Sponsored Content
Top Forums Shell Programming and Scripting awk: switching lines and concatenating lines? Post 302408178 by Borghal on Sunday 28th of March 2010 03:02:08 PM
Old 03-28-2010
Thanks, everyone... unfortunately, I do need to preserve the order of the input file, but as I'm using it in a filter cat | awk | grep | sed ..., reading the data twice is not an option I think.

This is proving more difficult than I thought it would Smilie

Could someone explain to me please what does this line do:
(It's supposed to do what I want, but all it does is delete both concerning lines)

Code:
awk '/pause$/ {array[$1$2]=$0; next}/continue/ {if($1$2 in array) print array[$1$2] $0; delete array[$0]; next}{ print $0 }'

First it looks for a line with pause, then assigns the line it finds to array[$1$2] (why $1$2?) then it goes on to the next line to start a search for continue?

Sorry, I must look really dumb, but I can't find any good tutorial that would help me understand how it works...

Last edited by Borghal; 03-28-2010 at 04:08 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Concatenating lines and formatting.

Hi, I have a html file which is unformatted and need to concatenate the lines between each "table" statement in order to run an awk statement on it. Here is the example of the raw file: <table border="0" cellspacing="0" cellpadding="0" class="playerDetails"> def ... (3 Replies)
Discussion started by: Tonka52
3 Replies

2. Shell Programming and Scripting

Concatenating the two lines in a file

hi My requirement is i have a file with some records like this file name ::xyz a=1 b=100,200 ,300,400 ,500,600 c=700,800 d=900 i want to change my file a=1 b=100,200,300,400 c=700,800 d=900 if record starts with " , " that line should fallows the previous line.please give... (6 Replies)
Discussion started by: srivsn
6 Replies

3. Shell Programming and Scripting

Swapping or switching 2 lines using sed

I made a script that can swap info on two lines using a combination of awk and sed, but was hoping to consolidate the script to make it run faster. If found this script, but can't seem to get it to work in a bash shell. I keep getting the error "Too many {'s". Any help here would be appreciated:... (38 Replies)
Discussion started by: LaTortuga
38 Replies

4. Shell Programming and Scripting

Concatenating the lines with different pattern

Hi, I have put a similar question in one of the other threads through which I got the solution shown below but I have some more condition to add to it, hence have further queries on it. I appologies if I should be putting this with the old thread. I have a file which perform a grep on the... (1 Reply)
Discussion started by: simi28
1 Replies

5. Shell Programming and Scripting

Concatenating lines of separate files using awk or sed

For example: File 1: abc def ghi jkl mno pqr File 2: stu vwx yza bcd efg hij klm nop qrs I want the reult to be: abc def ghistu vwx yza jkl mno pqrbcd efg hij klm nop qrs (4 Replies)
Discussion started by: tamahomekarasu
4 Replies

6. Shell Programming and Scripting

Concatenating lines in bash

Hi, I'm attempting to join two lines in a file which are separated by a line break. The file contents are shown below: event_id=0 id=0_20100505210853 IFOconfig=HLV template=TaylorF2 Nlive=1000.0 Nruns=1.0 NIFO=3... (7 Replies)
Discussion started by: Supersymmetric
7 Replies

7. Shell Programming and Scripting

Concatenating lines ending with '+' using awk

Hi, I have an ASCII text file where some of the lines are ending with '+' character. I have to concatenate the next successive line with those lines having the trailing '+' char by removing that char. The below awk code has some problems to do this task: awk '{while(sub(/\+$/,"")) {... (12 Replies)
Discussion started by: royalibrahim
12 Replies

8. Shell Programming and Scripting

Switching lines

Hi I'm quite new with linux. Very simple, I need to swap every 2 lines in a file. Example INPUT: a a a b b b x x x y y y s s s t t t OUTPUT: b b b a a a y y y x x x t t t (5 Replies)
Discussion started by: hernand
5 Replies

9. Shell Programming and Scripting

Concatenating more than two lines into one based on some columns

Hi, I need to concatenate some lines in a file based on the First 4 coloumns of a file .. (For Eg.) Consider a file ... I,01,000002,0666,00000.00,000,00,000,000, ,0 I,01,000002,0667,00000.00,000,00,000,000, ,0 I,01,000002,0666,00056.10 I,01,000002,0667,00056.10 I,01,000002,0666,00001... (6 Replies)
Discussion started by: Sri3001
6 Replies

10. Shell Programming and Scripting

Concatenating the lines of a data

I have a data of 1 lac lines with the following format abcde,1,2,3,4, ,ee ,ff ,gg ,hh ,mm abcde,3,4,5,6, ,we ,qw ,as ,zx ,cf abcde,1,5,6,7, ,dd ,aa ,er .... .... (6 Replies)
Discussion started by: aravindj80
6 Replies
AMPLOT(8)						  System Administration Commands						 AMPLOT(8)

NAME
amplot - visualize the behavior of Amanda SYNOPSIS
amplot [-b] [-c] [-e] [-g] [-l] [-p] [-t T] amdump_files DESCRIPTION
Amplot reads an amdump output file that Amanda generates each run (e.g. amdump.1) and translates the information into a picture format that may be used to determine how your installation is doing and if any parameters need to be changed. Amplot also prints out amdump lines that it either does not understand or knows to be warning or error lines and a summary of the start, end and total time for each backup image. Amplot is a shell script that executes an awk program (amplot.awk) to scan the amdump output file. It then executes a gnuplot program (amplot.g) to generate the graph. The awk program is written in an enhanced version of awk, such as GNU awk (gawk(1) version 2.15 or later) or nawk(1). During execution, amplot generates a few temporary files that gnuplot uses. These files are deleted at the end of execution. See the amanda(8) man page for more details about Amanda. OPTIONS
-b Generate b/w postscript file (need -p). -c Compress amdump_files after plotting. -e Extend the X (time) axis if needed. -g Direct gnuplot output directly to the X11 display (default). -p Direct postscript output to file YYYYMMDD.ps (opposite of -g). -l Generate landscape oriented output (needs -p). -t T Set the right edge of the plot to be T hours. The amdump_files may be in various compressed formats (compress, gzip, pact, compact). INTERPRETATION
The figure is divided into a number of regions. There are titles on the top that show important statistical information about the configuration and from this execution of amdump. In the figure, the X axis is time, with 0 being the moment amdump was started. The Y axis is divided into 5 regions: QUEUES: How many backups have not been started, how many are waiting on space in the holding disk and how many have been transferred successfully to tape. %BANDWIDTH: Percentage of allowed network bandwidth in use. HOLDING DISK: The higher line depicts space allocated on the holding disk to backups in progress and completed backups waiting to be written to tape. The lower line depicts the fraction of the holding disk containing completed backups waiting to be written to tape including the file currently being written to tape. The scale is percentage of the holding disk. TAPE: Tape drive usage. %DUMPERS: Percentage of active dumpers. The idle period at the left of the graph is time amdump is asking the machines how much data they are going to dump. This process can take a while if hosts are down or it takes them a long time to generate estimates. BUGS
Reports lines it does not recognize, mainly error cases but some are legitimate lines the program needs to be taught about. SEE ALSO
amanda(8), amdump(8), gnuplot(1), compress(1), gzip(1) The Amanda Wiki: : http://wiki.zmanda.com/ AUTHORS
Olafur Gudmundsson <ogud@tis.com> Trusted Information Systems Stefan G. Weichinger <sgw@amanda.org> Amanda 3.3.3 01/10/2013 AMPLOT(8)
All times are GMT -4. The time now is 08:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy