ubuntu-11.10 interview questions
Top ubuntu-11.10 frequently asked interview questions
I have Windows, Mac, and Linux computers; but I am only able to connect to some of my company's websites through the Windows and Mac machines at the moment because they are the only ones with RSA SecurID software tokens. I'm curious: is it possible to set up a SecurID software token to work on a Linux system (in my case, Ubuntu)?
Source: (StackOverflow)
I want to make gnome-terminal transparent. To do this I have to select option Transparent background and move the slider under Background tab from the menu - Edit -> Profile Preferences. It becomes transparent but only the desktop wallpaper is shown in the background.
But I want to see actual open applications or windows on the background. How do I do this? (Preferably in Ubuntu 11.10)
Source: (StackOverflow)
I have installed centos on my /dev/sda9.
There is windows 7 on my first partition.
Now I try to install ubuntu on /dev/sda11
While installing,it shows the following error.
migration-assistant needs to mount a partition,but cannot do so because the following mount point could not be mounted:
/dev/sda9
please close any application using this mount points.
would you like migration-assistant to try to unmount these partition again?
How do I address this error?
Source: (StackOverflow)
After install some packages, I don't have sound! I installed Rosegarden, VMPK (piano software), Drumstick Virtual Piano and TiMidity. At the beginning, all works fine, but when I reset my PC, I don't listen anything.
I would like how can I reinstall Alsa. I want to have it completely new, all the settings by default, for example when Ubuntu is installed.
Source: (StackOverflow)
In Ubuntu 11.10, is there any reason why I can only open one folder at a time via the GUI?
I click home folder, navigate to the folder I want to go to, then I hit home folder again to bring up another home folder and nothing opens. I'm so confused about the laptops I can do this on. I can do this on Work PC's, but not on this PC however.
Source: (StackOverflow)
I have HP 620 WT162EA laptop (64bit processor and 2gb ddr3 ram memory). Based on your experience, which version of ubuntu I shall install: 32bit or 64bit?
From what I already read here, people suggest 64bit version if there is more than 4gb of ram memory, but in terms of performance ll it work better than 32bit on my laptop? Vice versa?
I'm complete newbie in this field and I just came here to ask a question :)
Thanks!
Source: (StackOverflow)
I'm using Ubuntu 11.10 and try to connect to a Bluetooth device from the command line but I always need to enter the PIN in a graphical dialog box. The commands I use:
root@ubuntu:~# hcitool scan
Scanning ...
00:00:00:00:00:00 device
root@ubuntu:~# rfcomm connect 0 00:00:00:00:00:00 1
And after this, the enter PIN dialog appears.
Is there any way to keep the interaction in the command line? In my environment it is not allowed to use GUIs or require the user to enter PINs. Btw, the PIN is always the same but the MAC will change from time to time.
Source: (StackOverflow)
I know a lot of people are having problems similar to this one, but I don't think this is a duplicate. My situation is a bit different and none of the solutions that are working for other people have worked for me.
I have two hard drives, one with just one primary partition (sdb) and one with several partitions (sda). My fdisk -l looks like this:
Disk /dev/sdb: 750.2 GB, 750156374016 bytes
16 heads, 63 sectors/track, 1453521 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x316f8b1c
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 1465145135 732572536+ 7 HPFS/NTFS/exFAT
Disk /dev/sda: 320.1 GB, 320072933376 bytes
210 heads, 6 sectors/track, 496144 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xeb0feb0f
Device Boot Start End Blocks Id System
/dev/sda1 * 6 206847899 103423947 7 HPFS/NTFS/exFAT
/dev/sda2 206847998 625141759 209146881 5 Extended
/dev/sda5 206848000 616753151 204952576 83 Linux
/dev/sda6 616755200 625141759 4193280 82 Linux swap / Solaris
I have Ubuntu 11.10 installed on sda5 and windows 7 installed on sdb1 (I'm not sure what's on the primary partition /dev/sda1 -- some old operating system I don't care about). I installed Windows first, then installed Ubuntu. I'm using grub as my boot loader, and I'm able to boot to Ubuntu (and using it now) but at first update-grub2 didn't even see Windows 7. After searching online, I found a common solution to this was to create an /etc/grub.d/11_Windows init script containing:
#! /bin/sh -e
echo Adding Windows >&2
cat << EOF
menuentry "Windows 7″ {
set root=(hd1,1)
chainloader +1
}
Here I set root to (hd1,1) to match sdb1. This added Windows 7 to the grub menu, but if you select it, it just shows a blank screen and hangs (it does not boot into Windows 7). I've tried a number of solutions given to people having similar (but not identical) problems as mine and can't get anything to work.
Can anyone help me?
Here is the output of Boot Info Script:
Boot Info Script 0.60 from 17 May 2011
============================= Boot Info Summary: ===============================
=> Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector
535689840 of the same hard drive for core.img. core.img is at this
location and looks for ?? on this drive.
=> Windows is installed in the MBR of /dev/sdb.
sda1: __________________________________________________________________________
File system:
Boot sector type: Grub Legacy
Boot sector info: Grub Legacy (v) is installed in the boot sector of
sda1 and looks at sector 509109856 of the same hard
drive for the stage2 file, but no stage2 files can be
found at this location.
Mounting failed: mount: unknown filesystem type ''
sda2: __________________________________________________________________________
File system: Extended Partition
Boot sector type: Unknown
Boot sector info:
sda5: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 11.10
Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
sda6: __________________________________________________________________________
File system: swap
Boot sector type: -
Boot sector info:
sdb1: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows XP
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files: /Windows/System32/winload.exe
============================ Drive/Partition Info: =============================
Drive: sda _____________________________________________________________________
Disk /dev/sda: 320.1 GB, 320072933376 bytes
210 heads, 6 sectors/track, 496144 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sda1 * 6 206,847,899 206,847,894 7 NTFS / exFAT / HPFS
/dev/sda2 206,847,998 625,141,759 418,293,762 5 Extended
/dev/sda5 206,848,000 616,753,151 409,905,152 83 Linux
/dev/sda6 616,755,200 625,141,759 8,386,560 82 Linux swap / Solaris
Drive: sdb _____________________________________________________________________
Disk /dev/sdb: 750.2 GB, 750156374016 bytes
16 heads, 63 sectors/track, 1453521 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sdb1 * 63 1,465,145,135 1,465,145,073 7 NTFS / exFAT / HPFS
"blkid" output: ________________________________________________________________
Device UUID TYPE LABEL
/dev/sda5 20d584af-9217-4d71-a822-7663b9530da4 ext4
/dev/sda6 ce8b7879-9234-4c89-b62f-a09737d1d1cf swap
/dev/sdb1 22A4F723A4F6F85D ntfs windows7
================================ Mount points: =================================
Device Mount_Point Type Options
/dev/sda5 / ext4 (rw,errors=remount-ro,commit=0)
/dev/sdb1 /media/windows-7 fuseblk (rw,noexec,nosuid,nodev,allow_other,blksize=4096,default_permissions)
=========================== sda5/boot/grub/grub.cfg: ===========================
--------------------------------------------------------------------------------
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set=root 20d584af-9217-4d71-a822-7663b9530da4
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=auto
load_video
insmod gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set=root 20d584af-9217-4d71-a822-7663b9530da4
set locale_dir=($root)/boot/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 0,71,115; then
clear
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
if [ ${recordfail} != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, with Linux 3.0.0-14-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set=root 20d584af-9217-4d71-a822-7663b9530da4
linux /boot/vmlinuz-3.0.0-14-generic root=UUID=20d584af-9217-4d71-a822-7663b9530da4 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-3.0.0-14-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-14-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set=root 20d584af-9217-4d71-a822-7663b9530da4
echo 'Loading Linux 3.0.0-14-generic ...'
linux /boot/vmlinuz-3.0.0-14-generic root=UUID=20d584af-9217-4d71-a822-7663b9530da4 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.0.0-14-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/11_Windows ###
menuentry âWindows 7â³ {
set root=(hd1,1)
chainloader +1
}
### END /etc/grub.d/11_Windows ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set=root 20d584af-9217-4d71-a822-7663b9530da4
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set=root 20d584af-9217-4d71-a822-7663b9530da4
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
--------------------------------------------------------------------------------
=============================== sda5/etc/fstab: ================================
--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda5 during installation
UUID=20d584af-9217-4d71-a822-7663b9530da4 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=ce8b7879-9234-4c89-b62f-a09737d1d1cf none swap sw 0 0
/dev/sdb1 /media/windows-7 ntfs-3g quiet,defaults,locale=en_US.utf8,umask=0,noexec 0 0
--------------------------------------------------------------------------------
=================== sda5: Location of files loaded by Grub: ====================
GiB - GB File Fragment(s)
= boot/grub/core.img 1
= boot/grub/grub.cfg 1
= boot/initrd.img-3.0.0-14-generic 3
= boot/vmlinuz-3.0.0-14-generic 1
= initrd.img 3
= vmlinuz 1
======================== Unknown MBRs/Boot Sectors/etc: ========================
Unknown BootLoader on sda2
00000000 0d d6 82 9e f4 dd 3d 74 1c cd c2 f8 71 11 73 56 |......=t....q.sV|
00000010 e8 03 9d f7 fc 86 9b 37 8d 79 4e 66 ca ac 9a 96 |.......7.yNf....|
00000020 e9 77 46 3f 3b 8c 7e f6 63 f0 d1 4e e3 fc 4a e3 |.wF?;.~.c..N..J.|
00000030 ff 04 79 9c ce 2b 4e 6d 4e 9a 86 d5 f4 c5 2f 9c |..y..+NmN...../.|
00000040 d6 b5 90 8e 91 29 94 d6 66 0c b8 40 1a 2f 82 6f |.....)..f..@./.o|
00000050 18 03 f2 ea b8 73 4d e9 2b e8 1a 05 aa 1b 75 b2 |.....sM.+.....u.|
00000060 9e e6 f9 f7 8c 09 bb 97 fd 93 df e7 33 26 da d7 |............3&..|
00000070 20 e4 f1 ad 5d e4 89 31 87 38 cb bc b5 15 e5 dc | ...]..1.8......|
00000080 fa 80 c3 b7 cb 9a b6 26 a4 29 33 e3 de f7 a4 eb |.......&.)3.....|
00000090 3c f9 fc 25 79 5f 43 da 0c 65 b8 57 f6 b3 c8 b7 |<..%y_C..e.W....|
000000a0 d2 c6 79 e0 68 cc 43 75 ff ea 87 95 cc 11 f6 da |..y.h.Cu........|
000000b0 6c 43 76 27 0e fb 3c 71 9e 41 7e 0a 9c 06 e7 74 |lCv'..<q.A~....t|
000000c0 2f bc 3d 7a 74 00 ed 74 3e f4 26 63 73 c4 61 fa |/.=zt..t>.&cs.a.|
000000d0 04 90 02 d4 c3 5c 77 9d 31 9f 66 ae 70 46 e7 0a |.....\w.1.f.pF..|
000000e0 03 98 2b 9e c6 5c e5 24 e3 83 7c f3 ac 73 b8 ad |..+..\.$..|..s..|
000000f0 cc 0f 9a 91 86 2c a4 a1 05 b4 39 a8 4f 79 15 21 |.....,....9.Oy.!|
00000100 3d 45 49 4f 4d d9 cb 40 e7 32 e4 cd 55 ec 6a 69 |=EIOM..@.2..U.ji|
00000110 5e d5 46 5e 16 d9 7e d2 78 83 74 8c 73 d8 fb 9e |^.F^..~.x.t.s...|
00000120 41 bb a8 83 9b f2 b8 19 8f ff 09 a0 1c 7c 05 50 |A............|.P|
00000130 57 c3 98 88 ec 67 fc 7e c2 b8 7b 0b fa 93 9c 01 |W....g.~..{.....|
00000140 e8 1e ea 55 d2 fd a5 a6 fb 0a fc 65 9d 8f bc 78 |...U.......e...x|
00000150 d8 d8 17 d5 f9 f2 20 dd bf 3b 4c ba aa 93 be 6a |...... ..;L....j|
00000160 f6 ef bb 4f 27 d6 a9 a8 31 f7 a8 27 fb 33 f4 01 |...O'...1..'.3..|
00000170 3f 50 bf 2a a2 d3 24 9d f7 8f 70 28 8b db e8 34 |?P.*..$...p(...4|
00000180 1c fd ee ac 4c 5a 6f be 34 d6 7b 5f 1d 77 52 af |....LZo.4.{_.wR.|
