]

DESCRIPTION

       This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments.  It
       prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found.

OPTIONS

       The following command line options are available.

       -s, --suppress
	   Supress output. Useful to only test whether a program exists with the help of the return code.

       -r, --reverse
	   Transform a forward path to a subdirectory into a reverse path.

       -d, --dirname
	   Output the directory name of str.

       -b, --basename
	   Output the base name of str.

       -m, --magic
	   Enable advanced magic search for ""perl"" and ""cpp"".

       -p, --path path
	   Search in path. Default is to search in $PATH.

EXAMPLE

	#   shell script
	awk=`shtool path -p "${PATH}:." gawk nawk awk`
	perl=`shtool path -m perl`
	cpp=`shtool path -m cpp`
	revpath=`shtool path -r path/to/subdir`

HISTORY

       The GNU shtool path command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken
       over into GNU shtool.

SEE ALSO

       shtool(1), which(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-PATH.TMP(1)
All times are GMT -4. The time now is 04:33 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy