Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Conditional grep command to search entire file
Top Forums Shell Programming and Scripting Conditional grep command to search entire file Post 302697495 by Corona688 on Thursday 6th of September 2012 11:29:19 PM
Old 09-07-2012
awk is a language which loops over all lines by default.

So, for every single line, it runs both code blocks.

Code:
awk '# NR is the total line number.
# FNR is the line number in the file.
# When they are the same, it must be in the right file.
#
# $5 is the 5th field.  When it does not contain none,
# it is considered to be a valid line, and the 12th column
# and 5th column get saved for later in the array A.
# Then it skips to the next line without executing the block below.
NR==FNR && !($5 ~ /none/) {
        A[$12]=$5 # Save ID and key for later
        next # Skip to next line
}

# When the 5th column contains none, try to look
# it up in A.  If found, set the 5th column to its contents.
# The 1 at the end of the line tells it to print every line.
($5 ~ /none/) && ($12 in A) { $5=A[$12] } 1' logfile logfile

We give awk logfile twice, so it reads the same file twice. The first time it saves names for lookup. The second time, it tries to look up entries and substitute the data you wanted before printing every line.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

search in a directory using grep command

Hi, I want to search files/directories in /temp directory which starts with letter 'a'. How can I do that using grep command. I can find out like ls -ltr a* but I want to use grep command like ls -ltr | grep ..... like that. Please help. Malay (4 Replies)
Discussion started by: malaymaru
4 Replies

2. UNIX for Dummies Questions & Answers

Search / Find / grep command ...

Is there any command, so I can retrieve all the records in a file from the first occurance of a search string, within that file? (4 Replies)
Discussion started by: videsh77
4 Replies

3. Shell Programming and Scripting

Awk+Grep Input file needs to match a column and print the entire line

I'm having problems since few days ago, and i'm not able to make it works with a simple awk+grep script (or other way to do this). For example, i have a input file1.txt: cat inputfile1.txt 218299910417 1172051195 1172070231 1172073514 1183135117 1183135118 1183135119 1281440202 ... (3 Replies)
Discussion started by: poliver
3 Replies

4. UNIX for Dummies Questions & Answers

grep question: stop search from finding entire line

Sorry for the title, I really don't know how to word this question or what to even search for. I tried "grep one match", "grep 1 match", "stop grep" on both google and here and haven't found something that helps, so here I go: I have a file that's about 1.5 million lines long, every line looks... (3 Replies)
Discussion started by: rmoakler
3 Replies

5. UNIX for Advanced & Expert Users

Advance conditional grep command

Hi guys, I need your help to use advance grep command, In my example below, I have 5 container which has some information on it, and I need to grep specific word "PLMNCode=454F00" which will not only grep the line contains that word, but I need to print the output for the whole container. Input... (6 Replies)
Discussion started by: hapalon
6 Replies

6. UNIX for Advanced & Expert Users

search the entire man pages

Could someone please tell me how to search the entire man pages? I know man -k whatever searched the description but I wanna search the entire man page. (8 Replies)
Discussion started by: cokedude
8 Replies

7. Shell Programming and Scripting

Pattern search using grep command !

Hi, I am trying to do pattern search using grep command. But i donot know what mistake i'm doing. I am not getting the expected Result. could any one please help me out? $ cat b.ksh AasdjfhB 57834B 86234B 472346B I want to print the line which is starting with either A or 8 and... (10 Replies)
Discussion started by: nikesh29
10 Replies

8. UNIX for Dummies Questions & Answers

Bashrc File - Conditional Command Execution?

Hello All, I was wondering if there is a way to execute a command in my ".bashrc" file based on how I logged into the PC? I was thinking maybe there is a way to check how the user (*myself) logged in, maybe somehow with the who command along with something else, but I'm not sure... I know I... (7 Replies)
Discussion started by: mrm5102
7 Replies

9. Shell Programming and Scripting

Search file pattern using grep command

I 'm writing a script to search particular strings from log files. The log file contains lines start with *. The file may contain many other lines start with *. I need to search a particular line from my log file. The grep command is working in command line , but when i run my script, Its printing... (7 Replies)
Discussion started by: vinus
7 Replies

10. UNIX for Beginners Questions & Answers

Search a string and display its location on the entire string and make a text file

I want to search a small string in a large string and find the locations of the string. For this I used grep "string" -ob <file name where the large string is stored>. Now this gives me the locations of that string. Now how do I store these locations in a text file. Please use CODE tags as... (7 Replies)
Discussion started by: ANKIT ROY
7 Replies

LEARN ABOUT REDHAT

wbemlogviewer

wbemlogviewer(1M)														 wbemlogviewer(1M)

NAME

       wbemlogviewer - start WBEM Log Viewer

SYNOPSIS

       /usr/sadm/bin/wbemlogviewer

       The  wbemlogviewer  utility  starts  the  WBEM  Log  Viewer graphical user interface, which enables administrators to view and maintain log
       records created by WBEM clients and providers. The WBEM Log Viewer displays a Login dialog box. You must log in as  root  or  a	user  with
       write access to the rootcimv2 namespace to view and maintain log files. Namespaces are described in wbemadmin(1M).

       Log events can have three severity levels.

	 o  Errors

	 o  Warnings

	 o  Informational

       The  WBEM  log file is created in the /var/sadm/wbem/log directory, with the name wbem_log. The first time the log file is backed up, it is
       renamed wbem_log.1, and a new wbem_log file is created. Each succeeding time the wbem_log file is backed up, the file extension	number	of
       each  backup log file is increased by 1, and the oldest backup log file is removed if the limit, which in turn is specified in the log ser-
       vice settings, on the number of logfiles is exceeded. Older backup files have higher file extension numbers than more recent backup files.

       The log file is renamed with a .1 file extension and saved when one of the following two conditions occur:

	 o  The current file reaches the specified file size limit.

	 o  A WBEM client application uses the clearLog() method in the Solaris_LogService class to clear the current log file.

	 o  A WBEM client application uses the clearLog() method in the Solaris_LogService class to clear the current log file.

	 o  A user chooses Action->Back Up Now in the Log Viewer application.

       Help is displayed in the left panel of each dialog box. Context help is not displayed in the main Log Viewer window.

       The WBEM Log Viewer is not the tool for a distributed environment. It is used for local administration.

       The WBEM Log Viewer allows you to perform the following tasks:

       View the logs

       Set properties of log fiClick Action->Log File Settings to specify log file parameters and the log file directory.

       Back up a log file      Click Action->Back Up Now to back up and close the current log file and start a new log file.

       Open historical log fileClick Action->Open Log File to open a backed-up log file.

       Delete an old log file  Open the file and then click Action->Delete Log File. You can only delete backed-up log files.

       View log record details Double-click a log entry or click View->Log Entry Details to display the details of a log record.

       Sort the logs	       Click View->Sort By to sort displayed entries. You can also click any column heading to sort the list. By  default,
			       the log entries are displayed in reverse chronological order (new logs first).

EXIT STATUS

       The wbemlogviewer utility terminates with exit status 0.

       /var/sadm/wbem/log/wbem_log

	   WBEM log file

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWwbcor 		   |
       +-----------------------------+-----------------------------+

       wbemadmin(1M), init.wbem(1M), mofcomp(1M), attributes(5)

								    3 Jan 2000							 wbemlogviewer(1M)
All times are GMT -4. The time now is 07:32 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy