Sponsored Content
Top Forums Shell Programming and Scripting read space filled file and replace text at specific position Post 302187455 by summer_cherry on Monday 21st of April 2008 05:40:07 AM
Old 04-21-2008
hi,
I am not sure whether understood your requirement totally and exactlly.

Anyway, hope below one can help you a little.

file:
Code:
123RT3kljfsd12.3saf
234sddksadfjLEOkjffs
234RT3fjsdka1234fkdjs

output:
Code:
input 23.4
123RT3kljfsd12.3saf
234sddksadfjLEOkjffs
234RT3fjsdka23.4fkdjs

code:
Code:
read t
cat file | nawk -v tt="$t" '{
if(substr($0,4,3)=="RT3")
{
	temp=substr($0,13,4)
	if (temp+0==temp && index(temp,".")==0)
		printf("%s%s%s\n",substr($0,1,12),tt,substr($0,17))
	else
		print
}
else
	print
}'

 

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... (4 Replies)
Discussion started by: santosham
4 Replies

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. (5 Replies)
Discussion started by: programmer22
5 Replies

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: ... (2 Replies)
Discussion started by: tiggyboo
2 Replies

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 (8 Replies)
Discussion started by: shelladdict
8 Replies

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! (3 Replies)
Discussion started by: evelibertine
3 Replies

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... (3 Replies)
Discussion started by: tinman47
3 Replies

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... (6 Replies)
Discussion started by: greenworld123
6 Replies

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... (4 Replies)
Discussion started by: thangabalu
4 Replies

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... (15 Replies)
Discussion started by: Litu1988
15 Replies

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... (3 Replies)
Discussion started by: Jagmeet Singh
3 Replies
set_color(1)							       fish							      set_color(1)

NAME
set_color - set_color - set the terminal color set_color - set the terminal color Synopsis set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR] Description Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple, cyan, white and normal. o -b, --background Set the background color o -c, --print-colors Prints a list of all valid color names o -h, --help Display help message and exit o -o, --bold Set bold or extra bright mode o -u, --underline Set underlined mode o -v, --version Display version and exit Calling set_color normal will set the terminal color to whatever is the default color of the terminal. Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey font color, while set_color --bold white will result in a white font color. Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator. set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of ncurses and recompile fish against it in order to fix this issue. Version 1.23.1 Sun Jan 8 2012 set_color(1)
All times are GMT -4. The time now is 08:38 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy