A. I want to manually set the Window Clamp for my experiment.I came to know we can do that in net/ipv4/tcp_output.c::tcp_grow_window. I'm really confused with the flow. Even i tried in net/ipv4/tcp_output.c::tcp_select_window, but things are asusual.
B. Can I really improve the throughput by increasing the buffer space ? Do i have to go for netfileters or altering the existing data structure will do ?
The Network Manager on KDE gets DNS configuration from DHCP and sets it automatically, but I would like to use the Google Public DNS. If I overwrite /etc/resolv.conf with nameserver 8.8.8.8 it still resolves names with the old DNS (probably cached in memory) and, of course, even if it worked, it would be annoying having to do that every time I connect to a network.
I've noticed the Network Manager lets you specify a fixed DNS with the rest being taken from DHCP, but that's on a per network basis, and I would like to set it once for whichever network I connect to (if you're on the go with a laptop that becomes an issue).
For some reason, my kernel got uninstalled. I have only file called "initrd.img-2.6.26-1-xen-amd64.bak" in my /boot folder. The only other thing is a 'grub' folder. I booted into a rescue OS, but is there a way to install a kernel manually so that I can boot into my original OS again? Can I just download a vmlinuz file into that folder and then fix my menu.lst?
View 1 Replies View Relatedyum install libstdc++-docs doesn't work for me:No package libstdc++-docs available.So, I can only install it myself.I've found the C++ man pages here, how can I install it?I guess just put it under /usr/share/man/man3 will do the job, but I'm not sure.
View 1 Replies View RelatedMy AWSTATS is not updating correctly. Upon closer look I noticed that the access_log file is already >300MB. logrotate was not running. Now I have enabled log rotate. However, it's not touching this existing access_log file. Is there a way for me to manually split and rotate this file into 3 100MB files, access_log.1 access_log.2 and access_log.3? I tried running logrotate (logrotate /home/user/httpd/access_log) from console and it's throwing Segmentation fault.
View 9 Replies View Relatedcreation of initrd manually(not using mkinitrd).
View 1 Replies View Relatedloading /usr/bin/teclafsck failed. please repair manually and reboot. the root file system is currently mounted read-only. to remount it read-write do:bash# mount -n -0 remount,rw /attention: only control-d will reboot the system in this maintence mode shutdown or reboot will not work.
View 3 Replies View RelatedI'm not sure of the exact sequence of events, but I install git-daemon on Ibex. I believe this installs runit (??). When I boot, I get the Ubuntu splash screen come up, but about half way through it drops to the console with the message:
Loading the saved-state of the serial devices...
-runit: leave stage: /etc/runit/1
-runit: enter stage: /etc/runit/2
The computer just sits there without starting gdm. Virtual consoles still work, and I am able to startx from a different console. However, I don't have networking (ping doesn't connect to anything, for example), and Gnome complains about failing to initialise HAL.
I have now uninstalled runit, and can now get back to a useable system. I have the same problem and for the same reason, but I can't uninstall runit because I can't log in with, for example, tty1 in tex-mode, because it says that my password is incorrect (and, believe me, I didn't forget my pass, and it hasn't non-ASCII characters, so I don't know what is the problem). The only thing I can do is boot a live CD and do something from it, but the only solution I know is reinstall...
I'm using Linux Mint Debian Edition. I see that the latest version of firefox is out and I would like to try it. Problem is, it probably wont show up in my package manager for a long, long time. So I thought I would try to manually install it. I downloaded it and untar'ed the zip fie correctly. Then I copied over my old firefox directory with this one. Didn't work. The old firefox was still getting loaded up. I've done some research and it looks like i have to create a link. I don't know how to do this.
View 1 Replies View RelatedI would like to ask you how to mount audio cds in linux manually. Normally, when I insert disk into cd-rom, Gnome manages to open me a window with content of cd. Everything works ok, until I try to mount same cd through shell.
First error complaining about cd being read-only can be solved using -r arugment. But, second error wants me to specify filesystem, which I don't know of course. I heard that audio cds don't have any filesystem or something similar, but how is it possible to display it's content in Gnome?
I actually mean, I would like to be able to do same thing, but without desktop environment - only through shell.
how to reset my password manually?
View 3 Replies View RelatedI want to start out by saying that I've search for this problem but none of those solutions where of any relevance to me/didn't work.I have this bash script I want to run in crontab that will check my /dev/md0 for failed devices (I dont want sendmail or postfix for this). The script won't run if not run manually. Does anyone see a problem with the script or crontab? Is it even possible?
Here's /etc/crontab:
0 12 * * * /bin/sh /checkRAID.sh
I have also tried
[code]....
How do I manually install software that I download off the net? i.e. like when I download a tar.gz or .deb file that is not found in the repository- and want to install it. I tried the old Winders(Windows) way- unzipping and double-clicking (Only in private, of course)....but I guess as most of you know...that does not work in LINUX.
I read in the manual where it says something about adding things to the repos- but they apparently have to be .pps or .ppa files or some junk..So how does one install downloaded software manually in Ubuntu?
I want to close an open port which is in listening mode between my client and server application. Is there any manual command line option in Linux to close a port ??NOTE: I came to know that "only the application which owns the connected socket should close it, which will happen when the application terminates."I dont understand why it is only possible by the application which opens it ... But still eager to know if there is any another way to do it ??
View 4 Replies View RelatedI 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?
RHEL 5.4. I'm facing the following error after rebooting the server:
/dev/VolGroup01/u04: UNEXPECTED INCONSISTENCY Run fsck Manually"
*** An error occurred during the file system check.
*** Dropping you to a shell: the system wil reboot
*** when you leave the shell.
give the root password for maintenance:
-Previously I performed a lvreduce command on a LV, after the lvreduce, I reboot the server.
-After login as root I run:
e2fsck -f /dev/VolGroup01/u04
But, it shows:
The filesystem size (according to the superblock) is 5218304 blocks
The physical size of the device is 1310720 blocks ...
either the superblock or the partition table is likely to be corrupt
abort<y>? no
pass 1: cheking inodes, blocks, and sizes
error reading block 1310722 (invalid argument) while doing inode scan
inore error <y>? y
-Additionally, trying to lvdisplay, it shows:
Locking type -1 initialization failed
I have no important data on that LV, but I can not boot the server properly.
I want the filesystem of my external drive to be checked periodically after a numer of mounts. I put 2 in the sixth colums of fstab for this partition
Code:
/dev/sdb1/mnt/hdext3rw,dev,sync,user,noauto,exec,suid02
and I use the tune2fs to set the maximum mount count to 32.
Code:
tune2fs -c 32 /dev/sdb
now the mount count is 34 and the date of the last check is not recent, so apparently the auto fsck has not been performed. Probably because this partition is not mounted at start-up but I usually mount it manually.
I run Linux Slackware 13.1. I have a hard drive with a ext2 filesystem, and I would like to mark the filesystem as Clean without running FSCK on it. I think I can do that with the debugfs command, but in the help there seem to be only a command to mark the filesystem as Dirty?? Is there a way to manually mark a ext2/ext3/ext4 filesystem as Clean?
View 2 Replies View RelatedWe have about 15 printer installed on Windows and shared in Linux RedHat 3.0 the username that we are using for the share its password has to be changed, is their a way to do it on one location or do i have to individually change password on all the printers Manually?
View 1 Replies View RelatedI have a dell wireless wlan 1397 mini card with an ethernet 802.3. Now I am trying to connect by a wired connection. Supposedly a have a bcm5784m nic. I have tried to configue the bcm5784m which was shown it to be regonized through fedora 11, i could activate it, and connection still failed. In my driver list on my dell inspiron and studio 1737 the bcm5784m was not checked as a download i needed. What in the hell am I doing wrong. I have searched exhaustively and have found nothing concerning the wire ethernet card or bcm. Supposidly ubuntu does support the dell studio 1737 laptopForgive my spelling. Oh and by the way I am using kubuntu 9.04 jaunty.
View 5 Replies View RelatedI have jdk.rpm.bin package. When I run the command ./jdk.rpm.bin it extracts and automatically installs the package. I want to extract rpm package only and to install rpm myself not automatically.
View 2 Replies View RelatedI have installed vlc 1.0.5 manually, because of some reasons I have to uninstall it. I tried deleting the folders naming vlc and binary file but some how it not getting removed completely.how to uninstall it. I am using ubuntu 9.10.
View 6 Replies View RelatedI have downloaded the jdk-6u24-linux-i586.bin and gone through following steps.
nuwan@nuwan-laptop:~/Downloads$ sudo chmod +x jdk-6u24-linux-i586.bin
nuwan@nuwan-laptop:~/Downloads$ ./jdk-6u24-linux-i586.bin
It works fine on me. These commands create a folder jdk1.6.0_24 in Downloads directory.
My Question is this. If I want to install packages manually.What is the best way to do it. Where should I put artifacts which generates after executing above commands. Another question, If I use sudo apt-get install sun-java6-jdk where does these downloaded packages are installed. I mean location. I have been using Ubuntu 9.10
I have a file server that just has some samba shares. What would be some good files to back up off of their for disaster recovery purposes. I already have the smb.conf file from /etc/samba. I'm not familiar with Samba so not sure what else would be useful for if I had to get this reconfigured on another server identically, in a pinch.
View 5 Replies View RelatedIs there a way to manually change a username without using usermod? What files would I need to edit? I am using Micro Core 3.7.
View 4 Replies View RelatedI have installed tomcat6 on Ubuntu. It starts it automatically at the startup. I do not want it to start automatically, I want to start it manually because I use same 8080 port for different servers. If tomcat is already started on 8080, it becomes problem.
How do I stop Ubuntu from not starting tomcat automatically at startup.
I have a directory in the /var/www folder. I have access to this directory from my windows machine through samba.
Everytime i add new files to the folder where the webpage is locate i need to go to my centos server a type chmod -R 777 /var/www/name
It can't be right that i need to do this everytime i add new files to the folder??
If i dont run this command i can't access this files when I access the webpage throug a browser...
UPDATE: I think It has something to do with the samba user, because if i create the files as root directly on the centos server i dont got the problem ... ?
I have about 1000 text files and I need to view each, and move it to a folder if it's the correct one. I can only do basic sorting by length/size, and I can't grep because the text is random. How can I do this besides manually openiing + saving each in gedit.I'm on Ubuntu Linux.I've already done all the sorting I can based on ize,wordcount,greps,date,etc. This is what's left over. I'm trying to find an easy way to view +save/ignore the rest.
View 6 Replies View RelatedI've trying to get dnsmasq working as a combined dns and dhcp server. It's infuriating so far... In short, the DNS works fine for anything added to /etc/hosts, and the dhcp works fine, but the dhcp is not updating the dns with hostname information from clients.
The outcome of this is that i can only ping a node by hostname if i know it's address, which means setting a static dhcp allocation and putting the hostname into /etc/hosts manually, which is very annoying and kind of defeats the poit of dhcp. There must be a way to get dnsmasq to update the hosts file, surely The clients aren't using fqdn's if that matters, and i think i've tried every combinination of "expand-hosts" and "domain=" following is the dnsmasq config file contents:
domain-needed
bogus-priv
except-interface=tun0
[code]....
I have a VPS with Ubuntu. I host a small website (~10 visitors at the same time). Sometimes the website starts lagging. It lags so bad that my SSH connection starts lagging too. Running top says that 2 instances of apache2 take up 50 %CPU each.
I assume this is a DoS attack. I've copy-paste installed a few iptables scripts that made sense, but this has not helped. I installed libapache2-mod-evasive -- I'm sure it blocks the attacker, but I'm still lagging.
What can I do? Can I at least find the IP of the attacker? I have strong experience with Linux, but almost zero experience with being a server admin.