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this question has answer here: how install ubuntu on virtualbox? 3 answers how install virtual box , centos in virtual box in ubuntu 14.04 environement using terminal? also, suggest useful tutorials follow same! installation virtualbox add following line /etc/apt/sources.list: deb http://download.virtualbox.org/virtualbox/debian trusty contrib download , add apt-secure-key: wget https://www.virtualbox.org/download/oracle_vbox.asc sudo apt-key add oracle_vbox.asc to install virtualbox, do: sudo apt-get update sudo apt-get install virtualbox-5.1 sudo apt-get install dkms installing virtualbox extension pack (need rdp access) wget http://download.virtualbox.org/virtualbox/5.1.8/oracle_vm_virtualbox_extension_pack-5.1.8-111374.vbox-extpack vboxmanage extpack install --replace 'oracle_vm_virtualbox_extension_pack-5.1.8-111374.vbox-extpack

i tried install wine-stable (1.8.5) in yakkety using official ppa: sudo add-apt-repository ppa:ubuntu-wine/ppa no avail. ppa doesn't seem valid , old wine1.6. , doesn't show in main menu. is there way install (1.8.5)? yakkety repository has wine 1.8.5 ( check here ), no need add ppa. just install using command sudo apt-get install wine

i experiencing bit stuttering (laggy) animation during desktops switching, , overall gui feels not responsive. few curious points, made me ask question here: my pc quite powerful (skylake 6700k, samsung 950 pro ssd, 32 gb ram) , expect animations more smooth. yes, does lack gpu, however: it used much better, @ point happened , started experience issues. i'm pretty sure wasn't faulty software or misconfiguration of system. i have totally similar pc right here (we have similar workstations here, @ work) , animations noticable better. confirmed several people, it's not imagination. recently gave on fixing , reinstalled ubuntu, , fresh installation gave me similar issues. i have upgraded 16.10 hoping fix it, didn't. i have installed intel graphics update utility , have updated graphics drivers using it, didn't helped either. i have totally no idea happening or how diagnose issue. current hypothesis hardware messing (as issue persisted among full

i've been googling each parameter etc in script trying understand each line saying (if makes sense). wondered if kind enough me out helping me 'translate' plain english means? i've done first 5 lines i'm not sure if it's correct :/ appreciated. thank you! this script: #!/bin/bash current=0 while [ $seconds -le 10 ]; if [ $seconds -eq ${current} ]; echo ${current} current=$((${current}+1)) fi done the magic of built-in bash variable $seconds your script highlights built-in bash variable $seconds keeps track of how many seconds bash script has been running. starts @ 0 , working variable current set value @ beginning of script. script loops , increments current each time $seconds changes , displays "1, 2, 3... 10" on screen. analyzing bash script line line: #!/bin/bash tells system bash script current=0 sets variable current 0 while [ $seconds -le 10 ]; do when number of seconds script has been r

i want ban ips request pages e. g. example.com/weird.php , 1 send post request example.com/weirder.php . i have searched lot, , learned several iptables , seems instructions centos. worry being locked out. i'm looking detailed , safe answer. i use aws ec2, ubuntu , nginx. first try on machine have physical access to. ip tables first, let's figure out ip tables rules block ip address. detailed instructions, check out guide .let's drop incoming connections particular ip: iptables -a input -s a.b.c.d -j drop after this, restart iptables regular. try out command check if works fine you, familiar syntax , proceed further. bash script let's create bash script block ip. (warning: might need play user permissions , sudo work). create new file, say, blockip.sh. #! /usr/bin/env bash iptables -a input -s $1 -d drop <other stuff want when block ip> <note: ip address in variable $1> run chmod +x blockip.sh make script executable. can

usually able google way out of problems apt 1 has me stumped. it's complaining lacking disk space it's reporting can't create directory on sda1? any suggestions appreciated! here output tried. duncan@bedroom:~$ df -h filesystem size used avail use% mounted on udev 1.6g 4.0k 1.6g 1% /dev tmpfs 328m 1.4m 326m 1% /run /dev/sda1 14g 9.8g 3.1g 76% / none 4.0k 0 4.0k 0% /sys/fs/cgroup none 5.0m 0 5.0m 0% /run/lock none 1.6g 13m 1.6g 1% /run/shm none 100m 8.0k 100m 1% /run/user duncan@bedroom:~$ sudo apt-get clean duncan@bedroom:~$ sudo apt-get install reading package lists... done building dependency tree reading state information... done might want run ‘apt-get -f install’ correct these. following packages have unmet dependencies. linux-headers-generic : depends: linux-headers-3.13.0-100-generic not installed e: unmet dependencies. try using -f.

i trying install ubuntu-16 along side windows 10 on hp-probook. every time try install, following grub error present error . made bootable usb using rufus,opted gpt partition. i installed keeping wifi on, has been mentioned @ many other places,but still didn't work out. days ago, used following error error comes in boot loading earlier error . have set fast boot , secure boot off. i tried running boot repair in ubuntu once , messed windows 10 booting also.when install ubuntu 15, similar boot error, error message isn't same,though. your problem caused windows feature known fast startup. see here information on how shut off. may need disable hibernate, described here. these features cause filesystems open in windows left in inconsistent state in other oses, highly dangerous. in specific case, efi system partition (esp) shared between oses, , left in state in cannot written ubuntu, producing error. after disable fast startup , hibernate, should reboot once or

i'm running kubuntu on dell xps 9350. after upgrade 16.04.3 suspend not working anymore. any suggestions/help fixing appreciated. kind regards, billy //some info: uname -r: 4.4.0-38-generic here part of history log concerning update: start-date: 2016-10-17 15:20:35 upgrade: libnm-glib4:amd64 (1.2.2-0ubuntu0.16.04.1, 1.2.2-0ubuntu0.16.04.3), libavdevice-ffmpeg56:amd64 (7:2.8.6-1ubuntu2, 7:2.8.8-0ubuntu0.16.04.1), update-manager-core:amd64 (1:16.04.3, 1:16.04.4), linux-libc-dev:amd64 (4.4.0-42.62, 4.4.0-43.63), libavutil-ffmpeg54:amd64 (7:2.8.6-1ubuntu2, 7:2.8.8-0ubuntu0.16.04.1), libsystemd0:amd64 (229-4ubuntu10, 229-4ubuntu11), libsystemd0:i386 (229-4ubuntu10, 229-4ubuntu11), libavfilter-ffmpeg5:amd64 (7:2.8.6-1ubuntu2, 7:2.8.8-0ubuntu0.16.04.1), libdbusmenu-glib4:amd64 (12.10.3+16.04.20160223.1-0ubuntu1, 16.04.1+16.04.20160927-0ubuntu1), libswresample-ffmpeg1:amd64 (7:2.8.6-1ubuntu2, 7:2.8.8-0ubuntu0.16.04.1), google-chrome-stable:amd64 (53.0.2785.143-1, 54.0.2840

i'm having 2 issues might related. i use numix theme , icons. , then, have secondary lcd monitor wich use primary , disable 1 integrated laptop. , having lcd regular resolution i'd added 1 time long ago. from nowhere, after 1 reboot started have error (in short version) could not apply stored configuration monitors none of selected modes compatible possible modes: with this, custom resolution lcd monitor, dissapears, both monitors mirrored, , theme design dissapears. googling lot, i've found out if delete monitors.xml inside ˜/.config theme gets restore , if reboot machine, don't error. but when i'm going change monitor preferences want to, monitors.xml gets created, , if reboot, goes bananas again. some specs in case helps ubuntu 16.04 compaq cq40-500la samsungsyncmaster 943nwx help? cheers

i installed ubuntu 16.04 (but had same problem on 15.10) on lenovo yoga 300 , didn't display battery status. checked in terminal using command $ acpitool -b battery status : <not available> and also: $ upower -i /org/freedesktop/upower/devices/battery_bat0 native-path: (null) power supply: no updated: thursday 01 january 1970 05:30:00 ist (1477251370 seconds ago) has history: no has statistics: no unknown warning-level: unknown icon-name: '(null)'

i think saw before, can't find again. new ubunut. have toshiba satellite w/12 gb ram, windows 10 , 500gb hdd. installed 16.04 while , worked fine while. suddenly, when start laptop, doesn't boot way selection page - i.e. - ubuntu, efi, uefi, etc. shows on screen is: gnu brub version 2.02~beta2-36ubuntu3.2 minimal bash-like line editing supported. first word, tab lists possible command completions. anywhere else tab lists possible device or file completions. grub> when try scrolls past fast miss @ least half of list. how stop/pause scrolling read in listing? how load kernal or grub system booted option screen? far, thing have been able try "exit" until boots windows. how option screen , keep there? have tried read on , know if there guide walk newbie through maize of different commands , verbage. different normal windows stuff, reminds me of ms-dos yet more different seems. help. it seems /boot/ partition corrupt. try

attempting install tp-link archer t4u driver. downloaded files https://wikidevi.com/wiki/tp-link_archer_t4u have installed build-essentials . $ sudo make clean cd hal/outsrc/ ; rm -fr */*.mod.c */*.mod */*.o */.*.cmd */*.ko cd hal/outsrc/ ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd hal/led ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd hal ; rm -fr */*/*.mod.c */*/*.mod */*/*.o */*/.*.cmd */*/*.ko cd hal ; rm -fr */*.mod.c */*.mod */*.o */.*.cmd */*.ko cd hal ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd core/efuse ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd core ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd os_dep/linux ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd os_dep ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko rm -fr module.symvers ; rm -fr module.markers ; rm -fr modules.order rm -fr *.mod.c *.mod *.o .*.cmd *.ko *~ rm -fr .tmp_versions $ sudo make make arch=i386 cross_compile= -c /lib/modules/3.13.0-32-generic/build m=/media/yolande/usb20fd/wireless driver/attempt 1/rtl8812au_8821au_linux-ma

i'm trying install ubuntu 16.04 in brand new computer has windows 10 running on it. computer msi gl62 6qf-632nl, intel core i7-6700hq , nvidia geforce gtx 960m. i reserved portion of hard-drive described here , disabled windows fast start up, , booted using device. screen looks this: i clicked use device, waited memory stick boot, , after hitting install ubuntu or try ubuntu without installing screen froze @ following purple 5 dots loading screen: i tried bootable usb-sticks created in rufus (in windows) , startup disk creator (in ubuntu) no avail, problem must in system. i checked memory device , got following warning: [0.235565] acpi: ec: fail in evaluating _reg object of ec device. broke n bios suspected [5.156922] nouveau 0000:01:00.0: priv: hubo: 10ecco ffffffff (1b40822c) someone has guess of may happening? culprit , how can linux running on computer? edit -------------- i created follow up question unix & linux users. here of things mig

this question has answer here: how can install ubuntu without removing windows? 8 answers since vista no longer being supported, want replace ubuntu. had once before on different computer, i'm not sure how install ubuntu without deleting current operating system. use desktop lot not technician. it possible install ubuntu in "side-by-side" mode when installing. because you're installing desktop version of ubuntu (just guessing here) prompted during installation how install ubuntu. 1 of options available installing along side vista (if not listed click more options). after past window take window looks this: with top saying vista instead of windows 7. here can select how space windows vista have , how ubuntu have. here can continue installation normal. on next boot prompt operating system boot (and should everytime). note: following in

i decided start running dual monitors on computer. few days after whenever log in computer after enter password before desktop screen loads there graphical glitch @ bottom of right monitor. turns white , of time shows looks kind of static shown here: after computer works normally. question how can not this? this may not looking for, work clear static issue . . . , give option different wallpaper on each monitor. little wallpaper utility named "nitrogen". can use apt-get install grab or can find in software manager. workaround though not fix, easy use. set in autrun settings "name: nitrogen, command: nitrogen --restore , comment: whatever want". add image folder click on preferences , go there, pretty self explanatory.

