read space filled file and replace text at specific position Post: 302186473

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

search and replace a specific text in text file?

I have a text file with following content (3 lines) filename : output.txt first line:12/12/2008 second line:12/12/2008 third line:Y I would like to know how we can replace 'Y' with 'N' in the 3rd line keeping 1st and 2nd lines same as what it was before. I tried using cat output.txt...

2. Shell Programming and Scripting

Using sed to replace specific character and specific position

I am trying to use sed to replace specific characters at a specific position in the file with a different value... can this be done? Example: File: A0199999123 A0199999124 A0199999125 Need to replace 99999 in positions 3-7 with 88888. Any help is appreciated.

3. Shell Programming and Scripting

Sed position specific replace

I'm drawing a blank on how to use sed to replace selectively based on position in the string (vs nth occurence): hello.|there.|how.|are.|you.| I want the period removed in the 3rd item (as defined by the pipe delimiter) if a period is present. So the result in this case would be: ...

4. Shell Programming and Scripting

remove white space from specific columns in text file

Hello i have a text file like this: 1 AB AC AD EE 2 WE TR YT WW 3 AS UY RF YT the file is bigger , but that's an example of the data what i want to do is to merge all columns together except the first one, it will become like this : 1 ABACADEE 2 WETRYTWW 3 ASUYRFYT

5. UNIX for Dummies Questions & Answers

How do you view specific columns from a space delimited text file?

I have a space delimited text file with 1,000,000+ columns? I would only like to view specific ones (let's say through 1:10), how can I do that? Thanks!

6. Shell Programming and Scripting

Using sed to replace a string in a specific position

I asked this before, but my problem got more complicated. Heres what I am trying to do: I'm trying to replace a string at a certain location with another string. Heres the file I'm trying to change: \E I want to replace the escape code at the 3rd line, 2nd column with this escape code...

7. Shell Programming and Scripting

position specific replace in file

How to replace the position specific values in the file.. i searched a lot the forums but i couldn't able to do... i have file like below 576666666666666666666666666 7878 897987 121 0asdas Y12 5900fbb 777 09JJJ 78798347892374 234234234364 234232898 89HJHIHIGIUG989902743748327khjkhkjlh...

8. Shell Programming and Scripting

Find and replace with 0 for characters in a specific position

Need command for position based replace: I need a command to replace with 0 for characters in the positions 11 to 20 to all the lines starts with 6 in a file. For example the file ABC.txt has: abcdefghijklmnopqrstuvwxyz 6abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz...

9. Shell Programming and Scripting

How to read data from tab delimited file after a specific position?

Hi Experts, I have a tab deliminated file as below myfile.txt Local Group Memberships *Administrators *Guests I need data in below format starting from 4th position. myfile1.txt Administrators Guests the above one is just an example and there could...

10. Post Here to Contact Site Administrators and Moderators

Search for a pattern and replace a space at specific position with a Character in File

In file, we have millions of records each of 1000 in length. And at specific position say 800 there is a space, we need to replace it with Character X if the ID in that row starts with 123. So far i have used the below which is replacing space at that position to X but its not checking for...

LEARN ABOUT DEBIAN

dpkg-awk

DPKG-AWK(1)						      General Commands Manual						       DPKG-AWK(1)

NAME

       dpkg-awk - Utility to read a dpkg style db file

SYNOPSIS

       dpkg-awk [(-f|--file) filename] [(-d|--debug) ##] [(-s|--sort) list] [(-rs|--rec_sep) ??] '<fieldname>:<regex>' ... -- <out_fieldname> ..

DESCRIPTION

       dpkg-awk  Parses  a  dpkg status file (or other similarly formatted file) and outputs the resulting records.  It can use regex on the field
       values to limit the returned records, it can also be told which fields to output, and it can sort the matched fields.

OPTIONS

       -f filename
       --file filename
	      The file to parse.  The default is /var/lib/dpkg/status.

       -d [#]
       --debug [#]
	      Each time this is specified, it increased the debug level.

       -s field(s)
       --sort field(s)
	      A space or comma separated list of fields to sort on.

       -n field(s)
       --numeric field(s)
	      A space or comma separated list of fields that should be interpreted as numeric in value.

       -rs ??
       --rec_sep ??
	      Output this string at the end of each output paragraph.

       -h
       --help Display some help.

       fieldname
	      The fields from the file, that are matched with the regex given.	The fieldnames are case insensitive.

       out_fieldname
	      The fields from the file, that are output for each record.  If the first field listed begins with ^, then the list  of  fields  that
	      follows will NOT be output.

BUGS

       Be  warned  that  the author has only a shallow understanding of the dpkg packaging system, so there are probably tons of bugs in this pro-
       gram.

       This program comes with no warranties.  If running this program causes fire and brimstone to rain down upon the earth, you will be on  your
       own.

       This program accesses the dpkg database directly in places, querying for data that cannot be gotten via dpkg.

AUTHOR

       Adam Heath <doogie@debian.org>

DEBIAN
								 Debian Utilities						       DPKG-AWK(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

search and replace a specific text in text file?

Discussion started by: santosham

2. Shell Programming and Scripting

Using sed to replace specific character and specific position

Discussion started by: programmer22

3. Shell Programming and Scripting

Sed position specific replace

Discussion started by: tiggyboo

4. Shell Programming and Scripting

remove white space from specific columns in text file

Discussion started by: shelladdict