I study about file systems using on Linux and I try to implement file system format:ext2I'll implement virtual disk, And format as file system - that is implemented. So here is a problem. I want to know that How I mount this virtual drive that I implement ?I'm not asking detail codes, but I want to know about fundamental principle of "mount" disk. What is the fundamental principle of "mount" disk?
View 7 RepliesI am trying to set up an automatic backup using rsync and a publickey SSH, which requires using an empty password on the private key. I would like to lock down the key on the server so that it can only run rsync, but my attempts to use a forced command (or any other option such as no-port-forwarding) do not appear to have any effect when I run ssh -v.
I am currently debugging using the following line in ~/.ssh/authorized_keys
Code:
But when I connect, it opens up an interactive command prompt and does not display the "goodbye world" that I expect.
I am running an OpenSSH server on Ubuntu 10.04
I have followed following steps to implement, ftp upload by test1 user.
Code:
1. Add group ftp-users
# /usr/sbin/groupadd ftp-users
2. User test1 has been added to the group of ftp-users with /home/ftp-docs as home directory
# /usr/sbin/usermod -g ftp-users -d /home/ftp-docs test1
3. Ownership and permission of /home/ftp-docs has been changed to provide read/write access to user test1 and group ftp-users
# chown test1.ftp-users /home/ftp-docs
# chmod 770 /home/ftp-docs
But My intention is for the user who login with test1 user privileges, he should not be able to browse any other directories say /, /var /etc etc. Also he should not be able to change to any other directory. How can I accomplish this ?
How can we implement HMIPv6 in ns2? Can we adapt it directly by implementing MIPv6 or we need any ,for example HMIPv6.cc?
View 7 Replies View RelatedIs there any function like mkdir() or link() for command ls? If not, how is ls implemented?
View 4 Replies View Relatedhow to mount an ISO image on my downloads folder manually using commands.
View 3 Replies View RelatedHow would I ensure that whenever any user changes the password it should meet following.
1)It should be more than 7 Characters.
2)Atleast one Upper case character,digit and special character present.
3)Password is not same as username or dictionary word .
4)User should get email after changing his password(I have already setup mail account and tested the setup).
Code:
Distribution Detail
# lsb_release -a
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: EnterpriseEnterpriseServer
Description: Enterprise Linux Enterprise Linux Server release 5.2 (Carthage)
Release: 5.2
Codename: Carthage
# uname -a
Linux OFSMUW-VMGR-51 2.6.18-92.el5PAE #1 SMP Fri May 23 22:26:05 EDT 2008 i686 i686 i386 GNU/Linux
Does anybody know how to implement packet reordering in NS2? I would be very glad if someone provide me with appropriate tcl script or give a link.
View 3 Replies View Relatedi want to implement different mobility models in ns2, but i can not it
View 2 Replies View RelatedI've mounted a kind of proxy to map some cifs folders, 150 aprox. It umounts and mounts everything each hour, to check on changes on a configfile managed by a secretary, she just edits a file with names and I prepared a cron to notice the new mountpoints. It's a debian, no desktop , no nothing else. Just mount.cifs and apache2 to let the master webpage access to some files on each user samba home. The server has 4 cores and 2Gb of RAM. It's brand new, but it goes very slow.
[Code]....
Does anyone have an idea why is that working so slow? The apache is working well, it's the shell which is working extremelly slow.
The only reason why I don't use Linux (even though I prefer Linux over Windows, and can do everything faster and more efficiently) is because each time I try to learn about dm-crypt I give up.
Can someone point me in the right direction for full OTFE on Linux (like TrueCrypt)?
I would like to create the shell which would support the LS command in C++. And the way the command prompt can be changed.
View 7 Replies View RelatedAm configured SVN on Ubuntu 10.04 ,It's Working fine ;svn access method is svn://ipaddress .In this method am not encrypting the password ,Currently my passwd (/homesvnMyProject/conf )file like that [users]test = testNow i want to Implement the password Encryption for any users, without implementing svn+ssh:// method
View 1 Replies View RelatedHow can implement pfexec in Linux? Can i use sudo in Linux?
View 1 Replies View Relatedhow to implement proxy server with firewall and the client users should be authinticated by asking username & password while opening their web browsers and finally i want to see the websites visted list of all the client computers On cent os 5.3
View 1 Replies View Relatedi am new to ns2, i want to implement leach algorithm(MIT uAMPS) but i am unable to know how to install ns-2.1b5 version for it.but i successfully installed ns2.29 in fedora14.
otherwise please intimate what linux flavour will be suitable for ns-2.1b5
I want to implement squid with quota restriction based on username.
View 4 Replies View RelatedHow do I configure my Debian installation to mount external USB drives to mount points based on the volume names of the drives? For instance, if I have a thumb drive with the volume name of "SWORDFISH," how do I have Linux mount it at /media/SWORDFISH? I'm aware that this can be setup in FSTAB, but that requires that I know the UUID of the device beforehand and that I take the time to set each external device up in FSTAB first. That does nothing for me when I have a thumb drive that has never been plugged into my computer before.
This seems to be setup by default in Ubuntu/Kubuntu, but is not working for me with a fresh installation of Debian Squeeze and KDE4. I've spent the past 2 hours Googling for a solution and have turned up nothing. UPDATE: My results are inconsistent. Sometimes Debian mounts devices to mount points based on the volume names, and other times it gives them generic mount points (e.g. /media/usb1).
I am trying to setup fstab to automatically mount my NTFS partitions. I have used various Mount managers to create the entries in fstab. The fstab seems fine, but when mounting at boot or even via Nautilus I get the error message that I do not have permission to mount the disk.
1) Can this permission be set in the fstab file? If so what is the syntax of the fstab entry?
2) If not, is there a tool i.e. GUI to set the mount permissions?
I'm not really sure this is the right category for this post...
I've been thinking and reading but I really don't find a solution, and this is why I decided to post here. I'm not a newbie using Linux but I know absolutely nothing about nfs and related stuff. If explanations are not clear/precise I'm sorry and absolutely open to explain myself better (I'm really desperate, at this point).
I'm running a Debian in a VirtualBox inside a RHEL5. To supply space to the virtual machine I'm trying to mount a disk (? maybe not?) that I created in the RHEL.
In RHEL: I created a directory /some/path/dir and I granted access to it from the VM (edit /etc/exports file and restart the nfs service)
In Debian: I created a directory to be used as mounting point (mkdir /other/nice/path/dir) and I tried to mount (mount -t nfs -v redhat:/some/path/dir /other/nice/path/dir). What happens next is the following:
mount.nfs: timeout set for Thu ...
mount.nfs: text-based options ...
mount.nfs: mount(2): Input/output error
mount.nfs: mount system call failed
Now, this Input/output error is too vague to trace where the problem is, but I really have no idea about how to go more in depth (are there logs somewhere? What should I look for? ... ...).
I have two internal hard drives.I just installed Debian Lenny in the smaller 80GB. But when I try to access the other hard drive it shows:
"Invalid mount option when attempting to mount the volume"
info:
-The 80GB is on dual boot with Windows 7 and Debian Lenny.
-The 500GB secondary hard drive is NTFS filesystem.
I have a partially completed interpreter that has first-calss functions and can store scopes in variables. That way it is possible to implement a simple class like this:
Code:
MyClass = func () {
value = 0;
setValue = func (x) value = x;;
[code]....
But what about inheritance, and what if I want to know the type of the object?
I want to implement CBQ in my RHEL5 server so that i can manage my BW.
View 4 Replies View RelatedI am doing real time programming in C++, under Linux. I have two processes, let me say A and B. A process is being started periodically, every 5ms. B process is being started every 10ms. The process A is doing data processing. The process B is reading that data and displays it. I am confused about how to run periodically processes. The problem is that the period of process A should be as much as it is possible accurate (5ms). For the process B it isn't so important. I have created independent processes, each in one .cpp file, and I am starting them from bash file. Is that OK? I don't have to make child processes in order to have parallel processes?
View 1 Replies View RelatedDoes anyone have a acl patch for cvs-1.11.22-5.el5.I need to implement rw acl on branch and tag names.
View 2 Replies View RelatedI configured mysql in RHEL5.1 and I tested it , it workks well, but I wish to exploit it in graphical mode. Can you assist me to implement the phpMyAdmin for me to use it in graphical mode?
View 4 Replies View RelatedHow I can implement quota for my webproxy users in squid?
View 5 Replies View RelatedI want to implement kgdb on 2.6.27 kernel.but I am not able to get the patch ffile for this version.. where I can get patch file gor kgdb over Ethernet.
View 5 Replies View RelatedSo basically, there is a really cool writing system I have been working on. It could be viewed (for simplification purposes) like an encryption method for the Latin script.
Facts about the writing system:
It has a little over 300 symbols.
It is syllable-driven.
It is highly compositional (eg. "c", "ca", "cae", "ca " and "ci." all map to different symbols - and NOT by overlaying elements)
Symbols have medium graphical complexity (comparable to Korean Hangul, or Japanese Hiragana)
Has a rather complex set of diacritics (~10, some of which can go on any symbol)
Has no ligatures
How transliteration occurs:
Sequences of Latin symbols map to certain symbols. Example below:[G][rou][p ][hu][g.]Characters sequences between "[" and "]" map to a single symbol (so it would take only 5 symbols to write "Group hug.").
How I want it to work:
I would like to have a daemon that: Intercepts all text displayed on the screen.
Converts it to my writing system (changes letter sequences with individual Unicode codes)
Leaves unsupported symbols unchanged.
Displays all the text on the screen using my font and characters intertwined with the fonts and characters left unchanged.
For example, if you take the following line of C++ code:for (i = 1; i <= n; i++)
I would like it displayed like this:[fo][r ]([i ]= [1]; [i ]<= [n]; [i]++)
Bold-symbols should be in my Unicode font with special symbols defined for this writing system, and the rest should be in its original font and encoding. Also, I would like this encoding to hold for display-purposes only. The data in the memory should remain unaffected. This also means real-time adjustments: if I open a text editor (say, from the OpenOffice Suite) and I start typing, I would like to see what I type encoded with my writing system, even though the document actually contains Latin letters. This also means that the symbol immediately before the cursor may change as you type.
I have these but not working.
size_t count_words(const std::string& s)
{
std::istringstream is(s);
return distance( std::istream_iterator<std::string>(is),
std::istream_iterator<std::string>());
}
and
std::string s; // word count
unsigned int wordno = 0;
while(getline(myfile, s))
{ ++wordno;
if(s.empty())++ wordno;
else wordno += count_words(s);
std::cout << s << '
';
}
myoutput1<< "Number of words : " << wordno << '
';
myoutput1 << "
Word" <<" " <<" Occurrence" <<endl;
myoutput2<< "Number of words : " << wordno << '
';
myoutput2 << "
Word" <<" " <<" Occurrence" <<endl;