Extract a substring using SED/AWK Post: 302647387

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed, grep, awk, regex -- extracting a matched substring from a file/string

Ok, I'm stumped and can't seem to find relevant info. (I'm not even sure, I might have asked something similar before.): I'm trying to use shell scripting/UNIX commands to extract URLs from a fairly large web page, with a view to ultimately wrapping this in PHP with exec() and including the...

2. Shell Programming and Scripting

extract using sed/awk - need help? Please!!

Need help..not sure how to use with awk or sed I want to take data from the notification.$$ file and assign the data to variable "group". Not sure how to do it. The data I want to extract from the notification.$$ is on the first line of the file ..right after the (notice): NetWorker...

3. Shell Programming and Scripting

Using Awk in shell script to extract an index of a substring from a parent string

Hi All, I am new to this shell scripting world. Struck up with a problem, can anyone of you please pull me out of this. Requirement : Need to get the index of a substring from a parent string Eg : index("Sandy","dy") should return 4 or 3. My Approach : I used Awk function index to...

4. Shell Programming and Scripting

Sed extract substring on (OS X)

On OS 10.4.11 I have filenames like: 670711 SA T2 v1-1_DS_EF.doc CT_670520 AM T1 v1-2_DS_EF.doc CT_670716 - 2 SA T4 v1-2_DS_EF.doc CT_670713 SA T3 v1-1_DS_EF.doc 670421 PA DYP1 v1-1_DS_EF.doc CT_670425 PA DYP2 v1-1_DS_EF.doc CT_670107 RA T3 v1-2_DS_EF.doc CT_670521 AM T2 v1-2_DS_EF.doc...

5. Shell Programming and Scripting

Extract some characters with SED or AWK

Hi, I have the following example string: today_is_a_good_day.txt The character "_" inside the string can sometimes be more or less. The solution for every string equal the count of "_" should be alway the rest after the last underline character. Result: day.txt I want to use awk...

6. UNIX for Dummies Questions & Answers

Using sed to extract a substring at end of line

This is the line that I am using: sed 's/^*${3}*$$/\1 /' <test.txt >results.txt and suppose that test.txt contains the following lines: http://www.example.com/200904/AUS.txt http://www.example.com/200903/_RUS.txt http://www.example.com/200902/.FRA.txt What I expected to see in results.txt...

7. Shell Programming and Scripting

Substring using sed or awk

I am trying to get a substring from a string stored in a variable. I tried sed with a bit help from this forum, but not successful. Here is my problem. My string is: "REPLYFILE=myfile.txt" And I need: myfile.txt (everything after the = symbol). My string is: "myfile.txt.gz.20091120.enc...

8. Shell Programming and Scripting

Substring using cut/awk/sed

Hi Gurus,I have a seemingly simple problem but struggling with it.It is as follows : I/p string - ABCDEFGHIJ20100909.txt desired o/p - AB,DEF,20100909,ABCDEFGHIJ20100909.txt How to achieve it ?Thanks in advance. Please use code tags, thank you

9. Shell Programming and Scripting

Using sed, awk or perl to remove substring of all lines except the first

Greetings All, I would like to find all occurences of a pattern and delete a substring from the all matching lines EXCEPT the first. For example: 1234::group:user1,user2,user3,blah1,blah2,blah3 2222::othergroup:user9,user8 4444::othergroup2:user3,blah,blah,user1 1234::group3:user5,user1 ...

10. Shell Programming and Scripting

Awk/sed HTML extract

I'm extracting text between table tags in HTML <th><a href="/wiki/Buick_LeSabre" title="Buick LeSabre">Buick LeSabre</a></th> using this: awk -F "</*th>" '/<\/*th>/ {print $2}' auto2 > auto3 then this (text between a href): sed -e 's/$<*>$//g' auto3 > auto4 How to shorten this into one...

LEARN ABOUT MINIX

pbmreduce

pbmreduce(1)                                                  General Commands Manual                                                 pbmreduce(1)

NAME

       pbmreduce - read a portable bitmap and reduce it N times

SYNOPSIS

       pbmreduce [-floyd|-fs|-threshold ] [-value val] N [pbmfile]

DESCRIPTION

       Reads a portable bitmap as input.  Reduces it by a factor of N, and produces a portable bitmap as output.

       pbmreduce  duplicates  a  lot  of  the  functionality  of pgmtopbm; you could do something like pnmscale | pgmtopbm, but pbmreduce is a lot
       faster.

       pbmreduce can be used to "re-halftone" an image.  Let's say you have a scanner that only produces black&white, not grayscale, and it does a
       terrible job of halftoning (most b&w scanners fit this description).  One way to fix the halftoning is to scan at the highest possible res-
       olution, say 300 dpi, and then reduce by a factor of three or so using pbmreduce.  You can even correct the  brightness  of  an  image,  by
       using the -value flag.

OPTIONS

       By  default,  the  halftoning after the reduction is done via boustrophedonic Floyd-Steinberg error diffusion; however, the -threshold flag
       can be used to specify simple thresholding.  This gives better results when reducing line drawings.

       The -value flag alters the thresholding value for all quantizations.  It should be a real number between 0 and 1.  Above 0.5  means  darker
       images; below 0.5 means lighter.

       All flags can be abbreviated to their shortest unique prefix.

SEE ALSO

       pnmenlarge(1), pnmscale(1), pgmtopbm(1), pbm(5)

AUTHOR

       Copyright (C) 1988 by Jef Poskanzer.

                                                                  02 August 1989                                                      pbmreduce(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed, grep, awk, regex -- extracting a matched substring from a file/string

Discussion started by: ropers

2. Shell Programming and Scripting

extract using sed/awk - need help? Please!!

Discussion started by: gzs553

3. Shell Programming and Scripting

Using Awk in shell script to extract an index of a substring from a parent string

Discussion started by: sandeepms17

4. Shell Programming and Scripting

Sed extract substring on (OS X)

Discussion started by: mlommel