Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Replacing contents in a file from multiple programmes
Top Forums Shell Programming and Scripting Replacing contents in a file from multiple programmes Post 302231595 by tosatesh on Tuesday 2nd of September 2008 07:04:02 PM
Old 09-02-2008
Hi All,
I have a query on Perl. I have a text file which has 3 lines, i want to only replace the first line with my replaced text and keep the rest of the text. FOr eg

Before change -->
echo:aending
echopending
echo:cending

After change --->
echo:a:done
echopending
echo:cending

Brief: Here i am continuously trying to modify the text file though this perl programme from multiple machines i.e this perl prog will run on multiple machines trying to modify\change a single text.

Snippet of my code.(not working yet. It appends to the text file instead of replacing it). Can you please guide me to this.
============================================
open(MYFILE, "+< $myfile") || die;
flock(MYFILE, 2);

#my $myfile="c:\\ssk\\help.txt";
#open INPUT, "<$myfile";
undef $/;
my $content = <MYFILE>;
my $inprogress = "inprogress";
my $done = "done";
$content =~ m/(\w*)\w*)\w*)/;

if ($3 eq "pending")
{

$content=~ s/pending/inprogress/;
my $contentbkup = $content;
$content =~ s/(.*)//g;
print MYFILE "$1";
print MYFILE "$contentbkup";
$contentbkup =~ s/(.*).*).*)/(.*).*):$done/;
}

seek(MYFILE, 0, 0);
close MYFILE;
$/ = "\n";
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

put the contents of this file into a variable with multiple lines

I have a file that contains the following lines the brown quick fox jumped over the white laze dog 0123456789 I wanted to put the contents of this file into a variable so I used this code: VAR_LIST=`cat $2` where $2 is the file name passed as an argument to the script If I... (3 Replies)
Discussion started by: Nomaad
3 Replies

2. Shell Programming and Scripting

replacing text with contents from another file

I'm trying to change the ramfs size in kernel .config automatically. I have a ramfs_size file generated with du -s cat ramfs_size 64512 I want to replace the linux .config's ramdisk size with the above value CONFIG_BLK_DEV_RAM_SIZE=73728 Right now I'm doing something dumb like: ... (3 Replies)
Discussion started by: amoeba
3 Replies

3. Shell Programming and Scripting

Replacing string in all instances (both filenames and file contents) in a directory

Hi, I have a set of files stored in a single directory that I use to set parameters for a physics code, and I would like to streamline the process of updating them all when I change a parameter. For instance, if the files are called A2000p300ini, A2000p300sub, A2000p300run, and the text in each... (3 Replies)
Discussion started by: BlueChris
3 Replies

4. Shell Programming and Scripting

Create Multiple files by reading a input file and changing the contents

Being new to this area .I have been assigned a task which i am unable to do . Can any one please help me . Hi I have requirement where i have input file XYZ_111_999_YYYYMMDD_1.TXT and with header and series of Numbers and Footer. I want to create a mutiple output files with each file having a... (2 Replies)
Discussion started by: bhargavkr
2 Replies

5. Ubuntu

Cannot see 'tick boxes' and other contents when installed programmes using Wine. Is there any other

Hi! I have installed ubuntu out of an error, a bit of frustration, a bit of annoyance and a bit of excitement! I am (was!) a windows user. I had windows 7 on my laptop. You might already know how famous windows is with nasty viruses. I got one too! Had no option but to get rid of the whole... (3 Replies)
Discussion started by: ubuntu_noob
3 Replies

6. Shell Programming and Scripting

sed command for copying the contents of other file replacing it another file on specifc pattern

We have 2 file XML files - FILE1.XML and FILE2.xml - we need copy the contents of FILE1.XML and replace in FILE2.xml pattern "<assignedAttributeList></assignedAttributeList>" FILE1.XML 1. <itemList> 2. <item type="Manufactured"> 3. <resourceCode>431048</resourceCode> 4. ... (0 Replies)
Discussion started by: balrajg
0 Replies

7. UNIX for Dummies Questions & Answers

Replacing a particular string in all files in folder and file contents

I need to replace all filesnames in a folder as well as its content from AK6 to AK11. Eg Folder has files AK6-Create.xml, AK6-system.py etc.. the files names as well as contents should be changes to AK9-Create.xml, AK9-system.py etc All files are xml and python scripts. ---------- Post... (0 Replies)
Discussion started by: Candid247
0 Replies

8. Shell Programming and Scripting

Replacing a single line with multiple lines in a file

Hi Am confused with the usage of "sed" command I want to replace a single line with multiple lines of a file.. eg., A file has Hi, How are you? I need to replace as Am fine What are You doing? I used the script as string1="Hi, How are you?" echo "$string1 is the value"... (4 Replies)
Discussion started by: Priya Amaresh
4 Replies

9. Shell Programming and Scripting

Replacing multiple spaces in flat file

Greetings all I have a delimited text file (the delimiter is ';') where certain fields consist of many blanks e.g. ; ; and ; ; Before I separate the data I need to eliminate these blanks altogether. I tried the sed command using the following syntax: sed -i 's/; *;/;;/g' <filename> ... (15 Replies)
Discussion started by: S. BASU
15 Replies

10. UNIX for Beginners Questions & Answers

Output file name and file contents of multiple files to a single file

I am trying to consolidate multiple information files (<hostname>.Linux.nfslist) into one file so that I can import it into Excel. I can get the file contents with cat *Linux.nfslist >> nfslist.txt. I need each line prefaced with the hostname. I am unsure how to do this. --- Post updated at... (5 Replies)
Discussion started by: Kentlee65
5 Replies

LEARN ABOUT OSF1

dxmcstextreplace

DXmCSTextReplace(3X)													      DXmCSTextReplace(3X)

NAME

       DXmCSTextReplace - Replaces a specified segment of text in a compound string text widget.

SYNOPSIS

       DXmCSTextStatus DXmCSTextReplace(
	       Widget widget,
	       int from_pos,
	       int to_pos,
	       XmString value );

PARAMETERS

       The  identifier	(widget ID) of the compound string text widget.  An integer that represents the first character position of the text being
       replaced.  An integer that represents the last character position of the text being replaced.  Replacement text for  part  of  the  current
       text in the compound string text widget, or additional text to be inserted into the compound string text widget.

DESCRIPTION

       The  DXmCSTextReplace  routine  replaces  part  of  the text in the compound string text widget.  Within the widget, positions are numbered
       starting at 0 and increasing sequentially.  For example, to replace the second and third characters in the text, from_pos should be  1  and
       to_pos should be 3.  To insert text after the fourth character, from_pos and to_pos should both be 4.

RETURN VALUES

       A value that represents the status (success or failure) of the replace operation, as follows:

       --------------------------------------------------------
       Value			  Description
       --------------------------------------------------------
       DXmCSTextStatusEditDone	  Text replaced successfully.
       DXmCSTextStatusEditError   Text not replaced (failure).
       --------------------------------------------------------

SEE ALSO

       DXmCreateCSText(3X), DXmCSTextSetString(3X), DXmCSTextGetString(3X)

															      DXmCSTextReplace(3X)
All times are GMT -4. The time now is 07:40 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy