Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Selecting specific variable in log file Post 303000500 by simpsa27 on Thursday 13th of July 2017 09:19:19 AM
Old 07-13-2017
Last entry in log file

Hi there

I am trying to look for a specific word in the log file and I am aware this can be done by grep for example.

As there will be multiple entries for this I want to grep the last one to enter the log... how would I go about this - would I have to use tail?

Thanks in advance

Alex

Last edited by simpsa27; 07-17-2017 at 05:49 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Urgent: selecting unique specific content of a file using shell script

Hi, I have a file whose content and format at places is as given below. print coloumn .... coloumn .... coloumn .... skip 1 line print coloumn ... skip 1 line I need to select the following : print coloumn .... coloumn .... coloumn... (2 Replies)
Discussion started by: jisha
2 Replies

2. UNIX for Dummies Questions & Answers

Help with selecting specific lines in a large file

Hello, I need to select the 3 lines above as well as below a search string, including the search string. I have been trying various combinations using sed command without any success. Can anuone help please. Thanking (2 Replies)
Discussion started by: tansha
2 Replies

3. UNIX for Dummies Questions & Answers

command for selecting specific lines from a script

I need help on following script: I need to print the lines which are in bold letters in separate file as record string("|") emp_name; string("|") emp_id; decimal("|") emp_salary; string("|") emp_status; string("\n") emp_proj; end (1 Reply)
Discussion started by: gardasgangadhar
1 Replies

4. Shell Programming and Scripting

Selecting rows with a specific criteria

Hi, I want a UNIX command that can filter out rows with certain criteria. The file is tab deliminated. Row one is just a value. Basically what I want to do is select based on the name and character at the end (o). So lets lets say i want a row that has WashU and (o) then it would print... (2 Replies)
Discussion started by: phil_heath
2 Replies

5. UNIX for Dummies Questions & Answers

Selecting specific line using awk

Hi, I would like to get the specific line from the file taking specific coloumn as reference. Thanks and Regards (1 Reply)
Discussion started by: kkarthik_kaja
1 Replies

6. Shell Programming and Scripting

Selecting specific 'id's from lines and columns using 'SED' or 'AWK'

Hello experts, I am new to this group and to 'SED' and 'AWK'. I have data (text file) with 5 columns (C_1-5) and 100s of lines (only 10 lines are shown below as an example). I have to find or select only the id numbers (C-1) of specific lines with '90' in the same line (of C_3) AND with '20' in... (6 Replies)
Discussion started by: kamskamu
6 Replies

7. Shell Programming and Scripting

selecting specific fields in a file (maybe with sed?)

Hi, I have a file with following lines: chr1 10 AC=2;AF=1.00;AN=2;DP=2;Dels=0.00;HRun=0;HaplotypeScore=0.00;MQ=23.00;MQ0=0;QD=14.33;SB=-10.01 chrX 18 AB=0.52;AC=1;AF=0.50;AN=2;DP=203;DS;Dels=0.00;HRun=0;HaplotypeScore=20.01;MQ=15.63;MQ0=85;QD=12.80;SB=-1289.58 I need to extract 4... (2 Replies)
Discussion started by: menenuh
2 Replies

8. Shell Programming and Scripting

Selecting Specific Columns and Insert the delimiter TAB

Hi, I am writing a Perl Script for the below : I have a data file that consists of the header information which is 231 Lines and the footer information as 4 lines. The total number of line including the header and footer 1.2 Million with Pipe Delimited file. For example: Header Information:... (4 Replies)
Discussion started by: filter
4 Replies

9. Shell Programming and Scripting

selecting and deleting specific lines with condition

I have a set of data as below: The first field, $1 represent "|". The $3 (3rd field) and $6 (6th field) in my data file represent "number-molecule" which has arrangement as below: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 ... (9 Replies)
Discussion started by: vjramana
9 Replies

10. Shell Programming and Scripting

Selecting latest entry in the log file

Hi there I am trying to write a script where I will need to look for a specific word in the log file and I am aware this can be done by grep for example. As there will be multiple entries for this I want to grep the last one to enter the log... how would I go about this - would I have to use... (5 Replies)
Discussion started by: simpsa27
5 Replies
grep-changelog(1)					      General Commands Manual						 grep-changelog(1)

NAME
grep-changelog - print ChangeLog entries matching criteria SYNOPSIS
grep-changelog [options] [CHANGELOG...] DESCRIPTION
grep-changelog searches the named CHANGELOGs (by default files matching the regular expressions ChangeLog and ChangeLog.[0-9]+) for entries matching the specified criteria. At least one option or file must be specified. This program is distributed with GNU Emacs. OPTIONS
The program accepts unambiguous abbreviations for option names. --author=AUTHOR Print entries whose author matches regular expression AUTHOR. --text=TEXT Print entries whose text matches regular expression TEXT. --exclude=TEXT Exclude entries matching regular expression TEXT. --from-date=YYYY-MM-DD Only consider entries made on or after the given date. ChangeLog date entries not in the "YYYY-MM-DD" format are never matched. --to-date=YYYY-MM-DD Only consider entries made on or before the given date. --rcs-log Print output in a format suitable for RCS log entries. This format removes author lines, leading spaces, and file names. --with-date In RCS log format, print short dates. --reverse Show matches in reverse order. --version Display version information. --help Display basic usage information. COPYING
Copyright (C) 2008, 2009 Free Software Foundation, Inc. Permission is granted to make and distribute verbatim copies of this document provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this document under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this document into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. grep-changelog(1)
All times are GMT -4. The time now is 12:41 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy