Code:
dd bs=8192 if=Image of=/dev/PS0
In the above command, I cant able to understand the option "of=/dev/PS0"
Whether it means,
1) to write the input file "Image" in to "/dev/PS0" of the Floppy device
or
2) to overwrite the same input file "Image" in a file format ("/dev/PS0") of Floppy.
I am trying to make a floppy image with a working file system so that I can test a 2 stage boot loader. When I attempt to mount the floppy and then cp the second binary over to it, mount gets all unhappy. Here are the steps I am trying to use:
dd if=/dev/zero of=floppy.img bs=512 count=2948
mkfs.vfat floppy.img
dd if=boot1.bin of=floppy.img bs=512 count=1
[Code]....
I am trying to upload some pics on my Facebook account using Firefox. When I click on Facebook's file upload icon, Firefox bring up a 'File Upload' window. I noticed that smaller image file is previewed on the lower right hand corner, while bigger image file is not. Is there anyway I can change this behavior or maybe change what Firefox is using to browse my files?
View 2 Replies View Relatedi want to know why do we need to patch files based upon diff when we can directly overwrite the old file with the new file.
View 4 Replies View RelatedWe have some large files with sampling data in it. Don't want to delete these files. But want to quickly overwrite the file with 0s and/or 1s and preserve the original file size.
View 3 Replies View RelatedAsuming I have two files, one large file and one small file, I want to write the smaller file to the large file without overwriting the remaining part of the larger file.
Both are binary files, and the large file can become very large, so I want to avoid copying the whole file, as that will take some time. Is there any standard Linux console utility to do this, or do I need to write it myself?
I try to write to a file "date > file" but Linux says 'cannot overwrite existing file'. I tried chmod 755 but still cannot write to the file. What should I do?
View 2 Replies View RelatedFor example I want a file to be processed by sed, and then overwrite the file with sed's output. I would try this:
Code:
sed '<regex goes here>' myfile > myfile
But it doesn't work as expected, instead it empties the file (I am thinking that as the first byte comes out of sed, it overwrites the whole file and sed has nothing more to do). How can I make this work?
I'm getting some funny behavior from ffmpeg when I'm trying to increase the volume of an mp3 file and have it overwrite itself. For example, if I execute the following command:
Code:
ffmpeg -i name.mp3 -vol 1024 -y name.mp3
it will code the first 5 seconds or so and then quit with:
Code:
[mp3 @ 0x2db16d0]incomplete frame
Error while decoding stream #0.0
[Code]....
I have written a spec file for packaging my application in an rpm, but it reports a conflict when I am trying to update my service script in /etc/init.d/. This is a file that I do need to update/replace so how might I force the rpm to do that?
Code:
Summary: A program that increases WAN performance.
Name: packetsqueezer
Version: 0.3.05
Release: 1
[code]...
I've recently left Windows behind for good and have come to Linux (Ubuntu.) However, I've run into problems after trying to dual boot windows 7 and ubuntu. When I restarted my computer, I got a black screen with white text reading "Minimal BASH-like line editing is supported". I have the Ubuntu live cd and was able to try Ubuntu without having to install it, but after I put in a flash drive with Windows 7 on it, the Ubuntu CD has stopped working entirely.
The weird thing is, the computer that I installed Ubuntu on, already had Ubuntu and Windows 7 on it. And every OS was booting successfully. The reason I deleted the Ubuntu that was already on the computer, is because there were many different versions. I wanted to do a clean sweep and only have Ubuntu and Windows 7 installed on the computer. I know that if you try to dual boot Windows 7 and Ubuntu, Windows will overwrite the GRUB file, making it unable to dual boot.
My situation:
Host A: need sudo to access the file
Host B: need sudo to access/overwrite the target file
How to copy a file from host A to host B without creating temporaries? Is it possible?
since arch has started using python3, bleachbit is broken, so i am looking for a system cleaner to replace it. i need something that will overwrite file contents and clear firefox cache + the all the normal functions of a system cleaner.
View 8 Replies View RelatedI m Trying to get vsftpd usergroups to work i accidentally moved a file called passwd from /etc/vsftpd/ to /etc/, resulting in my root access is destroyed! how to restore the passwd file so i can keep working, or do i have to re-install the entire box?
View 4 Replies View RelatedI created a Symbolic link for ifstate from /etc/network/run to /var/run (/var/run is mounted as tmpfs) and I can write to and from the file perfectly fine, but when trying to start the network I get "Failed to overwrite statefile Read only file-system". I double checked permissions to see if that was the problem, but it does not appear to be
View 5 Replies View RelatedI am curious if perhaps I am doing something wrong extracting pages from a pdf doc using pdftk and creating a new file. I am only extracting the odd pages from the file and outputting them to a new file that is now only 20 pages instead of the input's 40 pages, yet the new output file is still 1.4Mb in size, the same as the original.
It seems strange to extract only half the pages of a large document and end up with a result that is the same size. how to streamline the resulting pdf's using pdftk?
BTW this is the command I am using, in case perhaps I am missing an option to optimize file size or something:
Code:
pdftk A=ch15.pdf cat A1-40odd output odd.pdf
When I try to copy PDF files from one folder to another folder, it give me this error: "Error while copying "2004-SNUG-Europe-paper_...log_DPI_with_SystemC.pdf". There was an error copying the file into /media/CCDCE66BDCE64F70/Backup Master/Heterogeneous_cosimulation/Documentation" "Error splicing file: Input/output error" What is the reason of this error and how can this be fixed?
View 9 Replies View RelatedI have a 7.2 GB file (VMWare virtual machine file) that I am trying to copy from its original location to the another folder OR to external hard drive...each time I try to do this, I always get the following error after the copying process reach 'exactly' 1.4 GB
Error reading from file input/output error
And I have to either Cancel or Skip
I've tried to split the files to smaller pieces but the idea didn't work as I still get the same error whenever I try to compress/ split or do any operation with this file. how I can copy this file?
I am splitting a file based on the values read from an input file. The below one is the script.
1)How do I add the header which is present in the original file to the new split files created?(For eg. pharmacyf conatins header as table column names. The new files created (ODS.POS.$pharmacyid.$tablename.$CURRENT_DATE.dat) are without the header).
2) Also the script is creating 0 byte files for the pharmacyids which are not available in the intial file? Can this be avoided?
for pharmacyf in *
do
tablename=`echo $pharmacyf |cut -f4 -d'.' `
while read pharmacyid
do
grep -w $pharmacyid $pharmacyf >> $OUT/ODS.POS.$pharmacyid.$tablename.$CURRENT_DATE.dat
done< inputfile
done
I am new to shell scripting.What i am trying is to write a shell script which take the input file and output should like as mentioned below.Output file should have data till SOK (marked in red)from every second line and then the selected data(marked in green) from 4th line.So selected data from 2nd and 4th line in one line of O/P file and then similarly selected data from 6th and 8th line in second line of O/P file.Input File:
3c3
< c1111;11.11.11.11;pOK;SOK:abcde;Universe:aa
---
[code]...
I recently upgraded my file/media server to Fedora 11. After doing so, I can no longer copy large files to the server. The files begin to transfer, but typically after about 1gb of the file has transferred, the transfer stalls and ultimately fails with the message:
"Error writing to file: Input/output error"
I've run out of ideas as to what could cause this problem. I have tried the following:
1. Different NFS versions: NFS3 and NFS4
2. Tried copying the files to different physical drives on the server.
3. Tried copying the files from different physical drives on the client.
4. Tried different rsize and wsize block sizes when mounting the NFS share
5. Tried copying the files via a different protocol. SSH in this case. The file transfers are always successful when I use SSH.
Regardless of what I do, the result is the same. The file transfers always fail after approximately 1gb.
Some other notes.
1. Both the client and the server are running Fedora 11 kernel 2.6.29.5-191.fc11.x86_64
I am out of ideas. Has anyone else experienced something similar?
Everything in Linux is a file, right? And everything can be represented by a file? Is there some way I could create a block device file that represents (i.e., provides an interface to) this image file? If so, then I could use fdisk on the device file to split it into partitions, format the partitions, and then mount them as directories. I could create a file system within a file system, which would be fun.
View 2 Replies View RelatedI am trying to input from a file. The file's layout has three columns; a department number, a first name and a last name, each separated by a space, for example:
Code:
781-89-4271 Amy Balduff
839-98-4072 Brian Becker
846-43-4284 Christina Brendon
[code]....
I need to input the words through separate variables because I will be passing them to other programs as soon as I can figure this out.
This is a question for those that use pdftk. I've been using it for about the last year or so to combine manipulate PDFs and it is awesome. Until today, mostly what I've been using it for has been for less than five files. Today I have been working on a manual at work which consists of about 100 separate files with a total page count of 167. The pages are a mix of 8.5x11(inch) and 11x17(inch). The pages needed to be in a specific order, the only way I could think of to do this instead doing this all in the CLI, I created a text file which contained a list or sequence of the files. To make it easier for me to read and group, I first put each file on a separate line.
chapter1_separation_page.pdf
file1.pdf
file2.pdf
[code]....
I have list of usersnames (500) in user.txt file. how do i use ldapsearch utitlity from this input file and output each and every users OU belongings in output.txt file.
View 2 Replies View RelatedI upgraded my OpenSUSE 11.2 KDE 4.3.5.x to KDE 4.4.2 and am having a couple of issues. Not sure if I am just a bit stupid or impatient figuring them out or what... In Amarok, I used to be able to input or edit the path name under Files (i.e. Browse Local Harddrive for Content). This allowed me to quickly copy and paste a location from Dolphin / Konqueror etc. into and from Amarok for quick access across multiple applications (Especially when sorting out things). Somehow this is either missing (Not possible anymore) or I am to impatient or stupid figuring this out.
View 2 Replies View RelatedWhere does input to sudo go? I mean when we give password to sudo prompt where it actually goes? If it goes to a file what is its name or what is its file descriptor?
View 1 Replies View Relatedwhen I try to print the current keyboard layout with "xkbprint -o layout.ps" it gives me the error mentioned in the subject. I also remember printing it a couple of weeks ago (and I'm sure I didn't specify any additional options), but now it just doesn't work. Everything I read on the Net assume this command prints the current layout, and so far I haven't discovered even the slightest mention of this error. It's a trifle, but it drives me mad. What could I be doing wrong?
View 1 Replies View RelatedWrite a program that requires the user to input the name of a file as an argument. If the user fails to include one argument it should make use of a thread that handles a signal. The signal handler should tells the user Incorrect number of arguments and then calls the terminate signal on the process.
If the numbers of arguments are correct then the program should allocate memory space to the file (5MB) and create a child process that requests the user for a character that it should send to the parent. The child should keep request for data until the user keys in the character O. During each request it should pause for 10 seconds, send the character to the parent and then requesting again for another character.
The parent should get the character from the child. Do not make the parent wait for the child to finish requesting for data. Make use of pipes to facilitate communication between the parent and the child. A second child should be created to read and display data from the file. Make use of any appropriate Inter Process Communication technique to ensure that the second child and the parent do not access the file simultaneously (Mutual exclusion).
I'm writing a program which now accepts user input:
Code:
echo "Enter a date in the format YYYY MM DD hh mm ss."
read gregyr gregmo gregdy greghr gregmn gregsc This lets the user input a date and time, such as 2011 06 21 15 12 45, and have each number assigned to their corresponding variable. Later in the program, these variables are put into an equation, and then the terminal spits out the answer. Now I have to have the program read all of the lines from a text file, which is in this format, assign the variables.
