Programming :: How To Write Using Fwrite Without Affecting Existing Content Of File?

Oct 30, 2010

How can I write to a file multiple times using fwrite without affecting the previous writes?The method shown below accepts a file name, buffer and offset. The method opens the file in reading/writing mode and writes the content of the buffer at offset.

View 1 Replies


ADVERTISEMENT

General :: Write A Script Which Will Add A Content To A File?

Jun 13, 2010

How would i write a script which will add a following content to a file.File Before running script.

Code:
acpi = 1
apic = 1
builder = 'hvm'[code]....

View 3 Replies View Related

Ubuntu :: Changing Partition Sizes Without Affecting Their Content?

Jul 6, 2010

I have a few partitions on my hard-drive, one for Ubuntu, one for Windows 7 and another for general data storage. When I installed Ubuntu, I was presented with a GUI which allowed me to easily reassign storage space from the latter two to create the former. Is there any way to get to something similar, from which I can adjust the proportions of the partition sizes, without affecting their content?

View 1 Replies View Related

Programming :: Write Own Telnet Server Instead Of Existing One?

Jun 29, 2010

how i will write my own telnet server instead of existing one.please give me the path for telnet.c file in the linux kernel

View 9 Replies View Related

Server :: Install Different Version Of Perl+module Without Affecting The Existing One ?

May 10, 2011

I need to install different version of Perl with needed modules to Test Run a perl script (ASSP) without affecting the existing one as the old version of Perl is buggy with seg fault.

View 5 Replies View Related

Programming :: Sed - Save Output To File With Filename From Content Of Another File?

Feb 28, 2011

My employer issues pdf files with everyones work schedules. I copy the content and save it as plain text in a file called unformatted (hope to be able to automate this step someday). Im working on a SED script that reduces unformatted to only display what I want to see and saves the result in a file Ive named formatted. After that I have to manually copy formatted and save it with that days date as a filename e.g. 2011-02-25 or whatever day is scheduled in the pdf, for use on a mobile device (Nokia N900). I noticed that the date occurs on certain lines in the file so I added a line like:

sed -n 's/^Date: (201[1-9])/([0-1][0-9])/([0-3][0-9]).*/1-2-3/p' < unformatted >theDate
That creates a file theDate with the date in it that I wish to use as the filename for this particular instance. So I would like to skip the file formatted all together and have the sed- script write to a new file using the content of the Date as a filename, but how do I make that happen? And of course it would be more elegant if I could skip the intermediate theDate file as well.

View 4 Replies View Related

Programming :: Copy One File Content To Multiple File

May 28, 2010

I wanted to copy one file to multiple new files. I have an idea to write a script and do the operation. But here i m looking for any particular command to do this operation.

View 1 Replies View Related

Programming :: C - Can't Print In Screen The Content Of File

Mar 20, 2010

why this code can't print in the while loop the content of the file ?

Code:

#include <stdio.h>
int main()
{
FILE *fp;

[code]...

View 7 Replies View Related

Programming :: Display Content Of Txt File In Xbmc?

Apr 25, 2011

go about developing this add-on. i am testing this on my xbmc-live set-up; i am fairly affluent in bash/ c but unfortunately i dont have experience with python.i trimmed the data using this bash 1-liner so the output looks like:

Code:
xbmc@XBMCLive:~$ wget -q --output-document=- www.google.com/movies | sed -n 3p | tr '<' "
" | egrep "(title_bar|id=link_1_theater|class=info|mid=|Rated|class=times|fandango)" | grep

[code]...

View 2 Replies View Related

Programming :: Move The Index Of A File To Another Existing File?

Feb 8, 2011

i want to move the text of a file to another file,using sed command. how can i do it?

View 1 Replies View Related

Programming :: Append Contents Of One File To Another Existing File?

Nov 17, 2008

I have two files list1.cfg and list2.cfg both files contains differentrecords details like

List1.cfg
NAME1:25:C:NAME LINE1:
NAME2:25:C:NAME LINE2:
CITY:25:C:City:

[code]....

Now I want to append contents list2.cfg to list1.cfg(It ispposible using cat list2.cfg >>list1.cfg) but I want to check if content of (record) in list2.cfg is present in list1.cfg then dont append it otherwise append it.

View 1 Replies View Related

Programming :: Iterate The Content Of A File In The Shell Script?

May 29, 2010

i need to check group of URLs and there https requests from browser. Recently i got some command line web browsers to know the HTTPS status of the URL like curl, wget etc... Now all of i need to do is write a shell script. I will put all my URLs in a text file and my shell script should read each URL one by one and log the status along with the corresponding URL.

Sample output:

./myscript.sh url.txt
1. site - 200 OK

View 6 Replies View Related

Programming :: Remove Many Lines Based On Content Of Other File

Jun 21, 2011

I a csv-file (A.csv) with a total of 4.600.000 lines. Thats to many and only a few is necessary. I have a txt-file with 150 lines (X.txt) (all lines is dataset from a mainframe and looks like abc.def.123.456. How do I remove lines from A.csv where none of the dataset from x.txt is present?

View 13 Replies View Related

Programming :: Lilypond Parser For Python - Typeset The Content Of File

Nov 12, 2009

I'm woring on a personal research project and would like to know if there are lilypond parsers for python available or I'll have to create my own. Just in case you are wondering: I don't need to typeset the content of the lilypond file, just understand what's written in the file (what notes, what duration, when in time to play each one, etc). [url]

View 1 Replies View Related

General :: Dividing Content Of One File By Content Of Another?

Apr 12, 2011

If you have the value 100 in File1 and the value 5 in File2, how do you write a script to divide the 100 in File1 by the 5 in File2 in Linux Bash Shell?The operating system I am using is Ubuntu 10 and object is to write a script to accomplish this task.

View 5 Replies View Related

Programming :: Updating A Text File (replacing The Existing Parameters With The New Values)

Nov 9, 2010

I have a text file that needs to be updated to be used by some fortran code later. it looks like that:

1,1 !Ms for y-stations, Ns for x-stations
0,0,0, !xsta, ysta, zsta

I need to replace the "0,0,0" with new values for xsta,ysta and zsta;

View 4 Replies View Related

Ubuntu :: Samba Configuration - Unable To Write New Content

Sep 27, 2010

I have ubuntu server 10.4 installed on an Intel SS4200-E, which I have configured without any RAID. This machine acts as a media server to another PC. The other PC runs Windows 7 Ultimate. I have 3 1TB hard disks connected to it, and the file system on all the 3 are NTFS. I have mounted the hard disks as ntfs. I have made the folders on all the 3 hard disks shareable. I have configured Samba to make the folders on the hard disks "visible".

The ubuntu machine is in a headless configuration (it doesn't have any VGA card where can connect a monitor). I can configured SSH on it, so I can use putty from the Windows machine to logon to the ubuntu machine, but it is text based only. I am able to see all the 3 disks from the Windows machine. I am able to read/write into 2 of the disks. I am able to read, copy and delete from the 3rd disk, but not write new content to it.

Following is the snippet from /etc/fstab:

Code:

/dev/sda3 /media/Media1 ntfs-3g defaults,locale=en_US.utf8 0 0
/dev/sdb1 /media/Media2 ntfs-3g defaults,locale=en_US.utf8 0 0
/dev/sdc1 /media/Media3 ntfs-3g defaults,locale=en_US.utf8 0 0

Following are the lines which I have added to the end of /etc/samba/smb.conf:

Code:

[Media1]
path = /media/Media1
writable = yes
guest ok = yes

[code]....

View 9 Replies View Related

General :: How To Write Perl Script To Catch All Content

Aug 5, 2010

I would like to know a how to write Perl script to catch all the content in between BEGIN: and END from input file could any body help?

View 9 Replies View Related

Programming :: C++ Program Does Not Write File

Jun 26, 2011

I have the following problem. I call a C++ program from a Java servlet by using Runtime exec. The OS is ubuntu and I use Netbeans 7.0 with Glassfish 3.1 web server.The program executes but it does not open and write into a specified file in a specified folder. The same C++ program compiled under Windows opens and writes this file.How can I solve this problem in Linux?

View 2 Replies View Related

Programming :: Bash - Read Content Of File To Variable And Use This Variable In For Loop ?

Aug 21, 2009

I'm trying to read content of file to variable and use this variable in for loop. The problem is, when I have c++ comment style in file - /*. Spaces in line are also interpreted as separated lines.

For example:

Code:

Changing $files to "$files" eliminate these problems but causes that whole content of variable is treated as one string (one execution of loop).

View 6 Replies View Related

Programming :: Changing Log Script To Write To Top Of File

Apr 5, 2011

I'm running a simple backup and log script that is cronjobed to run twice a day. So currently, when new data is added to the log, its added to the direct bottom of the log file. However, I would like to have it printed to the very top of the log. The code is attached, I can't quote it in here because I am a new user and the system thinks I have url's in it, when they are just paths.

View 2 Replies View Related

Programming :: Detect If A File Is Used In Write Mode?

Apr 14, 2011

I have to read files from a linux server. When I copy a file I receivce just a portion of the file I expected if the process generationg ths file is still writing it.

I read the file from a java apllication using SSH/SFTP. How can I detect if the file is still used by the writing process ?

View 4 Replies View Related

Programming :: Can't Write Header To Excel File?

Jan 15, 2010

I am having trouble getting some code to work. It takes an input file (csv) and converts it to an XLS. The problem is that I can't seem to get a header to be printed first...

Code:
use Spreadsheet::WriteExcel;
my $input = $ARGV[0];

[code]...

View 5 Replies View Related

Programming :: How To Write To A File With Specific Indentation Through Php

Dec 12, 2008

I am a beginner with php ,trying to work my way through.
I have a file to be written with particular indentation and by appending some special characters...
this is the o/p file i wanted. could anyone please guide me as to how i can write it? code...

View 1 Replies View Related

Programming :: How To Write A Lds - Linker Script - File?

Oct 13, 2010

I first found something called lds(linker script) file.

And now I am willing to do a test with __attribute__((section)) to make a function stay in a private section. Sounds fun to me.

Part of my source code looks like this

By objdump, I didn't find a section called "my_own".

View 2 Replies View Related

Programming :: Write Output Of Two Commands To A File?

Oct 12, 2010

I'm writing output of top command to a file However since top does not provide time I would like to append the 'date' command and then write all this to a file.

so something like top -d 1 -b; echo 'date' >>file

View 1 Replies View Related

SUSE :: Writing To Log File Affecting Performance

Apr 8, 2010

I have 3 c files(one of them forks out 5 instances) all writing to one log file. Now to avoid the confusion of opening and closing in each application or instance and running into a situation of not having closed a file I decided to open and close the log file inside the log function for each write.

So what I do currently is fopen, flock, fwrite, unlock, fclose for each write. All the log messages from all the files get written fine and there are no errors but I see a performance hit. The applications talk to each other using SHM(shared memory). So when I try to set a timer and check number of messages lets say I get X messages. Each time I remove or add a log call the number of messages changes. When it is a 1 sec or 5 sec timer it doesnt make a very big diff..few hundreds but when I check it over a longer period..every log call added decreases 1000 messages in count. So I want to know what is an efficient way of implementing the custom log across the application.

View 6 Replies View Related

Programming :: Perl - Writing To File - Keep Open Or Only During Write?

May 24, 2011

i am working on this thread: [URL] if it is better to open a file every time i need to write to it or should i keep a file open the whole time and when i am done with the script, close it and sendmail it out?

Or i just thought of this: i could keep concatenating to a string and just sendmail when done.

View 2 Replies View Related

Programming :: Check If The Content Of A File Is "1"?

Feb 7, 2010

i want to close the program if the content of the file /tmp/file_name is 1 (just the number 1).

dont need to check all the time, just when start the program.

something like this:

Code:
"read the /tmp/file_name"
"check if the content of the file_name is 1"
"if not, do something"

what i need is very simple to do in shell script:

Code:
go=`cat /tmp/file_test` # "cat /tmp/file_test" read the content of the file_test
if [ "$go" -eq "1" ]; then # if the content of the file_test is 1
echo "ok, ready to exit now"; # now i can put the exit command
fi

but i dont know how to do the same thing in C...

View 11 Replies View Related

Programming :: Write An If Statement For The First Line Of A Text File Bash?

Feb 15, 2011

At the moment I got my md5sum checking working which I write to a text file and see below.

If the md5sum works it will write the output to check2.md5 test.txt: OK

If the md5sum fails it will write test.txt: FAILED

How do I write if statement to check the output whether or not the md5sum failed or not ?

check1="/home/ops/Desktop/test1/check1.md5"
check2="/home/ops/Desktop/test1/check2.md5"
cd /home/ops/Desktop/test1
md5sum test.txt > $check1

[Code]....

View 2 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved