Search Results

Search found 33182 results on 1328 pages for 'linux port'.

Page 322/1328 | < Previous Page | 318 319 320 321 322 323 324 325 326 327 328 329  | Next Page >

• How do you synchronise huge sparse files (VM disk images) between machines?

  - by chrisdew

  Is there a command, such as rsync, which can synchronise huge, sparse, files from one linux server to another? It is very important that the destination file remains sparse. It may be longer (but not bigger) than the drive which contains it. Only changed blocks should be sent across the wire. I have tried rsync, but got no joy. groups.google.com/group/mailing.unix.rsync/browse_thread/thread/94f39271980513d3 If I write a programme to do this, am I just reinventing the wheel? http://www.finalcog.com/synchronise-block-devices Thanks, Chris.

  Read the article

• Why is "chmod -R 777 /" destructive?

  - by samwise

  This is a Canonical Question about File Permission and Why 777 is "destructive". I'm not asking how to fix this problem, as there are a ton of references of that already on Server Fault (reinstall OS). Why does it do anything destructive at all? If you've ever ran this command you pretty much immediately destroy your operating system. I'm not clear why removing restrictions has any impact on existing processes. For example, if I don't have read access to something and after a quick mistype in the terminal suddenly I now have access well... why does that cause Linux to break?

  Read the article

• how to google a symbol keyword like "$?"

  - by ZhengZhiren

  i saw a trick in a book: in a linux shell, we can use &? to get the return value of a command. For example,we run a command,if it exit normally, the return value is 0. And then we type $?,we will get 0 in the screen. i want to google this kind of usage, so i have to type these two symbol $? in the search blank.But the search engine just return nothing to me... i have looked at the google help page, but still can't find a solution. so my question is: how can i search with this kind of keyword. or if you can give me some advise of the usage of $? or sort of thing, that will be also appreciated.

  Read the article

• is it possible in this case to get two IPv6 networks to communicate over the IPv4 Internet?

  - by user239167

  I have a setup of a laptop connected to a cellular IPv4 network (3G usb dongle) and PC connected to another IPv4/IPv6 network. Both have been configured to run as IPv6 routers and each has its IPv6 network. The laptop connects to the Internet via the 3G network with IPv4 address (private one and it is mostly changing) on one interface and has the other interface on AP mode providing its own private IPv6 network (2001:db8:444::/64). The PC connects to the Internet via the organization network with both public IPv4 and IPv6 addresses on one interface and has the other interface on AP mode providing its own private IPv6 network (2001:db8:222::/64). Both running Linux Ubuntu. Is it possible to get the two IPv6 network (2001:db8:222::/64 and 2001:db8:444::/64) to communicate over the IPv4 Internet? Is openvpn of any good in this case to get IPv6 traffic over IPv4-IPv4 tunnel? Thanks for helping in advance

  Read the article

• Replacement for NIS/YP

  - by mdpc

  The company that I am working for is embarking on replacing the current locally developed NIS/YP structure with LDAP. We already have AD in house for the Windows stuff and would like to consider using an AD system. The AD people are quite restrictive and would not support extensive modifications. We have needs to have the replacement include the support the full capabilities of the NIS/YP suite include netgroups, login restrictions to specific servers for specific users or groups of users, consistent passwords between the *nix and Windows environment,etc. Our environment is a mixture of Linux (suse, RH, Debian), Sun, IBM, HP and MPRAS as well as a NETAPP. So whatever we use must be totally inclusive to all environment. We have looked at Likewise, but our management wants other alternatives to compare with. What other things should I be looking at and what is you assessment of the alternative? Thanks

  Read the article

• Manually forcing TCP connection to retry

  - by Vi.

  I have a TCP connection (SSH session to some computer for example) Network suddenly goes down and drops all packets (disconnected cable, out of range). TCP resends packets again and again, retrying with increasing delays. I see the problem and plug the cable back (or restore network somehow). TCP connection finally successfully resends some packet and continues. The problem is that I need to wait for a some timeout on point 5. I want to use my opened SSH session now and not wait for 5-10 seconds until it finds out that connection is working again. How to force all TCP connections to resend data without delays in GNU/Linux?

  Read the article

• How do I prevent 'net ads join' from doing DDNS update?

  - by genehack

  I'm using 'net ads join' to add Linux servers to an AD domain. The servers are multi-homed, with a public IP on eth1 and a non-routable private background network on eth0 (in the 172.20 space, used for netboots and installs and stuff -- no routing to the Internet on that network). When I 'net ads join', it appears that a DDNS entry is getting created for the 172.20 interface. How can I prevent this from happening? (FWIW, my powers at the AD level are very limited -- I can join servers and delete server records but that's about it...)

  Read the article

• What is the difference between yum, apt-get, rpm, ./configure && make install

  - by Saif Bechan

  I am new to Linux and am running CentOs. When I want to update or install certain software I came across three ways. Sometimes it's: yum install program rpm -i program.rpm wget program.tar.gz unpack ./configure make make install That last one is a real pain, esp when you come from windows where a program install is usually one click and then a nice guide. Now can someone please explain to me: Why are there so many different ways to do this? Which one do you recommend to use and why? Are there any other ways for installing programs?

  Read the article

• Critical (Unixlike) Distros for Sysadmin Hopefuls to Have Experience With

  - by Interwebs

  Hi All, I'm trying to learn to be a Unix/Linux Sysadmin, and am hoping to get some hands-on experience by setting up a few installs (VMs, old comps, and the like) at home and practicing administering them. I was wondering, in the experience of those on this site, which distros are critical to be comfortable with. Obviously, to a certain extent, they're all similar, but there are substantial enough differences between administering, say, Debian, OpenSolaris, FreeBSD, and CentOS. So, which distros are most important to practice with in your opinion? Which have had most demand/come up most often in actual work situations? Thanks!

  Read the article

• Disable passwd history feature with remember=0

  - by user1915177

  PAM version - pam-0.79 Is setting 0 allowed on "remember" option in /etc/pam.d/common-passwd file of pam.d module to disable passwd history feature? With "remember=0" in /etc/pam.d/common-passwd file, I am observing a memfault when running the passwd command as a USER. When browsed the source, the function in _set_ctrl in support.c file of pam_unix module handles wrong values of remember, but currently its not robust enough to handle 0, which is a wrong value. So the valid and only option to disable history feature, is to not include the "remember" option in /etc/pam.d/common-passwd file and not to set-up /etc/security/opasswd file? Could see in the following link mention of setting "remember" to 0 has no effect to remember value in "/etc/security/opasswd" file. =https://lists.fedorahosted.org/pipermail/linux-pam-commits/2011-June/000060.html

  Read the article

• Grub hangs intermittently on "Starting Up..."

  - by Griffo

  Hi all, I've had this problem for a while now. My linux server is set to wake-on-lan but occasionally it halts at Grubs "Starting Up..." and goes no further. This is not due to additional hardware being attached such as a flash drive or anything as I never plug anything into it. It may boot perfectly 40 times in a row and then hit this issue. Sometimes it gets the issue a couple of times in quick succession and doesn't happen for ages again. I'm not sure how to diagnose it since it doesn't seem to be reproducible. Any help much appreciated. Thanks

  Read the article

• My computer gets hosted when using 3G

  - by WeaklyTyped

  I recently activated 3G(UMTS) connection on my cellular network. I use Nokia S60 phone as a modem while connecting from Scientific Linux 6. While I am able to access net pretty well, the problem is my computer gets hosted. By using ip-address in a web-browser, anyone can access my localhost (running apache), this never happens with my wireline (ADSL) connection. Furthermore, even the Shell prompt changes from: [mach2@localhost ~]$ to [[email protected] ~]$ where XX.XX.XX.XX is the IP of the 3G connection. The very thought of putting my machine 'in the wild' is disconcerting. How can I rectify the situation without disabling services like apache, sshd and others?

  Read the article

• Which simple server virtualization solution to use?

