Delete strings in file1 based on the list of strings in file2 Post: 302490049

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

delete lines from file2 beginning w/file1

I've been searching around here and other places, but can't put this together... I've got a unique list of words in file 1 (one word on each line). I need to delete each line in file2 that begins with the word in file1. I started this way, but want to know how to use file1 words instead...

2. Shell Programming and Scripting

replacing text in file1 with list from file2

I am trying to automate a process of searching through a set of files and replace all occurrences of a formatted text with the next item in the list of a second file. Basically i need to replace all instances of T????CLK???? with an IP address from a list in a second file. the second file is one IP...

3. UNIX for Dummies Questions & Answers

Delete lines with duplicate strings based on date

Hey all, a relative bash/script newbie trying solve a problem. I've got a text file with lots of lines that I've been able to clean up and format with awk/sed/cut, but now I'd like to remove the lines with duplicate usernames based on time stamp. Here's what the data looks like 2007-11-03...

4. Shell Programming and Scripting

Delete lines in file containing duplicate strings, keeping longer strings

The question is not as simple as the title... I have a file, it looks like this <string name="string1">RZ-LED</string> <string name="string2">2.0</string> <string name="string2">Version 2.0</string> <string name="string3">BP</string> I would like to check for duplicate entries of...

5. Shell Programming and Scripting

[Solved] delete line from file1 by reading from file2

Hi All, I have to arrange one of the text file by deleting specific lines. cat file1.txt 3595 3595 -0.00842773 -0.0085077 0.00368851 12815 12815 -0.00929239 0.00439785 0.0291697 3747 3747 -0.00974353 0.00228922 0.0225058 3574 3574 -0.00711399 -0.00315748 0.0141206 .... 12734...

6. UNIX for Dummies Questions & Answers

if matching strings in file1 and file2, add column from file1 to file2

I have very limited coding skills but I'm wondering if someone could help me with this. There are many threads about matching strings in two files, but I have no idea how to add a column from one file to another based on a matching string. I'm looking to match column1 in file1 to the number...

7. Shell Programming and Scripting

Match part of string in file2 based on column in file1

I have a file containing texts and indexes. I need the text between (and including ) INDEX and number "1" alone in line. I have managed this: awk '/INDEX/,/1$/{if (!/1$/)print}' file1.txt It works for all indexes. And then I have second file with years and indexes per year, one per line...

8. Shell Programming and Scripting

Print sequences from file2 based on match to, AND in same order as, file1

I have a list of IDs in file1 and a list of sequences in file2. I can print sequences from file2, but I'm asking for help in printing the sequences in the same order as the IDs appear in file1. file1: EN_comp12952_c0_seq3:367-1668 ES_comp17168_c1_seq6:1-864 EN_comp13395_c3_seq14:231-1088...

9. UNIX for Beginners Questions & Answers

How to pass strings from a list of strings from another file and create multiple files?

Hello Everyone , Iam a newbie to shell programming and iam reaching out if anyone can help in this :- I have two files 1) Insert.txt 2) partition_list.txt insert.txt looks like this :- insert into emp1 partition (partition_name) (a1, b2, c4, s6, d8) select a1, b2, c4,

10. UNIX for Beginners Questions & Answers

Delete rows based on array of strings

Hi All, I have a file with around 1000 rows and one of the fields is an account number. I have been provided with a few account numbers, when any of the account number appears in a row then the row has to be deleted. Can we place the account numbers in an array and use awk or sed for this task?...

LEARN ABOUT DEBIAN

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)