how can unprivileged user prevent d-bus service launching? example, /usr/share/dbus-1/services/org.bluez.obex.service started session bus. there doesn't seem way "blacklist" it. it session bus question refers to. know if possible prevent specific services starting on session bus. the standard systemwide , per-session message bus setups configured in files /usr/share/dbus-1/system.conf , /usr/share/dbus-1/session.conf . these files system-local.conf or session-local.conf in /etc/dbus-1; can put local overrides in files avoid modifying primary configuration files. the configuration file xml document. must have following doctype declaration: i believe need modify /usr/share/dbus-1/session.conf /etc/dbus-1 in ubuntu linked to. note: limits of interest on systemwide bus, not user session buses think can use them on session bus. the element defines security policy applied particular set of connections bus. policy made of , elements. policies us

recently had installed pantheon (elementary os desktop environment). didn't it, uninstalled it, elementary os desktop still appear in title bar. , in shutdown button menu, ubuntu help replaced elementary os help . i want says ubuntu desktop , ubuntu help . how fix it? the output of lsb_release -a is: no lsb modules available. distributor id: elementary description: elementary os 0.4 loki release: 0.4 codename: loki for installation, use: sudo add-apt-repository ppa:elementary-os/daily sudo add-apt-repository ppa:elementary-os/os-patches sudo add-apt-repository ppa:elementary-os/testing sudo add-apt-repository ppa:mpstark/elementary-tweaks-daily sudo apt-get update sudo apt-get dist-upgrade sudo apt-get install elementary-theme elementary-icon-theme elementary-default-settings elementary-desktop for uninstallation, remove each repository manually, sudo apt-get autoremove . , rest synaptic package manager . the ppas used install eleme

hello got new gaming computer without os tried install xubuntu! it failed error message: "couldn't execute gnu grub install @ /dev/sdf fatal error!" my uncle said must install disk tried install "normal" ubuntu 16.04 lts disk... gave me same error message except of file path ... gnu grub install @ /dev/sda ... i got 1 hard drive 1 terabyte space why file path different got 1 hard drive... while booting live cd got instantly before loading bar appears error messages couldn't mount /dev/sda no medium found couldn't mount /dev/sdb no medium found couldn't mount /dev/sdc no medium found couldn't mount /dev/sdd no medium found couldn't mount /dev/sde no medium found couldn't mount /dev/sdf no medium found couldn't mount /dev/sdg no medium found i don't know how install ubuntu without clue why can't execute gnu grub install. and i'm wondering why shows @ xubuntu different file path in ubuntu got 1 hard driv

i have bunch of keys added ssh-agent , keys servers, repositories, etc. is there way remove ssh keys added ssh-agent when user locks system? my system right ubuntu desktop 16.04 gnome 3 you can watch events in dbus , on lock call ssh-add -d remove keys agent: #!/bin/bash dbus-monitor --session "type='signal',interface='org.gnome.screensaver'" | while read x; case "$x" in *"boolean true"*) echo screen_locked; ssh-add -d;; *"boolean false"*) echo screen_unlocked;; esac done but need export ssh_auth_sock environment variable script, able access agent. you can store above script clean_lock.sh , set execute bits ( chmod u+x clean_lock.sh ) , run script in background ./clean_lock.sh & .

i find lines start number 1 5 not start same pattern other line. then, put * in beginning of lines. there way in vim, sed, or maybe other options? thanks in advance! the following command in vim has been asked: :8,$s/^\([1-5].*\t\)\(.*\n[^\1].*\)/\*\1\2/g

i having problem recent files in nautilus: when clicking on it, getting error:(loosely translated): "something went wrong! error message not managed: message recipient disconnected message bus without replying" when looking @ system journals, getting list of messages below. do have suggestions of means, , how repaired? recent files. here lists of message getting in journal system. nov 1 16:43:36 jeremie systemd[1]: starting hostname service... nov 1 16:43:36 jeremie dbus[979]: [system] activated service 'org.freedesktop.hostname1' nov 1 16:43:36 jeremie systemd[1]: started hostname service. nov 1 16:43:42 jeremie gvfsd[1864]: failed connect mir: failed connect server socket: aucun fichier ou dossier de ce type nov 1 16:43:42 jeremie gvfsd[1864]: unable init server: impossible de se connecter : connexion refusée nov 1 16:43:42 jeremie gvfsd-recent[20814]: cannot open display: nov 1 16:43:42 jeremie gvfsd[1864]: dbus_mount_reply: error org

i have dell optiplex 755 core 2 duo made fresh install of 12.04. there no winows os on machine. has been running fine on week. keep getting system crashes due xserver-xorg-intel conflict, @ least know source of that. recently, running upgrade && update keep getting conflict, seemingly 1 update, recent linux-libc-dev . here's get: jay@jay-jay:/$ sudo apt-get upgrade && sudo apt-get update reading package lists... done building dependency tree reading state information... done following packages upgraded: linux-libc-dev 1 upgraded, 0 newly installed, 0 remove , 0 not upgraded. need 0 b/828 kb of archives. after operation, 0 b of additional disk space used. want continue [y/n]? y (reading database ... 208582 files , directories installed.) preparing replace linux-libc-dev 3.2.0-23.36 (using .../linux-libc-dev_3.2.0-24.37_i386.deb) ... unpacking replacement linux-libc-dev ... dpkg-deb (subprocess): data: internal gzip read error: ': data error' d

when type in terminal: sudo apt-get install "name of program" there isn't problem, when do: sudo add-apt-repository ppa:"smthg here" sudo apt-get update sudo apt-get install "name of program" i output: e:unable locate package "name of program" this has happened every time try install application ppa. output of uname -a: linux dcalderon-ms-7693 3.19.0-73-generic #81-ubuntu smp tue oct 18 16:03:37 utc 2016 x86_64 x86_64 x86_64 gnu/linux specific example: sudo add-apt-repository ppa:tualatrix/ppa sudo apt-get update sudo apt-get install ubuntu-tweak how should proceed? the packages in ppa:tualatrix/ppa compiled many ubuntu versions 14.04. trusty. running 16.04 or 16.10 , reason cannot install ubuntu-tweak . not error , fail installing other packages based on outdated ubuntu tutorials misleading (and many other users well)... there explanation manual install or alternative tweaks @ how can install ubuntu tweak

currently installed openvpn on ubuntu 14 vps. when try start admin web panel error: process started , exited: ['thu nov 3 11:17:49 2016 error: cannot open tun/tap dev /dev/net/tun: no such file or directory (errno=2)'] service failed start or returned error status when try start console: root@inforcer25:~# service openvpn start openvpn: unrecognized service edit: here's tutorial followed vps host https://www.pulseservers.com/billing/knowledgebase.php?action=displayarticle&id=3

i tried upgrade, errors occured. tail of output import process completed. done done. processing triggers libgdk-pixbuf2.0-0:amd64 (2.32.2-1ubuntu1.2) ... processing triggers ureadahead (0.100.0-19) ... processing triggers dbus (1.10.6-1ubuntu3.1) ... processing triggers resolvconf (1.78ubuntu2) ... processing triggers vlc-nox (2.2.2-5) ... processing triggers bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ... rebuilding /usr/share/applications/bamf-2.index... errors encountered while processing: emacs24 emacs error in function: not install upgrades upgrade has aborted. system in unusable state. recovery run (dpkg --configure -a). setting emacs24 (24.5+1-6ubuntu1) ... install cmake-data emacs24 install/cmake-data: byte-compiling emacs24 emacs24: relocation error: /usr/lib/x86_64-linux-gnu/libboost_system.so.1.58.0: symbol _znst7__cxx1112basic_stringicst11char_traitsicesaiceed1ev, version glibcxx_3.4.21 not defined in file libstdc++.so.6 link time reference install emacs

i read everywhere different opinions installing ubuntu touch on unsupported devices. have hibook pro chuwi , want install ubuntu touch. question this: @ present possible install ubuntu touch on hibook pro? link: http://en.chuwi.com/product/items/chuwi-hibook-pro.html

i updating 14.04 16.04 (via do-release-upgrade ). going fine until pulled ncurses dialogue handling conflicting config files "unattended upgrades" -- dialogue failed respond input (it froze). since there no way continue, killed process, leaving half upgraded. if try run do-release-upgrade again, claims version 16.04. have not restarted machine, don't know happen. if run apt-get -f dist-upgrade claims every package have no longer needed, tries configure them all, failing because of dependencies not configured. trying dpkg --configure -a gives same configuring errors (ex. 389-ds depends on 389-admin; however: package 389-admin not configured yet. ) output given this, still think there should way recover, seeing still running (for part). question is, way? fix missing packages, type in terminal: sudo apt-get update sudo apt-get install -f sudo dpkg --configure -a sudo apt-get upgrade sudo apt-get autoremove

this question has answer here: apt-get update cannot find ubuntu servers 13 answers apt-get update: failure fetch; can't connect sources 5 answers guys please sudo apt-get update isn't working , can't add repositories,thanks. hashik@hashik:~$ sudo apt-get update [sudo] password hashik: err:1 http://in.archive.ubuntu.com/ubuntu yakkety inrelease not resolve 'in.archive.ubuntu.com' err:2 http://security.ubuntu.com/ubuntu yakkety-security inrelease not resolve 'security.ubuntu.com' err:3 http://ppa.launchpad.net/noobslab/apps/ubuntu yakkety inrelease not resolve 'ppa.launchpad.net' err:4 http://in.archive.ubuntu.com/ubuntu yakkety-updates inrelease not resolve 'in.archive.ub hashik@hashik:~$ sudo apt-get update [sudo] passw

i've started using program needs numberpad activated, i've been using numlock on laptop (fn + numlk). now, every time turn off computer , turn on, numlock activated when don't want be. how stop happening, , activate numlock when command it? in advance, that controlled bios setting, might not ubuntu @ all. reboot , press del , f12 , or whatever key works on system bios screens, , poke around , see if there numlock setting. luck.

i running kubuntu in live mode , there icon on home desktop "install kubuntu 16.04.1 lts" when click it, runs moment in task bar , silently goes away without opening window or giving error. when running install command konsole ubiquity kde_ul error bus error (core dumped)

i want connect bluetooth headset (tsco-th5310h model) ubuntu 16.04. search same problems in other forums suggest commands: sudo apt-get install bluez bluez-btsco bluez-cups bluez-dbg bluez-hcidump bluez-tools python-bluez bluewho indicator-bluetooth libbluetooth-dev libbluetooth3 python-gobject python-dbus i have installed of them problem can pair device computer cannot makes connection... as can see connection button disabled. thank attention! reza for can go settings, software , updates, developer options , enable pre-released updates xenial-proposed. after cache updated sudo apt-get install pulseaudio pulseaudio-module-bluetooth then reboot , see if can connect

i've noticed number of people having issue install button being greyed out during installation type stage of installing. however, problem not greyed out. able click button , when do, responds , loading thing replaces cursor. after couple seconds cursor returns normal , nothing happens. i'm still looking @ select drive screen. if hit install again, seems act button, taking me screen selected erase disk on. i'm trying install live usb made on windows desktop using program rufus., passed disk check @ start of process. did not check sure hash of iso correct. also, had windows 7 on laptop (no longer installed) , have fedora still installed overwrite ubuntu.) screen asks if want erase disk, etc. states "this computer has no detected operating systems." the scenario iso used create installation media corrupted. can confirm checking iso file downloaded against list here using of methods listed in this answer . if still have issues after insuring have i

im trying app github , install on ubuntu. usually in windows download exe or msi file , 2x click it. in ubuntu either using ppa or deb file or github. i tried googling guides regarding github & closest concern here . tried following guide got stuck on step 2. guide wants me setup github account. i trying github app ( pesobit: pos-based cryptocurrency ). please guide me. that git repository contains install file, common place building , installation instructions. reads: see doc/readme-qt.rst instructions on building pesobit qt, intended-for-end-users, nice-graphical-interface, reference implementation of pesobit. in doc/readme-qt.rst can find installation instructions “for debian , ubuntu”: first, make sure required packages qt5 development of distribution installed, debian , ubuntu these are: apt-get install qt5-default qt5-qmake qtbase5-dev-tools qttools5-dev-tools build-essential libboost-dev libboost-system-dev libboost-filesystem-dev l

