Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Perl for comparing numbers from previous lines in a file?
Top Forums Shell Programming and Scripting Perl for comparing numbers from previous lines in a file? Post 302876309 by lucshi09 on Friday 22nd of November 2013 07:33:40 PM
Old 11-22-2013
This works great... thanks Chubler!!
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

comparing numbers in a file

Hello, I'm searching for a quick method to read numeric values from a file or a defined variable and identifying the largest number. For instance if the following numbers are in a file or defined to a variable: 09192007 09202007 09182007 09172007 09162007 What "short" method could be used to... (7 Replies)
Discussion started by: dusk2dawn
7 Replies

2. Shell Programming and Scripting

Perl how to move pointer to previous line in a txt file?

I have a text file that has blocks of text. Each block starts with ### and ends with End_###. I wrote a perl script to search a string from line 2 (ignore any line starts with ###) of each block if matched, need to print that whole block. According to the input file in below, it will print... (5 Replies)
Discussion started by: tqlam
5 Replies

3. Shell Programming and Scripting

Search for a pattern in a file and print previous lines from a particular point

Hi, I am new to ksh scripting and I have a problem. I have a file in which I have to search for a particular pattern say 'a' then from that line I need to search for another pattern say 'b' in the previous lines and thne print the file from pattern 'b' till the end of file. For eg: ... (2 Replies)
Discussion started by: umaislearning
2 Replies

4. Shell Programming and Scripting

comparing lines in file

i have 2 files and i want to compare i currently cat the files and awk print $1, $2 and doing if file1=file2 then fail, else exit 0 what i want to do is compare values, with column 1 being a reference i want to compare line by line and then still be able to do if then statement to see if worked... (1 Reply)
Discussion started by: sigh2010
1 Replies

5. Shell Programming and Scripting

Finding lines matching the Pattern and their previous lines in a file

Hi, I am trying to locate the occurences of certain pattern like 'Possible network disconnect' in a text file. I can get the actual lines matching the pttern using: grep -w 'Possible network disconnect' file_name. But I am more interested in getting the timing of these events which are... (7 Replies)
Discussion started by: sagarparadkar
7 Replies

6. Shell Programming and Scripting

ksh comparing current and previous lines

Hi, I am currently trying to work out how to compare one line with the last line I have read in via ksh. I have a file which has sorted output from a previous sort command so all the lines are in order already and the file would look something like show below. Each line has a name and a time... (5 Replies)
Discussion started by: paulie
5 Replies

7. Shell Programming and Scripting

grep lines from the previous day's file

I have files called printfile.log.1121, printfile.log.1122, etc where 1121 and 1122 are the date of the file creation. The file contents are like: ================================================================================ User = d_prod Env = d_prod Dir =... (3 Replies)
Discussion started by: Daniel Gate
3 Replies

8. Linux

Perl program to print previous set of lines once a pattern is matched

Hi all, I have a text data file. My aim here is to find line called *FIELD* AV for every record and print lines after that till *FIELD* RF. But here I want first 3 to four lines for very record as well. FIELD AV is some where in between for very record. SO I am not sure how to retrieve lines in... (2 Replies)
Discussion started by: kaav06
2 Replies

9. Shell Programming and Scripting

Remove previous line if next & previous lines have same 4th character.

I want to remove commands having no output. In below text file. bash-3.2$ cat abc_do_it.txt grpg10so>show trunk group all status grpg11so>show trunk group all status grpg12so>show trunk group all status GCPKNYAIGT73IMO 1440 1345 0 0 94 0 0 INSERVICE 93% 0%... (4 Replies)
Discussion started by: Raza Ali
4 Replies

10. Shell Programming and Scripting

Comparing two files with numbers and taking difference in third file

Hi All, I have two files in the following format, with numbers being defined under columns(described by a set of headers) and rows(again defined by a set of identifiers) 2013 2013 Make200 Make201 Merc BMW Jpur Del ... (9 Replies)
Discussion started by: dev.devil.1983
9 Replies

LEARN ABOUT DEBIAN

weatherrc

weatherrc(5)							File Formats Manual						      weatherrc(5)

NAME

       weatherrc - configuration file format for the weather(1) utility

DESCRIPTION

       The  weatherrc  file  format is intended to specify a set of aliases by which to group URIs for METAR station conditions and alert/forecast
       zones, but other command-line options and flags for the weather utility can be specified as well.  The file is organized as  an	INI-format
       config,	with  the  alias name in [] brackets and the associated parameter/value pairs on following lines.  Parameters and their values are
       separated by = or : characters.	Multi-word values do not need quoting.	These parameters are supported...

       alert  include local alert notices (possible values are False and True or 0 and 1)

       atypes list of alert notification types to display (ex: tornado_warning,urgent_weather_message)

       cache  control all caching (possible values are False and True or 0 and 1)

       cache_data
	      control retrieved data caching (possible values are False and True or 0 and 1)

       cache_search
	      control search result caching (possible values are False and True or 0 and 1)

       cacheage
	      duration in seconds to refresh cached data (ex: 900)

       cachedir
	      directory for storing cached searches and data (ex: ~/.weather)

       conditions
	      output current conditions (possible values are False and True or 0 and 1)

       defargs
	      list of default command-line arguments (ex: avl,rdu)

       forecast
	      include a local forecast (possible values are False and True or 0 and 1)

       headers
	      list of conditions headers to display (ex: temperature,wind)

       imperial
	      filter/convert conditions for US/UK units (possible values are False and True or 0 and 1)

       metric filter/convert conditions for metric units (possible values are False and True or 0 and 1)

       quiet  skip preambles and don't indent (possible values are False and True or 0 and 1)

       setpath
	      directory search path for correlation sets (ex: .:~/.weather)

       verbose
	      show full decoded feeds (possible values are False and True or 0 and 1)

EXAMPLES

       The following is an example ~/.weather/weatherrc defining a couple aliases named home and work to be displayed  when  running  the  utility
       with no aliases specified...

[default]
defargs = home,work

[home]
description = Conditions and Forecast at Home
forecast = True
metar = http://weather.noaa.gov/pub/data/observations/metar/decoded/KRDU.TXT
zone_forecast = http://weather.noaa.gov/pub/data/forecasts/zone/nc/ncz041.txt

[work]
description = Conditions at Work
metar = http://weather.noaa.gov/pub/data/observations/metar/decoded/KGSO.TXT

       Now if weather is invoked by itself on the command line, it will output conditions for home and work, and also a forecast for home only.

AUTHOR

       Specification and manual written by Jeremy Stanley <fungi@yuggoth.org>.

SEE ALSO

       weather(1)

2.0								    2012-06-24							      weatherrc(5)
All times are GMT -4. The time now is 01:42 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy