Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Need to find a string, check the next line, and if it matches certain criteria, replace it with a s
Top Forums Shell Programming and Scripting Need to find a string, check the next line, and if it matches certain criteria, replace it with a s Post 302371831 by frans on Monday 16th of November 2009 10:05:12 AM
Old 11-16-2009
Try this (but a sample could help !)
Code:
#!/bin/bash
Input="data.csv"
I=1
while read LINE
do    #~ find the string that starts with data7
    if [ "${LINE:0:5}" = "data7" ]
    then
        read LINE    #~ if the string on the next line has the word prisoner then replace it with the string in line 1.
        if $(echo "$LINE" | grep -q prisoner)
        then
            head -n$I "$Input" | tail -n1
            (( I ++ ))    #~ the next instance of the pattern would be replaced by the string in line 2 and so on.
        else echo "$LINE"
        fi
    else echo "$LINE"
    fi
done < "$Input" > OutputFile

 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Replace Entire line if any part matches regexp

Hey guys, I have a file that I've slowly been awking, seding, and greping for data entry. I am down to pull the addresses out to insert them into an excel file. Each address is a few lines, but i want to put a semicolon delimiter in between each address so I can export the text file into excel and... (6 Replies)
Discussion started by: Cocoabean
6 Replies

2. Shell Programming and Scripting

Find a line using a condition and replace a string in that line

Hello, I have a 100 line code. I have given a sample of it below: ABC*654654*1*54.54*21.2*87*1*654654654654 CCC*FS*FS*SFD*DSF GGG*FGH*CGB*FBDFG*FGDG ABC*654654*1*57.84*45.4*88*2*6546546545 CCC*WSF*SG*FGH*GHJ ADA*AF*SFG*DFGH*FGH*FGTH I need to select the line starting with "ABC" its... (6 Replies)
Discussion started by: nithins007
6 Replies

3. Emergency UNIX and Linux Support

Find a line using a condition and replace a string in that line

Hello, I have a 100 line code. I have given a sample of it below: ABC*654654*1*54.54*21.2*87*1*654654654654 CCC*FS*FS*SFD*DSF GGG*FGH*CGB*FBDFG*FGDG ABC*654654*1*57.84*45.4*88*2*6546546545 CCC*WSF*SG*FGH*GHJ ADA*AF*SFG*DFGH*FGH*FGTH I need to select the line starting with "ABC" its... (3 Replies)
Discussion started by: nithins007
3 Replies

4. Shell Programming and Scripting

Find and replace string matching criteria

Dear Friends, I am looking for a way to replace a string (multiple lines) starting with something and ending with something (these two values do not change) with blank. Basically I want to delete this code injection accross many sites and folders. Search Code (across files and folders) that... (2 Replies)
Discussion started by: libras
2 Replies

5. Shell Programming and Scripting

Need a Linux command for find/replace column based on specific criteria.

I'm new to shell programming, I have a huge text file in the following format, where columns are separated by single space: ACA MEX 4O_ $98.00 $127.40 $166.60 0:00 0:00 0 ; ACA YUL TS_ $300.00 $390.00 $510.00 0:00 0:00 0 ; ACA YYZ TS_ $300.00 $390.00 $510.00 0:00 0:00 0 ; ADZ YUL TS_ $300.00... (3 Replies)
Discussion started by: transat
3 Replies

6. Shell Programming and Scripting

Find a text and if condition matches then replace it

Need a script that can find text in a file and replace it accordingly. This is the file I have: while IFS=',' read -r f1 f2 f3 do { nohup /home/testuser/dbmaintenance/sys_offline_maintenance.sh $f1 $f2 $f3 > $f2.out & } done < "/home/testuser/dbmaintenance/week1offlineserver.txt" In... (4 Replies)
Discussion started by: singhhe
4 Replies

7. Shell Programming and Scripting

Replace all string matches in file with unique random number

Hello Take this file... Test01 Ref test Version 01 Test02 Ref test Version 02 Test66 Ref test Version 66 Test99 Ref test Version 99 I want to substitute every occurrence of Test{2} with a unique random number, so for example, if I was using sed, substitution would be something... (1 Reply)
Discussion started by: funkman
1 Replies

8. Shell Programming and Scripting

Replace string of a file with a string of another file for matches using grep,sed,awk

I have a file comp.pkglist which mention package version and release . In 'version change' and 'release change' line there are two versions 'old' and 'new' Version Change: --> Release Change: --> cat comp.pkglist Package list: nss-util-devel-3.28.4-1.el6_9.x86_64 Version Change: 3.28.4 -->... (1 Reply)
Discussion started by: Paras Pandey
1 Replies

9. UNIX for Beginners Questions & Answers

Replace matches string in each line with the arrayvalue in shell

I have a list of value , and need to replace that in my file. Eg: File1 tcname:fail tcname: Pass tcname:skipped File2: 01,02,03 Output: File 1 01:fail 02: Pass 03:Skipped (8 Replies)
Discussion started by: DevAakash
8 Replies

LEARN ABOUT DEBIAN

vinvert

vinvert(1Vi)															      vinvert(1Vi)

NAME

       vinvert - invert image pixel values

SYNOPSIS

       vinvert [option ...] [infile] [outfile]

DESCRIPTION

       vinvert inverts each input image to produce a corresponding output image. The operation is suitable for swapping black and white in a grey-
       scale image.

       Each output pixel is computed from the corresponding input pixel by

	      out-pixel = M - in-pixel

       where M is the maximum value allowed by the pixel representation, or 1 in the case of float or double pixels. Input pixel values  must  lie
       in the range [0,M].

       Each output image has the same number of bands, rows and columns, and the same pixel representation, as the corresponding input image.

COMMAND LINE OPTIONS

       vinvert accepts the following options:

       -help	      Prints a message describing options.

       -in infile     Specifies a Vista data file containing the input images.

       -out outfile   Specifies where to write the output images as a Vista data file.

       Input and output files can be specified on the command line or allowed to default to the standard input and output streams.

SEE ALSO

       vnegate(1Vi), vop(1Vi), VImage(3Vi), Vista(7Vi)

AUTHOR

       Art Pope <pope@cs.ubc.ca>

Vista Version 1.12						   24 April 1993						      vinvert(1Vi)
All times are GMT -4. The time now is 12:00 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy