Sponsored Content
Full Discussion: structured file update
Top Forums Shell Programming and Scripting structured file update Post 302328572 by otheus on Wednesday 24th of June 2009 04:12:25 PM
Old 06-24-2009
Well, if the target and replacement lines are of identical length, one could theoretically open up the raw device, find the sector which contains this data, and rewrite that sector with the new data.

But if you make one little mistake... oops! there goes the filesystem!
 

6 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Entering directories structured above user.

I wish to enter directories which are on the HD but not part of the user hierarchy and have access to the contents of an external HD. To an advanced user this is probably a stupid question but I experimented with ~, cd, . and.. to no avail. I did check for a suitable command but couldn't find one.... (9 Replies)
Discussion started by: Frank Hunter
9 Replies

2. Shell Programming and Scripting

Parsing structured files in Perl

Hi, looking for a piece of code to get the values from a structured text file like this: ############################################################################### ############################################################################### # # PERSONAL DATA DEFINITIONS #... (8 Replies)
Discussion started by: sarabande
8 Replies

3. Shell Programming and Scripting

Using awk to create a summary of a structured file

I am trying to use awk to create a summary of a structured file. Here is what it looks like: (random text) H1 H2 H3 H4 44 78 99 30 31 -- 32 21 12 33 55 21 I'd like to be able to specify a column, say H2, and then have information about that column printed. ... (4 Replies)
Discussion started by: afulldevnull
4 Replies

4. Programming

Reading structured arguments

I am passing an argument to a C++ program which is going to look like I need to get the integers into arrays a, b, c, d with a= 12,12,34,2,12 b= 34,4,2,1,23 c= 5,5,4,4,13 d= 6,6,6,6,5 (5 Replies)
Discussion started by: kristinu
5 Replies

5. UNIX for Dummies Questions & Answers

Converting unstructured data to structured data

Hi, Can someone help in converting the below unstructured data to a CSV format please. { "branchId" : "BNSFGDJNSJG-73264HB-132131BNHJFSDG", "branchName" : "NEWYORK-SSDF", "branchProductId" : "72Y5HFHSF7H3RUNAWEF", "PreferenceId" : "BASDBVcbzcYHcb", "emailId" :... (9 Replies)
Discussion started by: naveen.kuppili
9 Replies

6. UNIX for Beginners Questions & Answers

awk to update file with partial matching line in another file and append text

In the awk below I am trying to cp and paste each matching line in f2 to $3 in f1 if $2 of f1 is in the line in f2 somewhere. There will always be a match (usually more then 1) and my actual data is much larger (several hundreds of lines) in both f1 and f2. When the line in f2 is pasted to $3 in... (4 Replies)
Discussion started by: cmccabe
4 Replies
All times are GMT -4. The time now is 07:06 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy