General :: Complete Documentation Of File Mode Bits?
Jan 27, 2010
I'm trying to figure out the effects of some of the more unusual combinations of modes and file types. For instance, what does SGID do on a directory? What do SUID and SGID do on files that aren't executable? What effect does execute have on a FIFO?
Does anyone know where I can find the complete documentation for file modes under Linux? It's not in the chmod(1) man page. I can't find it in the documentation directory of the kernel tarball either. I thought it would be in the POSIX specs, but I can't find it if it is.
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Jun 15, 2010
I have a dual boot (WinXp, Ubuntu) on my machine. Unbuntu is installed in the same partition of WinXp. Evertime i have to access a windows file or folder i mount the windows drive using the following command
Code:
sudo mount -t ntfs -o nls=utf8,umask=0222 /dev/sda1 /media/c
This works just fine. My problem is that all the files are loaded with -rwxrwxrwx and the directories drwxrwxrwx. I cannot change the file mode bits using chmod even in su mode. chmod incidentally works just fine and does not give any error. But the file mode bits are still the same.
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Jan 5, 2010
I'm quite new to linux and I recently (and courageously) upgraded the computer of my work from opensuse 11.0 32bits to opensuse 11.2 64bits.
Well, everything would be quite fine except that I still have some softwares 32 bits that have the 64 bits version available. I know that because, using YaST, I can see by the Installed software section that there are 'choices' of versions for some programs; these versions are 'i586' and 'x86_64', and many of them have the i586 version installed.
So, I wonder if there is some type of auto upgrade all programs which are i586 and have the matching x86_64 avaliable...
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Jun 19, 2010
when I reformat ubuntu, I use AptonCD to save packages and then restore them without downloading anything over again. what I want to know is: I have the 32 bits ubuntu installed and then I downloaded the 64 bits version. If i reformat to the 64 bits one, would the DVD saved aptoncd packages from the 32 bits work on the 64 bits installation?
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Sep 20, 2010
I installed ubuntu 10.04 by wubi. It works perfect until I installed and ran "startupmanager". I find that I can't enter ubuntu, even in recovery mode. The screen keeps showing "rstslog main process ended, respawning [fail]" and other text
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May 18, 2011
I am wondering if I can install a 32 bits guest Windows XP in VirtualBox in my 64 bits Ubuntu Natty host? I need a 32 bits Windows to run some programs.
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Nov 21, 2010
when my monitor turns off after 30 minutes, I cannot do anything after. We're talking complete lock down of Ubuntu 10.04 64-bit. Not even alt+printscreen+REISUB reboots the machine; I have to do a hard reboot (which sucks and is hard on hardware).
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Jan 5, 2010
Can I install Linux 32 bits on system 64 bits?
For example if I have cpu 64 bits, can I install ubuntu 32 bits?
If yes, all drivers will befor 32 bits, right?
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Jun 9, 2010
I just create a vm image with 2 CPUs to be used on a one CPU machine. it works great. Now, i am thinking about creating a 64 bits Redhat VM image to be run on my 32 bits machine. Is that possible?
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Jun 21, 2010
I notice this in all my machines (32bits and 64bits).
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Nov 3, 2010
I work for a company that makes portable devices running Linux and I was recently asked to make the underlying file system read-only for "security" purposes. Since the distribution is based on LinuxFromScratch, I know that very little writing happens at run time. So, even if the device runs on a usb flash device, I doubt that putting the root file system RO will be that beneficial. I am actually more concerned about a process actually breaking because it cannot open a file in RW mode than a process going rogue and filling the root file system with log files, etc. I'd really like to ear what kind of advantages disadvantages there really is with read-only file-systems.
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Aug 30, 2010
Below is a print out of my partition Table from Fdisk, in Cylinder mode, Sector mode, and then in expert mode?
Why in expert mode does it look like Partitions 2 and 3 share the same sector / hd / Cylinders? Is this OK?
Code:
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Aug 8, 2010
About 7 years ago I setup a Redhat system with 8 serial terminals and 8 serial printers, this is still running but I need to get another system running so the original can be taken down for maintenance. The printers are ancient Newbury data dot matrix wide carriage with 7 data bits receive 8 data bits transmit Xon/Xoff flow control. Now I remember setting the transmit and receive data bits as above but after 7 years can't remember where.
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Nov 28, 2010
Ubuntu in Windows 7 (64 bits) File system installed using Wubi I got Ubuntu 10.04 LTS intalled using Wubi. That means Ubuntu resides inside Windows file / folder system. It also means Ubuntu does not have its own partition. Here is what I found out:
1) It cannot detect wireless network unlike Win 7 on this same laptop. However, when I plug in ethernet cable, it was able to detect it. Is there a fix this problem?
2) I cannot see Windows folders. How do access windows folder from Ubuntu side and vice versa?
3) I forgot to set the disk space for Ubuntu during install and I think the default is 17 GB.Would this cause me problems? If so, what do I need to do? How do I expand the disk space for Ubuntu?
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Nov 16, 2010
I saw this forum post and I want to try it out so I went here and copied and pasted the following text into a file called test.patch.
Code:
---
Documentation/kernel-parameters.txt | 2
drivers/tty/tty_io.c | 1
include/linux/sched.h | 19 ++++
init/Kconfig | 12 +++
kernel/fork.c | 5 +
kernel/sched.c | 25 ++++--
kernel/sched_autogroup.c | 140 ++++++++++++++++++++++++++++++++++++
[Code]....
1 out of 1 hunk FAILED -- saving rejects to file linux-2.6/Documentation/kernel-parameters.txt.rej I'm not so good with patching so I am sure it is probably something easy.
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Jan 19, 2011
i have used debugfs command and "open -w /dev/sda1" command, but i did not close it. the file system is in read-only mode now.
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Jun 30, 2010
I want to know what's different between Fedora 32 bits and 64 bits.
Also, I want to know if I want to run 64 bits of Fedora, what do I need ?
just in case: My CPU is "Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz"
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Apr 14, 2010
I am looking for a distro that have good quality -not quantity- documantation. that is, It should be right, clear and even newbie can apply them.
Which distro is suit for it?
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Apr 21, 2010
It is sad to see so many tools undocumented, that even makes it hard for a professional to use it. Why write a tool if you are not going to tell anybody how to use it?
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Jul 6, 2010
Where can I find the documentation for RHEL 5.4 kernel 2.6.18?
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Oct 14, 2009
Has anyone heard of this distro? Is there any documentation online about running it from the live DVD? What I'm interested in finding out is if I can save settings to a usb drive and have it load the settings when starting up (like Puppy does).
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Nov 7, 2010
I am looking for some documentations to manage/ administer my Ubuntu installation.
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Sep 28, 2010
Does anyone know where I can find the complete VirtualBox .deb file for Lucid? That is the one that doesn't need an Internet connection to install VirtualBox.
I downloaded the .deb available from virtualbox.org but, when I copied it to a desktop I have without Internet connection I can't install it because it looks for a connection to the repositories.
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Oct 29, 2010
documentation on the "stable" war-horse OSs. I am impressed for example on the community support of Ubuntu, Slackware, and impressed by the formal documentation of Arch and Gentoo.
1. However, how does the documentation of CentOS/RHEL compare to some of the other distros? and
2. How about compared to similar OSs, like Debian
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Jun 10, 2010
I am very new in linux/aix scripting. I request you all to give me efficient pdf book or documentation for learning scripting.
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Dec 6, 2010
[URL] .and-installing
try to install and give a detailed documentation or screencast.
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Feb 21, 2011
I am trying to build a chroot to have 32bits application on a amd64 arch. but when I try the debootstrap command i get this error that I am unable to get through; here it is: debootstrap --verbose --arch=i386 sid /var/chroot/sid-ia32 I: Retrieving Release E: Invalid Release file, no entry for main/binary-i386/Packages
then i tried this solution: [URL] and i progressed but stopped again at one error: E: can't find checksum for packages file.
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Nov 7, 2010
What is a Linux command that I can run to programmatically return either 32 or 64 to indicate whether the processor is a 32 bit or 64 bit processor?
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Dec 27, 2010
I tried to install ns2.27 on my Ubuntu 9.10 64-bits version. I downloaded the gcc-3.3...amd64.deb instead of the one you recommend. When installing the debian files, I get this at the terminal
[Code]....
I don't see any errors but the file is not installed (I think) because when I go to synaptic they are not there. And trying to proceed with the ns2 installation results in error since I don't have the gcc3.3
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Apr 23, 2010
I have a CPLD (EPM240100T) chip that has data type of 16 bits, but the CPU access it using 8 bit. How do I switch the CPU mode (to 16 bits) to access this chip?
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