00000190 4e 1a e3 0b 73 b2 9b e0 27 f0 b3 cc cf b4 2d ed |N...s...'.....-.|
000001a0 90 6f a2 68 3b db 40 36 ca a0 e1 f9 c4 61 7c 44 |.o.h;.@6.....a|D|
000001b0 19 0c 95 f6 6b b4 8d ad 7a 6e d0 88 f2 9e 00 d1 |....k...zn......|
000001c0 c6 ff 83 d1 c6 ff 02 00 00 00 00 a8 6e 18 00 d1 |............n...|
000001d0 c6 ff 05 d1 c6 ff c2 ae 6e 18 40 f9 7f 00 00 00 |........n.@.....|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
00000200
=============================== StdErr Messages: ===============================
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
Source: (StackOverflow)
$ pwd
$ /home/durrantm/Downloads/tmux-1.6
durrantm.../tmux-1.6$ ./configure && make
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
...
...
configure: error: "libevent not found"
durrantm.../tmux-1.6$ sudo apt-get install libevent
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libevent
Source: (StackOverflow)
This seemed to happen out of the blue.
I have been using Opera for years.
I can't find anywhere in Gmail to change the default font that is used in Opera.
Ubuntu is Version 11
Opera is version 11.6
In Firefox the font is normal size.
I have tried playing around with both all the browser setting I can find plus Ubuntu system settings (I had seen some mentions of Opera using the system default font sometimes) but no success so far.
Really bumming as I have been using Opera for two years and if I can't resolve it I will not be able to use it.
I can switch to Firefox but I don't want to.
Source: (StackOverflow)
I already have Windows 7 and Ubuntu 11.10 installed on my laptop, and would like to add Windows 8 Consumer Preview to that list. Here's some information which may be relevant to this question:
- The laptop only has one hard drive.
- The hard drive has plenty of space to accommodate all 3 OSes
- The GRUB menu currently controls which OS boots up.
- When I originally decided to dual boot, I already had Windows 7 installed and I re-partitioned my hard drive and installed Ubuntu on the new partition.
What would be the correct way to install Windows 8 without screwing up Windows 7 and Ubuntu?
Source: (StackOverflow)
I would like to recover Linux terminal command history behaviour after updating from Ubuntu 10.04 to 11.10.
I lost the great terminal feature of accessing recent commands through the up and down arrow keys, or the command history is not being saved anymore.
Can somebody guide how to recover that behaviour?
Source: (StackOverflow)
I use ubuntu 11.10 and recently switched to terminator for my terminal. I am happy with it with one exception, I cannot figure out how to scroll up using the keyboard. I used to use gnome-terminal and would ctrl+shift+{arrowup || pageup} but cannot find a keybinding for scrolling in terminator.
Source: (StackOverflow)
When I try to colorize the bash prompt like this:
export PS1="\e[0;31m[\u@\h \W]\$ \e[m "
it breaks the carriage return (instead of going to a new line when line is full, it starts in the same line and erases the input text).
If I remove the color sequence it works fine.
I use Ubuntu 11.10 and terminal (guake has the same bug too).
Source: (StackOverflow)
Windows 7 was pre-installed on my machine. Ubuntu 11.10 doesn't boot after I installed it. Once Ubuntu finished its installation, I restarted.
After that, it just boots straight to Windows 7, no sign on Ubuntu at all.
Source: (StackOverflow)