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• Change directory upwards to specified goal

  - by haakon

  I'm often deep inside a directory tree, moving upwards and downwards to perform various tasks. Is there anything more efficient than going 'cd ../../../..'? I was thinking something along the lines of this: If I'm in /foo/bar/baz/qux/quux/corge/grault and want to go to /foo/bar/baz, I want to do something like 'cdto baz'. I can write some bash script for this, but I'd first like to know if it already exists in some form.

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• Accessing large log files on a unix machine with textpad

  - by Jason

  Hi, I'm interested to access large log files on a unix server with textpad. (textpad for history reasons, i personally prefer ofcourse less awk grep etc) but I have many personal who rather be using textpad they have years of experience with it and can tweak it to do whatever they want. The problem is that if i connect for example with winscp to get the log files to textpad it first fetches the full log and user needs to wait and it bloats etc. I would rather the textpad to somehow access the unix machine and get only the relevant segment of the log file (large log files could be GB) anyone knows how can this be achieved?

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• ubuntu 64 or 32 bit for macbook/vps?

  - by ajsie

  i've got macbook pro and wonder if i should use 64 or 32 bits ubuntu server? and then i've got a vps not hosted by med. how do i know what version to choose? how do you check how many bits your cpu i working with? can i use 64 on 32 and vice versa?

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• Applications getting killed automatically

  - by nebi

  I am running httperf client on my m/c and after few seconds it is getting killed. dmesg shows: The command is: httperf --hog --client=0/1 --server=39.0.0.2 --port=80 --uri=/50kb --rate=20000 --send-buffer=4096 --recv-buffer=16384 --num-conns=6000000 --num-calls=1 Although I had done this test no. of times but never faced this error any time. From last two days I am observing this. My Ubuntu version is ubuntu 10.04. and httperf version is httperf-0.9.0 [ 2997.180620] Out of memory: kill process 7977 (apache2) score 70532 or a child [ 2997.180632] Killed process 7977 (apache2) [ 2997.184837] Out of memory: kill process 7971 (rsyslogd) score 8702 or a child [ 2997.184844] Killed process 7971 (rsyslogd) [ 2997.188823] Out of memory: kill process 7978 (apache2) score 1354 or a child [ 2997.188829] Killed process 7978 (apache2) [ 2997.192817] Out of memory: kill process 7973 (atd) score 561 or a child [ 2997.192822] Killed process 7973 (atd) [ 2997.196805] Out of memory: kill process 8102 (httperf) score 471 or a child [ 2997.196811] Killed process 8102 (httperf) Output of free command: total used free shared buffers cached Mem: 3862768 163000 3699768 0 2384 13068 -/+ buffers/cache: 147548 3715220 Swap: 3905528 0 3905528

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• SSH login without password prompt

  - by user477519

  I am trying to set up Opennebula. I want to set up my local host so that I can log into my remote host without having to use the password. I have followed the instructions in the "Secure Shell Access" section in the installation instructions. I can not log into my remote host from my local host, but I can log into my local host from my remote host. Not sure what's going on. Any help would be appreciated. Thanks

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• Subversion Permission Denied when adding or committing

  - by Rungano

  Hi guys I am running subversion 1.4 on Centos 5.2 and my clients are using tortoise to do their check out, commit etc. I think I have permissions problems but I have configured the folder to accessible to everyone with 777 attribute but I seem not to be getting anywhere. Its generating this error on tortoise "svn: Can't open file 'PATH/TO/MY/FILES/entries': Permission denied". Some guy was suggesting some indexing software installed on the client machine like google desktop, any suggestions?

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• puppet execution of a python script where os.system(...) command is not working

  - by philippe

  I am trying to manage Unix users with puppet. Puppet provides enough tools to create accounts and provide authorized_keys files for instance, but no to set up user password, and it tell to the user. What I have done is a python script which generate a random password and send it to the user by email. The problem is, it is not possible to launch passwd Unix command with python, I have then written a bash script with the command: echo -ne "$password\n$password\n" | passwd $user passwd -e $user Launched manually, the script works fine and the created user has its password sent by email. But when puppet launches it, only the python script gets executed, as if the os.system('/bin/bash my_bash_script') is ignored. No error is displayed. And the user gets its password, but the passwd commands are not launched. Is there any limitation with puppet preventing to perform what I described? Or, how can I otherwise change the user account, its expiration, and send password by email? I can provide more information, but right now, I don't know which are accurate. Many thanks!

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• Change ip route metric

  - by notphunny

  I'm constantly switching between eth0 and wlan0 interface on my archlinux because I often change OpenWrt fw images on my second router (which isn't connected anywhere). So I have problem with my routes when I'm connected to my wlan and want to connect with Ethernet to my router. Both routers are on 192.168.1.1/24 and after connecting to my Ethernet profile eth0 route becomes default one (which is ok for the time), because of smaller metric I guess. So I'm interested, how can I change routes metric so my applications can be connected to the internet (through out wlan)? Maybe there is solution not to use Default Gateway on Ethernet profile, however I still want to know how to change metric. Or default route if there are more then one.

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• List installed packages with the repo they came from?

  - by Sandra

  With rpm it is possible to list installed packages with additional info rpm -qa --queryformat "%-35{NAME} %-35{DISTRIBUTION} %{VERSION}-%{RELEASE}\n" | sort -k 1,2 -t " " -i which will produce something like xorg-x11-drv-ur98 (none) 1.1.0-1.1 xorg-x11-drv-vesa CentOS-5 1.3.0-8.3.el5 xorg-x11-drv-vga (none) 4.1.0-2.1 xorg-x11-drv-via (none) 0.2.1-9 On Ubnutu server would I like to list all installed packages and show from which repository in came from. Can that be done?

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• migration of physical server to a virtual solution, what i have to do?

  - by bibarse

  Hello I'm new in this forum, so i would like that you forgive me for my blissfully and my low English level. I'm a trainee in company one month ago, and my mission is to migrate 3 physicals servers to a virtualization technology. The company edit softwares for E-learning so there are lots of data like videos, flash and compressed (zip). This is some inventory of the servers: OS: Debian, 2 redhat, apache, php/mysql, sendMail/Dovecot, webmin with virtualmin template to create dynamically the web sites because there is no sysadmin ... The future provider will be responsible of to secure, update and create the virtual machines (outsourcing) and with a RedHat OS's. So i want that you help me to choose a virtualisation technologie (for the i prefer KVM of Redhat RHEV, VMWare is expensive), how evaluate the hardware needs (this for evolution of 4 or 5 years) and to elaborate a good planing to don't forget any think. Thank you for your responses.

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• sudoers entries

  - by Pochi

  Is there a way to have a sudoers entry that allows executing of only a particular command, without any extra arguments? I can't seem to find a resource that describes how command matching works with sudoers. Say I want to grant sudo for /path/to/executable arg. Does an entry like the following: user ALL=(ALL) /path/to/executable arg strictly allow sudo access to a command exactly matching that? That is, it doesn't grant user sudo privileges for /path/to/executable arg arg2?

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• How to get a remote desktop / X11 with ubuntu 10.04 LTS from mac os x?

  - by cwd

  I am running Snow Leopard OS X 10.6 and I have X11 installed. I also have ubuntu 10.04 LTS running on a remote machine. I have root privileges. So far I haven't really installed anything besides the operating system. This was done in an amazon aws type of way. I see people talking about getting gnome or a "remote desktop" type of thing working, but I'm not sure how to go about this. I connected and then typed in gnome-session but nothing happened. Maybe I don't have that thing installed yet? Can someone point me in the right direction? Also, is it possible to just start an X11 session with a single app, like notepad or a file and folder browser?

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• Use test to check for condition with find and execdir option

  - by slosd

  I think I can keep my question short. Why does the following command produce no output? find /usr/share/themes -mindepth 1 -maxdepth 1 -type d -execdir test -d {}/gnome-shell \; I expected it to print all folders in /usr/share/themes that contain a folder gnome-shell. Several websites suggest that this usage of test as a command in exec/execdir is possible. From man find: -exec command ; Execute command; true if 0 status is returned. [...]

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• ssh login - execute command - exit

  - by renton

  hi folks, is there a way to just execute a command (or script) on a user (ssh) login and then exit? some kind of replacing the default shell with a custom script. i want a user only be able to restart a service, but not to have regular shell-access thanks

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• Video Player/Library for Ubuntu with ratings and thumbs

  - by greggannicott

  Hi. I've just made the switch to Ubuntu on my main PC and I've been looking for a media player that can: Play all the usual video formats Rate (and ideally, tag) each file Display thumbnails for each file Other than that there isn't much I'm after. Banshee comes close, but doesn't display thumbnails. I've Google'd lots but I'm running out of search terms to try. Does anyone have any suggestions? Cheers!

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• How can I use '{}' to redirect the output of a command run through find's -exec option?

  - by pkaeding

  I am trying to automate an svnadmin dump command for a backup script, and I want to do something like this: find /var/svn/* \( ! -name dir -prune \) -type d -exec svnadmin dump {} > {}.svn \; This seems to work, in that it looks through each svn repository in /var/svn, and runs svnadmin dump on it. However, the second {} in the exec command doesn't get substituted for the name of the directory being processed. It basically just results a single file named {}.svn. I suspect that this is because the shell interprets > to end the find command, and it tries redirecting stdout from that command to the file named {}.svn. Any ideas?

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• What's the most compact way to store a password-protected RSA key?

  - by Tim

  I've tried converting a PEM-encoded key to DER format, and it appears the password is stripped regardless of the -passout argument. Example: openssl rsa -in tmp.pem -outform DER -out tmp.der -passin pass:foo -passout pass:bar -des3 The resulting key appears no longer password-protected, so I am assuming that DER format does not support a password - is that correct? What alternative way is there to store this in a compact, binary form, and keep the password-protection?

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• I do not understand -printf script

  - by jerzdevs

  I have taken over the responsibility of RHLE5 scripting and I've not had any training in this platform or BASH scripting. There's a script that has multiple pieces to it and I will ask only about the second piece but also show you the first, I think it will help with my question below. The first part of the script shows the output of users on a particular server: cut -d : -f 1 /etc/passwd The output will look something like: root bin joe rob other... The second script requires me to fill in each of the accounts listed from the above script and run. From what I can gather, and from my search on the man pages and other web searches, it goes out and finds the group owner of a file or directory and obviously sorts and picks out just unique records but not really sure - so that's my question, what does the below script really do? (The funny thing is, is that if I plug in each name from the output above, I'll sometimes receive a "cannot find username blah, blah, blah" message.) find username -printf %G | sort | uniq

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• Free web gallery installation that can use existing directory hierarchy in filesystem?

  - by user1338062

  There are several different free software gallery projects (Gallery, Coppermine, etc), but as far as I know each of those creates a copy of imported images in their internal storage, be it directory structure or database). Is there any gallery software that would allow keeping existing directory hierarchy of media files (images, videos), as-is, and just store the meta-data of them in a database? I guess at least various NAS solutions ship with software like this.

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• How to copy a file to a remote server using the command line?

  - by cool_cs

  I am trying to copy a file from my desktop to my remote server using the sudo command. I am doing this from the remote machine since I know the password for this machine and I do not have a password for my local machine. sudo scp donj@localhost:/Desktop/my.cnf user@remotemachine:/app/MySQL/my.cnf This does not work however. I want to overwrite the my.cnf file in the MySQL directory. I tried the su command but I do not have the password to become a super user.

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• ssh -x : howto get clipboard?

  - by Gupu User

  Hello! I'm connected to a server via ssh -x and my only way to get text out of the system is the x clipboard (unless i want to take thousends of screenshots and OCR over it). I can not execute any programs on the other machine, because i don't have access. How can I achive this?

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• Fedora 16 Running Hot

  - by sdasdadas

  Since switching from Windows 7 to Fedora 16, my laptop has been running incredibly hot (by the air exhaust). The laptop is an Asus K73S. Running 'sensors', I receive: acpitz-virtual-0: 75.0 celsius nouveau-pci-0100: 66.0 celsius asus-isa-0000: 75.0 celsius The only CPU hog is Firefox at 30 - 40% on average. My GPU information (from lspci) is: Intel Corporation Xeon E3-1200/2nd Generation Core Process or Family Integrated Graphics Controller (rev 09). Running lspci | grep -i VGA, returns: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: nVidia Corporation GF106 [GeForce GT 555M SDDR3] (rev a1) I don't notice a huge difference running without the battery, but it does seem a little cooler. Thanks!

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• why is this happening?-"dhcpcd will not work correctly unless run as root"

  - by user330317

  i have installed archlinux and gnome on virtualbox. had no problem connecting to internet but now after installing gnome and rebooting there is no internet connection after following instructions from archwiki,i have tried . but i cant figure out the problem please help. host-63drhd% sudo netctl status enp0s3 ? [email protected] - Networking for netctl profile enp0s3 Loaded: loaded (/usr/lib/systemd/system/[email protected]; static) Active: inactive (dead) Docs: man:netctl.profile(5) host-63drhd% sudo netctl enable enp0s3 Profile 'enp0s3' does not exist or is not readable host-63drhd% sudo dhcpcd dhcpcd[1486]: sending commands to master dhcpcd process host-63drhd% dhcpcd dhcpcd[1543]: control_open: Permission denied dhcpcd[1543]: dhcpcd will not work correctly unless run as root dhcpcd[1543]: open `/run/dhcpcd.pid': Permission denied dhcpcd[1543]: control_start: Permission denied dhcpcd[1543]: version 6.3.2 starting dhcpcd[1543]: enp0s3: if_init: Permission denied dhcpcd[1543]: enp0s8: if_init: Permission denied dhcpcd[1543]: no valid interfaces found dhcpcd[1543]: no interfaces have a carrier dhcpcd[1543]: forked to background, child pid 1544

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• dhclient.conf: Send 2x host-names to the DHCP server?

  - by RobM

  Already working: Debian box DHCP with send host-name me.company.com in dhclient.conf DNS updates automatically with an entry for me.company.com What I want to add: Send a second host-name, so both are automatically registered with DNS In other words: I want a DHCP client to register with DNS twice using different names, preferably without having to maintain DNS records manually. Is this even possible with DHCP?

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• Backing up to smaller drive

  - by Dave

  In a few hours I'll have a new 500GB Sony laptop, filled with the usual Sony rubbish which I'll promptly be replacing with Ubuntu or Crunchbang or something. However, first I want to make a full clone of the drive (including recovery partitions), should I wish to return it to Sony or sell it on in its factory state. The problem is that the only backup drives I have are less than 500GB - the biggest I have is 250GB or so! So I need to backup and compress on-the-fly. What's the best way to do this? Presumably dd piped into gzip would do the trick, or does anyone have any other suggestions to accomplish this?

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