Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Bash - Appending to specific line in file
Top Forums Shell Programming and Scripting Bash - Appending to specific line in file Post 302793061 by MadeInGermany on Thursday 11th of April 2013 03:47:55 PM
Old 04-11-2013
Assumed your filename is "file".
With sed:
Code:
factor="3,6"
trial="YES,18,1.635"
sed '/'"$factor"'|/ s/$/|'"$trial"'/' < file > file.new

With the shell built-ins it becomes a bit long,
so a function makes sense:
Code:
append () {
IFS="|"   
while read factor trial
do
  if [ "$factor" = "$1" ] 
  then
    echo "$factor|$trial|$2"
  else
    echo "$factor|$trial"
  fi
done < file > file.new
}

and call it
Code:
append "3,6" "YES,18,1.635"

---------- Post updated at 02:47 PM ---------- Previous update was at 02:38 PM ----------

The sed version has the problem that it does not have a true field separator.
Here is an awk version:
Code:
awk -F"|" '{if ($1==factor) {print $0 FS trial} else {print}}' factor="3,6" trial="YES,18,1.635" < file > file.new

This User Gave Thanks to MadeInGermany For This Post:
treesloth
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Reading specific contents from a file and appending it to another file

Hi, I need to write a shell script (ksh) to read contents starting at a specific location from one file and append the contents at specific location in another file. Please find below the contents of the source file that I need to read the contents from, File 1 -----# more... (5 Replies)
Discussion started by: dnicky
5 Replies

2. Shell Programming and Scripting

Appending the line number and a seperator to each line of a file ?

Hi, I am a newb as far as shell scripting and SED goes so bear with me on this one. I want to basically append to each line in a file a delimiter character and the line's line number e.g Change the file from :- aaaaaa bbbbbb cccccc to:- aaaaaa;1 bbbbbb;2 cccccc;3 I have worked... (4 Replies)
Discussion started by: pjcwhite
4 Replies

3. Shell Programming and Scripting

Appending a column in one file to the corresponding line in a second

It appears that this has been asked and answered in similar fashions previously, but I am still unsure how to approach this. I have two files containing user information: fileA ttim:/home/ttim:Tiny Tim:632 ppinto:/home/ppinto:Pam Pinto:633 fileB ttim:xkfgjkd*&#^jhdfh... (3 Replies)
Discussion started by: suzannef
3 Replies

4. Shell Programming and Scripting

How to read the value from a specific line and column BASH

Hi All, I have the same problem as the one posted in https://www.unix.com/shell-programming-scripting/96097-how-read-value-specific-line-column-csh-variable.html but I'm using bash. Can anyone tell me how I have to modify the code to make it bash compatible? eval `awk 'NR==3{print "set... (5 Replies)
Discussion started by: f_o_555
5 Replies

5. UNIX Desktop Questions & Answers

Appending file extensions to filenames in bash scripts

Hi Suppose I have a variable called filename and it it contains the name of a file. I then would like to append an extension to that filename. The filename currently has no extensions. How do I do this? Thanks (11 Replies)
Discussion started by: ladyAnne
11 Replies

6. UNIX for Advanced & Expert Users

Appending # to the start of specific line in a properties file

Hi, I have the following file, ABC.txt: ABC=123 DEF=234 FGH=345 Based on my validation and conditional processing it is observed that i need to comment or append # before DEF=234 so the same file ABC.txt should look as follows ABC=123 #DEF=234 FGH=345 Sorry if its a... (6 Replies)
Discussion started by: mihirvora16
6 Replies

7. UNIX for Dummies Questions & Answers

Comparing to specific line in file bash script

Hi, I have a value stored in x and I need to compare it to the numbers in every other line of a file. The file contains alternating lines of numbers and letters: aaaa1111 AAAAAAAA bbbb2222 BBBBBBBB cccc3333 CCCCCCCC I need to compare x to the numbers in every other line without the... (2 Replies)
Discussion started by: ShiGua
2 Replies

8. UNIX for Advanced & Expert Users

Appending a files contents to the end of a specific file name in several directories

Here is my dir structure: /tmp/dave/myappend.txt /tmp/dave/dir1/test.txt /tmp/dave/dir2/test.txt /tmp/dave/dir3/test.txt /tmp/dave/dir4/test.txt I want to append the contents of myappend.txt to the end of each file with the name "test.txt" in all dirs in /tmp/dave/ I have tried this:... (2 Replies)
Discussion started by: bigd213
2 Replies

9. Shell Programming and Scripting

Extract specific line in an html file starting and ending with specific pattern to a text file

Hi This is my first post and I'm just a beginner. So please be nice to me. I have a couple of html files where a pattern beginning with "http://www.site.com" and ending with "/resource.dat" is present on every 241st line. How do I extract this to a new text file? I have tried sed -n 241,241p... (13 Replies)
Discussion started by: dejavo
13 Replies

10. Shell Programming and Scripting

Appending content of a file to another file before a specific character

Hi there, i've got a file with this content $ cat file1 Matt Mar The other file has the same number of lines with this content: $ cat file2 20404=767294 23450=32427 is there a way with either using sed, awk or paste to insert the content of file1 before the "=" character? So... (3 Replies)
Discussion started by: nms
3 Replies

LEARN ABOUT DEBIAN

bdfresize

BDFRESIZE(1)						      General Commands Manual						      BDFRESIZE(1)

NAME

       bdfresize - Resize BDF Format Font

SYNOPSIS

       bdfresize [-v] [-b number] [-[whf] factor] [bdf-file]

DESCRIPTION

       Bdfresize is a command to magnify or reduce fonts which are described with the standard BDF format.  If bdf-file is not specified, it reads
       from stdin.  Bdfresize outputs the result to stdout in BDF format.  Some COMMENT lines are inserted to the result font.	FONT name is modi-
       fied  depending on the resize factor if the name is described in XLFD format.  SIZE, FONTBOUNDINGBIX, SWIDTH, DWIDTH, BBX and some property
       lines are also modified.  Other lines are copied from source.  If a syntax error occurs in a source font, bdfresize notices  it	and  stops
       the whole process.

OPTIONS

       -v      Show the version number and exit.

       -b number
	       Specify the blackness.  Pixel values of a resized font are decided by this value.  Default is 4.

       -w factor
	       Specify the resize factor for the font width.

       -h factor
	       Specify the resize factor for the font height.

       -f factor
	       Same as ``-w factor -h factor''.

       factor is described in either of following forms.
	    <digits>
	    <digits>/<digits>

SEE ALSO

       bdftopcf(1), xfed(1), Character Bitmap Distribution Format 2.1 (Adobe Systems, Inc.), X Logical Font Description Conventions (MIT X Consor-
       tium Stardard)

AUTHOR

       Copyright (C) 1988, 1992 Hiroto Kagotani.
	    kagotani@cs.titech.ac.jp

BDF
								  12 October 1992						      BDFRESIZE(1)
All times are GMT -4. The time now is 12:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy