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  • Linux environment variables

    - by George2
    I am using Red Hat Linux Enterprise 5. I am always using export command to set environment variable. I am wondering any other ways of setting environment variables and pros/cons of all alternative ways. Any answers or recommended readings? Thanks in advance!

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  • Get a script to run at startup (linux)

    - by Dan Graves
    I am trying to get a simple script to run automatically at startup. A friend told me to do this but it did not work. Could someone take a look to see what it is missing? *(Also I am brand new to linux, so this is pretty foreign to me) Here is what I was told to do: In terminal sudo nano /etc/init.d/obabp.sh Then enter this text: #!/bin/bash sudo python /home/pi/gits/RPi-OBABP/src/obabp.py save file and then $ sudo chmod +x /etc/init.d/obabp.sh $ sudo shutdown -r now

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  • Memory Usage on Linux box does not match up with `free`

    - by Chris Lieb
    I have a Linux machine that is not running too much in the way of software, but is somehow using 1.7GB of the 2GB of the installed memory. When I run free, I get: total used free shared buffers cached Mem: 2072616 1979972 92644 0 164876 129740 -/+ buffers/cache: 1685356 387260 Swap: 498004 1632 496372 However, when I run ps aux, the memory usage of all processes only comes out to 295.9MB, which is a far cry from the 1.7GB of memory that free reports as used. Why is there such a discrepancy?

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  • Chrome becomes totally unresponsive - Linux Mint

    - by SpyrosR
    Iam running Linux Mint on my laptop and i have some (serious) problems with Google Chrome.Randomly Chrome becomes totally unresponsive and iam not able to do anything,except restart the system from the power button.I think it's not an issue with system load and/or RAM,because if i for example open lot of "heavy" programs everything seems to work quite fine.When i only run Chrome with not many tabs at random times it freezes the whole system.The weird thing is that Chrome is not heavily loaded with tabs or extensions.I can't figure out what is causing this problem.Any suggestion?Thank you in advance.

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  • trying to setup multiple primary partitions on ubuntu linux

    - by JohnMerlino
    I currently have ubuntu desktop installed on a harddrive. I want to partition the harddrive so that I can reserve 30 gigs for ubuntu server and 30 gigs for ubuntu desktop. The drive has 300 gigs available. Right now I am booting from dvd drive and installing ubuntu server. I selected "Guided partitioning" and created a 30 gig primary partition of Ext4 journaling filesystem, set "yes, format it" for format partition and set bootable flag to on. I intend to use this 30 gig partition to hold ubuntu server and allow me to boot from it. Now I have two other partitions. They are both set to "logical", one is currently using 285.8 gigs and is using ext4 (when I try to set bootable flag to true, it gives a warning "You are trying to set the bootable flag on a logical partition. The bootable flag is only useful on the primary partitions"). More alarming it says "No existing file system was detected in this partition". Actually, Im thinking that this is the parittion that is supposed to be holding my current Ubuntu Desktop. And of course I want this to be bootable and be a primary partition, so I could dual boot from this and the server partition. Now the third partition is also set to logical and it is being used as swap area. My question is regarding that second partition. Its supposed to be a primary partition thats holding my existing ubuntu desktop edition. How do I switch it to primary and to make sure that its pointing to my existing desktop installation?

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  • GUI tool to extract iso file contents on Linux (KDE)

    - by extropy
    I have an ISO CD image file and want to extract it's contents to a folder. I know there are ways to mount the image and stuff, but it's complicated. I'm looking for a GUI tool to open up the contets and extract needed files. On windows I would use WinRar to do this. K3B only allows me to burn the stuff, Arch does not work with ISO files :( Is there a similar tool on Linux, preferably from KDE world?

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  • VMware Server 2.0 in Linux loads a blank screen at the login page

    - by Neil
    I'm using VMware Server 2.0.1-156745.i386 for Linux on Ubuntu 8.10. When I run "vmware", it brings up what is supposed to be the login page in a browser, but it just loads a blank page. This is the address: https://127.0.0.1:8333/ui/ Sometimes the login page comes back if you reload it a bunch of times, but this time it won't. Doing this also doesn't help: /etc/init.d/vmware restart Does anyone know why this happens, and how to fix it?

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  • Internal Linux machine with Apache that I can access by IP address but not computer name

    - by Parris
    I have an Ubuntu machine running LAMP. While on the machine I can type localhost or the computers name to access htdocs. From another machine I can only access the machine via its IP Address. This just started happening recently when someone rearranged the network cables and removed a hub sitting between the machine and the network, which makes me think it wasn't all the stable to begin with anyways. Any suggestions on where I should start looking?

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  • Linux Startup Script + add one command

    - by Adam
    I need one command line to run at startup. I've tested the command (it re-assosiates an Amazon IP to a Linux Server) and the command run successfully. Just need to know the best method to execute this on server reboot? The server is RedHat and I've read a bit about /etc/init.d but still unsure. command is: ec2-associate-address -v -i i-xxx xxx.xxx.xxx.xxx --region ap-southeast-1 -O key -W secret

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  • No output in Linux Keyboard Logger running in VirtualBox

    - by PabloG
    I'm trying to run LKL (Linux Keyboard Logger) in a Ubuntu 9.04 VirtualBox VM (VirtualBox 2.2.2 running on a XP host). The package installs fine, but when I try to run it lkl -l -k /usr/share/lkl/keymaps/us_km -o ./kbd.log & it hogs the CPU usage to 50% and never logs a keystroke (in fact the kbd.log file is never created) Any clues? TIA

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  • "watching" a log on FreeBSD vs Linux

    - by Cory J
    On Linux systems I can watch -n1 tail /var/log/whatever.log or watch -n1 grep somestuff /var/log/whatever.log To show updates to a log every 1 seconds. On FreeBSD however, the watch command does something else entirely. Who knows a good FreeBSD command for what I'm trying to do? =)

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  • About memory cache of Linux

    - by cheneydeng
    I'm running a python script to do some statistics and the actually memory which used is low,about 10%.And no other process cost more memory.However,when i use free -m and it shows that almost 95% memory has been used.The point is that my script should do a lot of read from files,so i wonder if there's any mechanism of Linux memory cache that caused the problem?echo 1 >> /proc/sys/vm/drop_caches works,but it seems manually.How can i reduce the memory cost and doesn't make a bad effect on reading files?

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  • History in linux terminal

    - by xain
    Hi, I'm running Ubuntu 9.1 and every time I open a terminal window, I lose the previous command's history. How can I configure it so it's kept even after rebooting? Thanks.

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  • Auto-mounting a windows share on Linux AD login

    - by Jamie
    I've managed to configure my test Ubuntu 10.04 Beta 2 Server VM to accept logins (via ssh) from users who have domain accounts in active directory via Kerberos, nsswitch.conf and PAM configurations. The final thing I'd like to happen is locating their home directory on a Windows server share. Each domain account ($USER) has a windows share ala: \\winsrvr\users\$USER. Can someone push me in the direction I need to go?

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  • How to use Ubuntu Touch manage-address-books.py?

    - by Rotary Heart
    Well I have been reading the docs for a few days and I found that I can "import" my contacts from a .csv file with the following: Alternatively you can import contacts from a csv file. The csv file should be in same format as /usr/share/demo-assets/contacts-data/data.csv. Replace the sample data.csv file with your own version and run manage-address-books.py create to import your contacts. But I can't figure out how to use manage-address-books.py create could anyone help me? I know that I can use syncevolution, but I want to sync my .csv file too.

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  • easy to setup FTP server on Linux?

    - by George2
    I am using Red Hat Linux Enterprise 5. I am new to this development environment, and previously worked on Windows. Could anyone recommend an easy to setup/maintain and free FTP server for my platform? I just need basic features and used by a couple of people only. Thanks in advance.

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  • Ubuntu One Music - 'Unable to Parse '2006-12-12T08:00:00Z' as integer (iTunes Non-DRM AAC)

    - by Scott
    Good Morning; Title says most of it, uploaded a new song to my U1 Music (via my Android using the Files app). Which is an recently purchased iTunes .m4a song, so is non-DRM AAC. Uploaded fine, and browsing in U1 Music I see artist "Spray" fine, and then the Album, but attempting to open the Album to the song, returns: "'Unable to Parse '2006-12-12T08:00:00Z' as integer" Not sure if it's a problem with the file itself, or just how Android uploaded the file, as that is clearly a weird date code. All my other music is fine, no errors, and the service works awesome. My U1 account is under the e-mail address used for this question. Thanks!

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  • Concerning persistence size in the Linux Live Creator

    - by user63085
    Message : Hello everyone! I have ,for the last several months, used the Linux Live USB Creator which it is a very useful app to make portable OS on to flash drives. I mostly use this application to test and try out new OS's as they are released, before I decide to make a hard disk installatio on to the computer. In many cases, the application developers will allow the “persistence” feature in the flash-drive-installed OS, which is just another way of saying that after multiple boot-ups and shutdowns, all the changes made to the OS will be saved in the flash-drive. But I have a question about the limit of the Persistence size in Linux Live USB Creator (currently version 2.6). I install Super OS 10 on to a partition on my external drive which has 30 GB. I wanted to reserve 10 GB for the persistence so that I can install more applications and space will not run out as I update the installed applications or when I do system updates. But why is it that only 3950 MB can be put for persistence? It would be great if, when desired, as much more persistence space could be set aside so that the space will not run out soon. Also, as I have installed the OS on a 30 GB drive, I tried to see how much space is left. But it seems only the remaining of the Persistence space is displayed when I click on the File System folder. For example, after I have just installed it now, there is 3.5 GB of free space. Where can I access the remaining 26 GB or so drive space which is in the same drive? How do I access it Sir?? It would be helpful if any one could explain and help me with this. Most importantly, it would be a big relief if the persistence can be somehow expanded by a work-around so that I can continue using my SuperOS 10.04 (now heavily customized) OS, which unfortunately has just over 576 MB of space left now, after I removed OpenOffice.org and installed the Libre Office earlier today. This is what remains from the maximum allowable 3950 MB of space for persistence at set-up. Thanks in advance!

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  • Why is Linux choosing the wrong source ip address

    - by Scheintod
    and what to do to let it choose the right one? This all happens inside an OpenVZ container: The Host is Debian/Wheezy with Redhat/OpenVZ Kernel: root@mycl2:~# uname -a Linux mycl2 2.6.32-openvz-042stab081.5-amd64 #1 SMP Mon Sep 30 16:40:27 MSK 2013 x86_64 GNU/Linux The container has two (virtual) network interfaces. One in public and one in private address-space: root@mycl2:~# ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:127.0.0.2 P-t-P:127.0.0.2 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 RX packets:475 errors:0 dropped:0 overruns:0 frame:0 TX packets:775 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:32059 (31.3 KiB) TX bytes:56309 (54.9 KiB) venet0:0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:80.123.123.29 P-t-P:80.123.123.29 Bcast:80.123.123.29 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 venet0:1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.0.1.29 P-t-P:10.0.1.29 Bcast:10.0.1.29 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 The route to the private network is set manually: root@mycl2:~# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 venet0 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 venet0 Tring to ping others on the private network leads to the wrong source address been choosen: root@mycl2:~# ip route get 10.0.1.26 10.0.1.26 dev venet0 src 80.123.123.29 cache mtu 1500 advmss 1460 hoplimit 64 Why is this and what can I do about it? EDIT: If I create the route with (thanks to Joshua) ip route add 10.0.0.0/8 dev venet0 src 10.0.1.29 it is working. But according to man ip-route the src parameter should only set the source-ip if this route is chosen. But if this route is chosen then the source-ip would be that anyway.

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