I could not understand this line of code can u please explain me what exactly it is meant for and how is it happening:
Quote:
Originally Posted by man nawk
NR ordinal number of the current record
FNR ordinal number of the current record in the current file
'FNR==NR' will be true for the FIRST file to be processed
'arr' is an associative array indexed by the values of fields '3' and '4' and having the content of cancatenated value of fields '1' and '2'.
When processing the FIRST file specified on the command line we're building the hash/associative array used later on in the script for doing the 'lookups'.
Look into 'man nawk' for the details on the associative arrays.
Hi.
I'm having trouble using gawk within a bash script and I can't figure out why.
I have a command that takes in a data file with two columns, the first one numbers and the second words. My code takes each line, and prints the word its corresponding number of times. The code works from the... (2 Replies)
Hi all
I’m looking for a perl equivalent to this command string
I need to imbed this in a existing perl script
cat file1 | gawk -F"|" '{print $1","$2,",",$3,",",$11 >> "new-file"}'
Thank you (4 Replies)
Hi,
I am using the script to print the portion of the file containing a particular string. But it is giving error "For Reading (No such file or directory). I am using cygwin as unix simulator.
cat TT35*.log | gawk -v search="12345678" '
/mSOriginating /,/disconnectingParty/ {
... (1 Reply)
Hi,
I have a situation. in a particular file , from the 9th column i have to match a particular pattern . i want a second file which is made by excluding them.
I wrote a code like this.
gawk '$9~/^(SPI|OTC|SAX)$/' /home/ceh1/ceh_prod/plx_"$mydate"_old.tsv >>... (1 Reply)
Someone help please. I tried to do it with findstr but I couldn't, so now I'm trying to output the following numbers from this text file with gawk (what I need is in bold down below):
Analyzing pool.ntp.org (1 of 1)...
delayoffset from local clock
Stratum: 2
Warning:
Reverse name... (18 Replies)
Hi All,
I have a doubt with gawk. I have a shell script "cleanup" which calls a gawk script "cleanawk" in it.
we have two unix servers epsun532 and wpsun712. So i tested the script in both the environments.
In epsun532 while calling the gawk script i just mentioned something like this
... (1 Reply)
I am trying to use gawk to search a file and put the second value of the string into a string.
gawk -F: '$1~/CXFR/ {print $2}' go.dat
Below is the file 'go.dat'
====================
HOME :/
CTMP :/tmp
CUTL :/u/rdiiulio/bin
CWRK :/u/work
CXFR :/u/xfer
... (1 Reply)
I am trying to use gawk to search a file and put the second value of the string into a string.
gawk -F: '$1~/CXFR/ {print $2}' go.dat
go.dat
====================
HOME :/
CTMP :/tmp
CUTL :/u/rdiiulio/bin
CWRK :/u/work
CXFR :/u/xfer
... (4 Replies)
Hello,
This is a problem I've worked on a while and can't figure out.
There is a file.txt
..some stuff..
]
]
..some stuff..
The Awk program is trying to extract the year portion of the birth and death ("98: and "2nd C.") using the below technique
#!/bin/awk
@include... (5 Replies)
Discussion started by: Mid Ocean
5 Replies
LEARN ABOUT REDHAT
amplot
AMPLOT(8) System Manager's Manual AMPLOT(8)NAME
amplot - visualize the behavior of Amanda
SYNOPSIS
amplot [ -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 version 2.15 or later)
or nawk.
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 -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.
-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 configu-
ration 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.
AUTHOR
Olafur Gudmundsson ogud@tis.com
Trusted Information Systems
formerly at University of Maryland, College Park
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), gawk(1), nawk(1), awk(1), gnuplot(1), sh(1), compress(1), gzip(1)4th Berkeley DistributionAMPLOT(8)