this question has answer here: ubuntu gets stuck in login loop 37 answers so tried rebooting pc , won't let me log in. kicks me log in screen i've tried rm./home/*/.xauthorith cannot remove directory and few of other more common ones purging nvidia. said no nvidia purge in terminal, type (use correct username): cd /home/your_username ls -l .iceauthority # (that's lower case l) ls -l .xauthority # (that's lower case l) if either ls command returns 1 of these (where shows root, instead of username): -rw------- 1 root root 242476 nov 6 12:48 .iceauthority -rw------- 1 root root 58 nov 6 12:48 .xauthority then type (changing your_username correct username): sudo chown your_username:your_username .iceauthority and/or sudo chown your_username:your_username .xauthority

i want add network block /etc/wpa_supplicant/wpa_suppplicant.conf file. the original file looks like, ctrl_interface=dir=/var/run/wpa_supplicant group=netdev update_config=1 network={ ssid="homewifi" psk="12345678" } and add new network block in command line, file : ctrl_interface=dir=/var/run/wpa_supplicant group=netdev update_config=1 network={ ssid="homewifi" psk="12345678" } network={ ssid="new_wifi" psk="00000000" } i want not manual, command line . i red https://wiki.archlinux.org/index.php/wpa_supplicant this, if run # wpa_supplicant -b -i interface -c /etc/wpa_supplicant/wpa_supplicant.conf # wpa_cli > scan ok > scan_results > add_network 0 > set_network 0 ssid "new_wifi" > set_network 0 psk "0000000" > enable_network 0 ctrl-event-connected - connection completed. > save_config ok will add new network block successfully. but b

i'd boot linux kernel hard disk gui. how may burn ubuntu iso image hard disk, connected embedded board, when boot embedded device, there's ubuntu os gui development? thanks! i kind of agree woeitg's comment, if need should work if "dd" iso blank hard drive. command this: root@localhost$ dd if=/home/ubuntu.iso of=/dev/sdb bs=2m be careful! if target wrong wipe hard drive. check drive try: root@localhost$ ls -l /dev/disk/by-id/ that show brand/make of hard drive , sdx udev has assigned it.

i'm running ubuntu 14.04 on laptop. have script placed on /etc/init.d disable it: #!/bin/bash # device id of synaptics touchpad id=$(xinput list --id-only 'at translated set 2 keyboard') xinput float $id it works fine, need run before login screen appears, i've made: ln -s /etc/init.d/disablekeyboard.sh /etc/rc3.d/s99disablekeyboard.sh but doesn't work, know why it's not running during boot? thanks. to run script @ startup, before login, edit /etc/rc.local , add commands. just add line: /etc/init.d/disablekeyboard.sh one line above line: exit 0 # script executed @ end of each multiuser runlevel. # make sure script "exit 0" on success or other # value on error. # in order enable or disable script change execution bits.

i checked every article in askubuntu.com related setting 3 or 4 monitor 2 graphics card. there response regarding , says not possible @ time(around 2011 - 2014) because has bug. interested in resent discoveries. dose new x11 support putting monitors separate screens? have success stories?

after update top panel showing time , launchers on left side don't appear. otherwise desktop used windows. if log in guest account works well, it's main account. tried couple if things ifound here in forum, nothing worked. appreciate easy solution. thanks i had similar problem after updating 16.04, (already 16.04) had "password loop" problem on startup, it's discussed here . in both cases cause graphic adapter driver (newer versions of xorg, lightdm or whatever after update/upgrade conflicted it). reinstalling/updating nautilus, xorg etc. didn't complete uninstall of graphic driver did job. in case nvidia typed command line sudo apt-get purge nvidia* , restarted. of course started crapy resolution , required reinstall driver worked , works far.

i have vps i'm using webserver , email server. have issue postfix. it's not asking password on outgoing email unauthorized domain. this telnet call non-existent domain local email: telnet smtp.mydomain.com 25 trying xxx.xxx.xxx.xxx... connected smtp.mydomain.com. escape character '^]'. 220 smtp.mydomain.com esmtp postfix ehlo smtp.mydomain.com 250-smtp.mydomain.com 250-vrfy 250-etrn 250-auth plain login 250-auth=plain login 250-enhancedstatuscodes 250 8bitmime mail from:<hello@hello.com> 250 2.1.0 ok rcpt to:<myaddress@mydomain.com> 250 2.1.5 ok data 354 end data <cr><lf>.<cr><lf> subject: test hello . 250 2.0.0 ok: queued 94dc2150bca quit 221 2.0.0 bye on other hand, if send email existing internal address existing internal address through telnet, postfix stops sending because needs authentication. telnet smtp.mydomain.com 25 trying xxx.xxx.xxx.xxx... connected smtp.mydomain.com. escape character '^]'. 220 smtp.