  - by vvanscherpenseel

  For one part of our hosting platform we are currently using VMware Server 2 to create two virtual machines on one physical machine. One VM is used for hosting of small websites, the other VM is used as a staging environment. Both the host OS and guest OSes run CentOS Linux. Support for VMWare Server 2 has been discontinued and we are currently looking for a replacement. We only use basic functionality (we don't use snapshots, moving around VMs to different physical machines, or other 'advanced' functionality'). Just a box, with two VMs. We are looking for a virtualization solution that has long-term support, is stable and allows configuration/management from Mac OSx (I understood that Xen only has a Windows client). What would be the right solution for us?

  Read the article

• using one disk as cache for others

  - by HugoRune

  Hi Given a PC with several hard drives: Is it possible to use one fast disk as a giant file cache? I.e. automatically copying frequently accessed data to that one disk, and transparently redirecting reads and writes to that disk, so that other drives would only have be accessed occassionally. (writes would have to be forwarded to the other disks after a while of course) Advantages: the other drives could be powered down most of the time; reducing power, heat, noise speed of the other drives would not matter much. cache disk could be solid state. How can I set such a system up? What OS supports these options? Is this possible at all using Windows or Linux?

  Read the article

• Is there any diff tool for XML files?

  - by qedi

  Are there any good (Linux) tools for diffing two XML files? Ideally, I would like to be able configure it to some things strict, or loosen some things, like whitespace, or attribute order. I'll often care that the files are functionally the same, but diff by itself, would be annoying to use, especially if the XML file doesn't have a lot of linebreaks. For example, the following should really be okay to me: <tag att1="one" att2="two"> content </tag> <tag att2="two" att1="one"> content </tag>

  Read the article

• Modify PATH variable for X11 during log-in

  - by user1028435

  I am working on some lab computers (read: no administrative rights) that, if I log in, I need to change the PATH variable as X11 starts. The reason is that I need to change the PATH variable at this time, as opposed to later, is that the Print Screen command seems to "bind" during login (forgive my bad explanation of this). Currently, I have a .bashrc script as a workaround: #!/bin/bash export PATH=/home/username/bin:$PATH I can make it work by starting a new X, but I was wondering if it is possible to change upon login. cat /etc/redhat-release tells me my distribution is: Red Hat Enterprise Linux Client release 5.8 (Tikanga)

  Read the article

• How to tell if any MySQL connections has been dropped or timed out?

  - by Continuation

  A client is using PHP to connect to MySQL. The PHP scripts and the MySQL database are located on 2 different Linux servers. He complained that database connections were being dropped or timed out and asked me to take a look. Is there any place in MySQL that can show me what and how many connections have been dropped or timed out? I looked into slow query log and didn't see anything. Any suggestions on how to diagnose this dropped/timed out database connection problem? Thanks EDIT: Slow query log is enabled in my.cnf: log-slow-queries=/var/log/mysql-slow-queries.log And when I do a mysql> show global status; I got: | Slow_queries | 11402347 | So there are a lot of slow queries. But the file /var/log/mysql-slow-queries.log doesn't exist. Why is that?

  Read the article

• Deactivate GPU and use IGP

  - by squelos

  I am having some trouble with my Sony Vaio SVE1511W1e laptop. It has an ATI Radeon and the i5 has an IGP (i5 2450m). I don't often use my GPU, and the IGP would be just enough for most usage I do. Therefore, in order to improve the battery life, I wish to deactivate the GPU and use only the IGP. The problem is that my BIOS doesnt allow me to do so. But I believe it is possible to deactivate the GPU 'programatically'. I'm running Debian Wheezy on the 3.2.0.4 AMD64 kernel. The first problem I'm running into is that when I run lspci, my IGP doesnt show up. Could this be because im lacking a kernel module? (I chose a targeted installation). What are the solutions to deactivating a GPU and using an IGP on a Linux System such as debian?

  Read the article

• Operating Systems supported by the Intel SR1435VP2 Server Platform?

  - by Xspence

  I recently had two Intel SR1435VP2 Servers (with SE7320VP2 server boards) donated to me from a colleague. Google hasn't yielded much more than user manuals when searching for OS-compatibility answers. I have worked with flavors of Linux such as Ubuntu and Debian, but Intel only documents that they have tested proprietary operating systems such as SuSE, Solaris and Red Hat as documented on their driver downloads page. Has anyone worked with these machines before, and if so, do you know if the SR1435VP2/E7320 chipset supports OS's such as CentOS, Debian or Ubuntu? If you need more information or clarification, let me know. This is all new for me. Thanks in advance.

  Read the article

• Desktop file for my pythin script

  - by Jason94

  Hi! I would like to make a .desktop file for my Python script, but so far the only thing i have is a clickable icon on my desktop! It does nothing when i click it, so im guessing there is something wrong with the execution :) The desktop file: [Desktop Entry] Version=1.0 Type=Python Exec=/home/user/MyDocs/Python/EasySteer/Main.py Name=EasySteer Icon=steering_wheel X-Icon-Path=/usr/share/icons and I also tried: [Desktop Entry] Version=1.0 Type=Application Exec=/usr/bin/xterm "python /home/user/MyDocs/Python/EasySteer/Main.py" Name=EasySteer Icon=steering_wheel X-Icon-Path=/usr/share/icons But nothing works :D if it matters this is for my Nokia N900 mobile phone that runs Maemo linux, but i think the basics are the same.

  Read the article

• How to install ubuntu OS using an android mobile as a usb drive?

  - by Rochelle Canale

  I just want to ask if How can I install Ubuntu OS from android phone? I have the ubuntu.img and .md5 file. But I don't knwo how to run this. I also have Linux installer and VNC. Everytime I launch the application the terminal emulator always force close. So I think that there's an error with the application. Any idea how can I install this? I am using myphone A848 duo same as Noir A6 and micromax A68.

  Read the article

• Splitting an archive on multiple media

  - by Robert Munteanu

  I'm generating archives which are larger than my current physical media ( DVD ). I'd like to split those archives: automatically - instead of generating mini-archives by hand; consistently - so that an archive can be extracted independently of another. For instance for a tree of 24GB which would be archived into 10GB I would get 3 archives, all of them < 4.7 GB and each of them being able to be extracted without the other 2. I'm using dirvish so I'm archiving a filesystem tree. Update: I'm using Linux.

  Read the article

• Files copying between servers by creation time

  - by driftux

  My bash scripting knowledge is very weak that's why I'm asking help here. What is the most effective bash script according to performance to find and copy files from one LINUX server to another using specifications described below. I need to get a bash script which finds only new files created in server A in directories with name "Z" between interval from 0 to 10 minutes ago. Then transfer them to server B. I think it can be done by formatting a query and executing it for each founded new file "scp /X/Y.../Z/file root@hostname:/X/Y.../Z/" If script finds no such remote path on server B it will continue copying second file which directory exists. File should be copied with permissions, group, owner and creation time. X/Y... are various directories path. I want setup a cron job to execute this script every 10 minutes. So the performance is very important in this case. Thank you.

  Read the article

• How do I restore the Gnome Panel volume control in Ubuntu 10.04?

  - by Neil

  I use alsa, and I don't have a volume control applet on my Gnome Panel. When I right click and select "add to panel", there is nothing that has to do with "sound", "audio" or "volume" in the list, and the "Indicator Applet" or "Indicator Applet Session" things have no volume controls, or properties that would let you enable any sort of volume control. How can I get a volume control in Ubuntu, so I don't have to run aumix in a terminal or something? I've been using Linux since Redhat 5, it's beyond me why these sorts of problems are still around. Someone should just put a damn "Volume Control" element in the list of things to add to the panel, even if it doesn't work, perhaps showing an error message.

  Read the article

• How can I use rsync with a FAT file system?

  - by Kim

  I would like to write a simple backup script that saves some data to a FAT drive. Should I reformat the drive and use a better file system or is it possible to use rsync with FAT? If so, what problems might I run into? Would performance be a lot worse? EDIT: This is on linux, didn't even know there was a rsync for windows. The sources are various file systems (it's a mess), and the destination is currently formatted with FAT32. Thank you for your answers, I'll probably go for a reformat, since I'm not completely sure about the file sizes we'll have.

  Read the article

< Previous Page | 318 319 320 321 322 323 324 325 326 327 328 329  | Next Page >