I having been searching for a way to create an empty or blank iso file, so that I can mount it, and have a backup application think it's a blank CD. I am tired of wasting CD's by having the application write a recovery CD, just for me to turn around and export it to an iso image to be stored in a online archive, and then throw away the physical CD.
View 5 RepliesI need to know to to make a smaller .img file. I want to put ubuntu on my android phone (androlinux.com), but the ubuntu.zip file was to big to fit on my sd card. The .img file is too large, so I want to make a slightly smaller .img file to fit on the sd card.
View 2 Replies View RelatedI am a final year student doign Computer systems engineering and just been introduced to linux. While still strugling to catch up with the commands, I am now given an assignment under shell scripting.I seriously am strugling to understand this question, can you please assist me.Here follows the assignment:
Operating Systems III
Some tips
e.g. (test if a file is empty, if it is then display "file is empty" otherwise display
[code]....
I'm trying to use tar to tar files before transfer, so I can keep the entire file path rather than losing it along the way. However, when I try to tar an empty folder, it tells me that it is cowardly refusing to create an empty archive. I want to keep the empty folder on the other end, but don't want to put anything else into the archive to make it non-empty. Is there any way to do this?
View 1 Replies View RelatedI have a large file that a process writes to. I would like to empty that file. If I delete it the process will stop writing to it. Just flush the content but keep the file.
View 9 Replies View RelatedMy cron job is executing the below mysqldump command but it produces an empty sql file. However, when I run from the command line, it works as expected.
Code:
15 6 * * * root mysqldump -uroot -pXXXXXXX mydbname | gzip > /home/dbbackup/db_`/bin/date +\%Y\%m\%d\%H\%M`.sql.gz
I'm on CentOS 5.4 and use "env EDITOR=nano crontab -e" edit my cron (then paste the above command.
I have set up a cron job in linux server using the command 'wget -q -o wget_outputlog url'
But on every run, an empty file being created at root.
How to stop this.
Does anyone know why files in my /tmp directory are not able to rm even using root login? not only that, I can't even chmod or do anything to files in /tmp directory... it always saying "read only file system" warning
View 8 Replies View RelatedI've noticed that when I run:
davek@linux-kw2x:~> df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 20641788 8427780 11165368 44% /
udev 961204 192 961012 1% /dev
/dev/sda3 217642344 4037944 202548468 2% /home
davek@linux-kw2x:~>
I have 44% used. It should be much smaller, under 10%. How do I empty the /tmp file or other file to free up space?
I was just testing specifying limit on file size to a user and have added the following to /etc/security/limits.conf bob soft fsize 100 This basically should have said not to allow bob to create anyfile greater than 100Kb in size.
But the interesting thing is, if bob already has any file which is greater than 100Kb in size, it even doesn't allow to log him into the system both from console and SSH. Also nothing is logged in logs.. How do I configure it so that, bob can login to the system even though he has any file greater than 100Kb (but doesn't allow him to create file which are greater than 100Kb) ??
I am testing my ftp server configuration.Anonymous download works , however anonymous upload does not.I am getting the following error message from both Windows and Linux 5.4clients : 553 cannot create the file.And i am running Fedore 12.
View 3 Replies View RelatedI am currently using a command like this to remove blank lines and lines which contain (not necessarily begin) with a #. Is there a better/simpler command?
cat /etc/apache2/default-server.conf | sed /^$/d | grep -v '#'
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 have this nasty habit of refreshing desktop in a quick succession by right-clicking and selecting 'Refresh',on my XP system at office.(And,iam sure most of us do the same).With Ubuntu,if a right-click on desktop slowly and select 'align by...',it simulates the XP refresh action as explained above.But,if i perform the same action rapidly,it takes this first option from right-click context menu,which is 'Create Folder',and results in an empty folder being created on desktop.I tried double right-clicking and again it created an empty folder.Is there any workaround to handle this.I mean:Can the right-click context menu items be shuffled so that the 'Create Folder' option is moved from 1st place
View 9 Replies View RelatedI was copying an .avi file to an external hard drive and half way through the copy the drive reset and required remounting. Consequently I have an empty .avi file on the hard drive. I tried to recopy the file and overwrite, but I keep getting 'Could not write to media/harddrive/filename.avi'. I tried to rename to file to be copied but got the same response, I cannot delete the empty file either, as I get an error telling I cannot delete it. I have tried to do this as the user and root with the same result.Any other file I tried to copy onto the external hard drive is fine, just this one zero length file and the file I was trying to copy, the original of the file. I also tried to delete the file on another computer but couldn'tExternal hard drive is a WD elements ntfs, which works great except for this glitch.
View 3 Replies View RelatedI have this file: 1.txt, with this contents:
Code:
test
mycomputer
I just try change the string "mycomp*" by "othercomputer":
Code:
sed 's/mycomp.*$/othercomputer/' 1.txt > 1.txt
but sed command empty the file.
[Code].....
I am using embedded Linux. File open is successful. The file has all the permissions. It is present in current directory too. The size is about 27KB. But s.st_size says it is zero.
inputFileName = "abc.mp3";
FILE* inFile = NULL;
inFile = fopen(inputFileName, "r+b");
[code]...
Does anybody know why isn�t anything on the /var/log/boot.log file. After the boot I saw some services that fail to load and looking for more detail data on the boot.log file I couldn�t found anything this file is empty. This is My syslog.conf file:
Code:
kern.* /dev/console
*.info;mail.none;authpriv.none;cron.none /var/log/messages
[code]...
I was checking my syslog.conf file recently and it seems that it is an empty file >_> it shouldn't be correct?
View 2 Replies View RelatedI have setup a local repository containing several .rpm files. I created a comps.xml file outlining the category and groups for the local repository. However, when I issue the yum grouplist command, I get the following error:
Failed to add groups file for repository: localRepo - comps file is empty/damaged
However, if I try to install one of the the packages in the repository, it works just fine.
Here are the steps I took to create the repodata:
The comps.xml and repository are stored in the directory:
/var/www/html/myrepo/x86_64
cd /var/www/html/myrepo/x86_64
createrepo -g comps.xml .
[Code]....
I'm trying to write shell script to use etc/init.d In fact, my application has written by java and I have made the fat.jar (etest.jar)file as executable one and after I wrote the small script to run it background (etestruner.sh) that is,
Code:
#!/bin/sh
java -jar /root/les/run/etest.jar >/opt/etstout.out 2>&1 &
And after I wrote the service script That is ,
Code:
#!/bin/sh
#
# Startup script for epict
#
# chkconfig: 2345 25 88
[code]....
I tried with google to solve this issue but did not get any result.
Using awk I pull the first field of a random line from my datafile.myvar1=`awk -F" " 'NR=='$randline' {printf "%s", $1}' myfileThis works fine. The problem is there will be empty lines at the end of the file. Rather than using awkto filter out blank lines I would like to figure this out first.So I test $myvar1 for a blank string after setting $randline to one that I know is blank:test -z "$myvar1" && echo "true" || echo "false"But, this returns "false"? So the string is not zero length. Why? It's a tab-separated file. Is awk storing the tab with the $1 field or something.This is where I get headache. I try to echo my variable to see what it looks like.
echo "$myvar1"
outputs: nothing
echo "My variable is [$myvar1]"
outputs: [y variable is [
Why is the closing bracket at the beginning? What character could be stored in $myvar1 that would do such a thing and how did it get there?
why I cant seem to create a dot file (a file that starts with a dot) in my /tmp folder even with root priviledges. I installed F-Prot for linux & when I try to do a scan it complains it "can't stat a file" it seems to want to create & quits. So I tried creating it my self but it wont create a file that starts with a dot it seems. I also tried "chmod go+rx /tmp/*"
This is the error
root@JASONS-BRAAIN:/opt/f-prot# /opt/f-prot/fpscan -l
F-PROT Antivirus version 6.3.3.5015 (built: 2009-12-23T13-43-55)
FRISK Software International (C) Copyright 1989-2009
Engine version: 4.5.1.85
Arguments: -l
[Code].....
I just installed proftpd using webpin but when i tried to gonfigure it ,i figured out that the configuration file proftpd.conf is empty, is it about permission ?i just dont get it!
View 1 Replies View RelatedI have a linux script that generates a string and prints it to the console. I want this string to be the name of a file and open it for editing in vi. How can this be done?
View 3 Replies View RelatedHow do I create a LiveCD from an ISO file?
View 2 Replies View RelatedI am working on JNI(Java Native Interface) on fedora 7 where i need to create a .so file of .c.(For example Hello.c to Hello.so). But i am not getting options to be used with the "cc" command. What option or the command.
View 6 Replies View Relatedi'm trying to use tar to create a zip file but everytime I try using the command it just dumps out to the screen... I know i'm missing something simple but darned if I can figure out what it is. The command i'm using:tar -cpvz archive.bz2 /directory_name/*
View 5 Replies View RelatedI am using NetBSD-5.1. 1. I wanted to know what happens internally when we create a file in linux. ?The header file STDIO.H present in "src/include/stdio.h" contains a "FILE" structure with various members like _p, _cookie, etc. 2. wanted to know how does internally memory gets allocated for them.
View 1 Replies View RelatedI cannot redirect output from commands such as iptables, iptables-save, and ifconfig. For example, any of the following DOESN'T work ( as root ):
Code:
iptables > tmp
iptables-save > tmp
ifconfig > tmp
The file tmp is ALWAYS blank, that is, 0 bytes in size. Wackier things DO work, such as:
Code:
echo "`iptables-save`" > tmp
iptables-save | tee tmp
Other commands like:
Code:
ls > tmp
DO work as expected.
Note that this problem happens regardless if I log-in remotely via ssh or locally on the computer in question. I am clueless as to what is causing this. Any ideas?The box is running 2.6.25-14.fc9.i686 and boots to runlevel 3. The modifications I've made to the box since installing the OS are things like compiling/installing latest OpenSSH,OpenSSL,httpd,BerkeleyDB,subversion,zlib etc -- nothing really out of the ordinary I'd say.