i have old dell computer running windows xp. wanted run ubuntu off flash drive. went website below directions. downloaded progam site below told needed x86 processor fine i686 cpu when tried boot. suggestions? https://www.ubuntu.com/download/desktop/install-ubuntu-desktop

i have used below commands uninstall samba: sudo apt-get remove --purge samba sudo apt-get remove --purge smbclient libsmbclient but when search samba corresponding files on nautilus browser still shows me samba files showed in picture below.

i'd write bash script automates process: vi filename.pdf (open "filename.pdf" using vi) :4,7d (in vi command mode, delete lines 4-7) o (in vi command mode, tap shift+o (captial oh) create new line) <<>> (in vi insert mode, type 2 lesser-thans , 2 greater-thans) esc (switch vi command mode) :wq (in vi command mode, save file , quit vi) echo "complete." you might want use ed (which designed automate scripting) ed < edit.sed filename.pdf where edit.sed is: 4,7d <<>> . w q this insert <<>> in fifth line.

is there way keep icons aligned both horizontally , vertically in grid windows? weird.

i use ubuntu 16.04 thunderbird 45.4. when receive new email, want thunderbird tray icon in right upper corner change (so know have unread email). saw somewhere icon should turn blue color. icon remains same time. how can change that? tltr: why thunderbird tray icon not turn blue when new email arrives? edit: possible method described @ old link why won't thunderbird report notifications indicator-applet on 12.04? help? the reason don't want try described in link above don't know how undo changes performed "sudo apt-get install notification-daemon esound python-notify" (i new ubuntu). if tells me how undo changes try , see. solved: turned out thunderbird tray icon did never turn blue because firefox extension gmail notifier accesses new emails first. when turnd extension off, started work well.

title says all, really. reason, there absolutely no settings available in system settings app: no settings :( even if go settings via other apps, still don't appear. when installed gnome-system-settings , showed in app didn't work. i've tried reinstalling ubuntu-desktop , i'm pretty sure works 14.04. any ideas appreciated. i had problem think, there few options on settings. found out xdg_current_desktop can set wrong, settings doesnt appear. created script unsets xdg_current_desktop variable, , works. #!/bin/sh unset xdg_current_desktop unity-control-center

my system running ubuntu 16.04 lts , have been facing weird problem ever since started using it. many times, when try open website on browser (firefox), i'm told "server not found" , after refreshing page numerous times can webpage. problem not occur or every website simultaneously, happen enough annoy hell out of me. can shed light on this? ps. issue seems unique 16.04. use lan connection , nobody else using connection has problem (none of them running 16.04 though). also, had 12.04 before on same system , worked fine. edit tracepath google.com 1?: [localhost] pmtu 1500 1: 192.168.0.1 0.647ms 1: 192.168.0.1 0.706ms 2: 10.119.246.117 1.054ms 3: 10.161.18.177 9.200ms asymm 7 4: 10.255.235.197 8.859ms asymm

this question has answer here: how install software or upgrade old unsupported release? 9 answers i want upgrade computer ubuntu 10.04 . when go open update manager, says version old (as if didn't know that) , need update, manager won't run. have no idea point, appreciated! you start upgrading 12.04, , 14.04 , forth! old images still here: http://releases.ubuntu.com/ you want make jump lts lts fast upgrade present lts 16.04. best of luck!

how dd command internally works? caches data in copy operation? i testing usb pen drive read , write speed operation. same block size , same file size show large difference in speed. dd reads amount of bytes mentioned in bs parameter (default 512 bytes) source on each read(2) call, , writes destination using write(2) . there no caching involved here, buffering involved here data being written.