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tSquirrel's questions

Martin Hope
tSquirrel
Asked: 2014-06-13 06:49:22 +0800 CST
  • 2

This is in regards to the actual "wipe" command. I've looked through the man page and not gotten an answer. I've been unable to find any documentation online which explains what the verbose output means. Does anyone have any insight?

enter image description here

The above output is from a "quick" wipe (N number of passes with random data). Some files (small in size) wipe relatively quickly so the output lists the total bytes wiped. But others show a progress which displays [ x / y], where value "x" counts up during each wipe iteration. And it's unclear what the value of "y" is. In the above image, "4228" what? That value remains constant with each iteration. The file in question is about 64MB in size.

The second image here is taken from wiping a copy of the same file, but in "standard" mode, which performs ~34 passes. In the standard mode, what does the value in parenthesis "(14)" mean? This value seems to change with each pass.

enter image description here

secure-erase
Martin Hope
tSquirrel
Asked: 2014-06-09 06:06:13 +0800 CST
  • 3

I'm using SRM to securely delete files and directories. Most of the data is on FAT and NTFS volumes since I dualboot with Windows (I'm trying to use Ubuntu as much as possible and stay away from Windows).

However every now and then I run into an error Error: File <filepath> - file is hardlinked 1 time(s), skipping! which I discovered means there's a hardlink to the file.

I did some searching and found the NON-srm way to delete all linked files is with the command (example:) $ sudo find ~ -xdev -samefile '/home/USERNAME/Desktop/hardlinks (copy).txt' | xargs rm

Unfortunately the above doesn't work if I replace "RM" with "SRM"...

Error: File /home/USERNAME/Desktop/hardlinks - No such file or directory
Error: File (copy).txt - No such file or directory
Error: File /home/USERNAME/Desktop/links.txt - file is hardlinked 1 time(s), skipping!

enter image description here

Is there a way to achieve the same result: search for hard links for a specific file, then process them through SRM? Preferably with the arguments -rvz (recursive, verbose, overwrite with zero)?

note: I also tried appending -print0 to FIND and/or -0 to XARGS which didn't help

find
Martin Hope
tSquirrel
Asked: 2014-06-04 11:09:41 +0800 CST
  • -1

14.04 / Firefox 29.0

I've been using Bleachbit to clear usage/file history, and for the most part it works great. However, it doesn't seem to clear the website hostnames out of the URL, at all. These addresses are not bookmarked. Also, the total URL isn't preserved, just the hostname.

  1. Visit site http://www.bluesnews.com/some_random_URL_string
  2. Exit Firefox
  3. Run Bleachbit, with ALL Firefox options selected
  4. Restart Firefox
  5. Check history: completely empty, other than bookmarked sites. www.bluesnews is NOT bookmarked
  6. Type "blue" which is Firefox automatically completes as "http://www.bluesnews.com/"

Alternate Step #3: Use Firefox's built-in "Clear History" and select ALL entries with a time frame of "Everything". Same result as above.

My inquiry in BB forums hasn't been responded to. I found Dan's proposed solution, however changing autocomplete in about:config only turns off the function, it doesn't actually stop storing URLs.

firefox
Martin Hope
tSquirrel
Asked: 2014-06-01 07:06:45 +0800 CST
  • 2

I'm still getting used to Linux, having come from Windows. I was receiving an error that "compiz" had crashed a few times so I figured I'd uninstall it.

sudo apt-get remove compiz
sudo apt-get install compiz

I logged out then back in, after that, the GUI was totally gone and I have no idea how to get it back or what I need to do to restore the GUI to what it was before I killed poor Compiz. GUI was pretty much unmodified after a fresh install of 14.04

How can I fix it? I'm not even sure how to get to a terminal or anything. The login screen looks normal, but after logging in, it's a totally bare desktop with my backround and a few icons. No Dash, toolbar, etc. Hot Keys don't seem to work either (Super = Dash doesn't work, etc); although I did accidently open "Disk" UI. Not sure how.

Please Help! Right now I'm working off my W7 dualboot.

unity
Martin Hope
tSquirrel
Asked: 2014-05-22 07:12:23 +0800 CST
  • 24

So I'm attempting to dual-boot OS X 10.8.5 (native OS) and Ubuntu 14.04. I installed Ubuntu (hooray!) but upon booting into Ubuntu I discovered I have no network connection from the OS. I'm very new to Linux.

I've noticed some similar posts, however the only "solution" I've seen so far is to screw the wireless connection and buy a USB-ethernet adapter. If I was using this computer at home that'd be fine. But this is in an office and it's WiFi only.

Is there anyway to get the wireless adapter to work?

Mac Book Pro, Retina, 13-inch, Late 2012 CPU 2.5 Ghz Intel Core i5 Memory 8GB

########## wireless info START ##########

##### release #####

Distributor ID: Ubuntu
Description:    Ubuntu 14.04 LTS
Release:    14.04
Codename:   trusty

##### kernel #####

Linux ______-MacBookPro 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

##### arch #####

x86_64

##### lspci #####

02:00.0 Ethernet controller [0200]: Broadcom Corporation Device [14e4:16a3] (rev 21)
    Subsystem: Broadcom Corporation Device [14e4:16a3]
02:00.1 SD Host controller [0805]: Broadcom Corporation BCM57765/57785 SDXC/MMC Card Reader [14e4:16bc] (rev 21)

03:00.0 Network controller [0280]: Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] (rev 02)
    Subsystem: Apple Inc. AirPort Extreme [106b:010f]
    Kernel driver in use: bcma-pci-bridge

##### lsusb #####

Bus 002 Device 005: ID 05ac:0259 Apple, Inc. 
Bus 002 Device 008: ID 05ac:828c Apple, Inc. 
Bus 002 Device 004: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 002 Device 003: ID 0424:2512 Standard Microsystems Corp. USB 2.0 Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 05ac:8510 Apple, Inc. FaceTime HD Camera (Built-in)
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 1058:0748 Western Digital Technologies, Inc. My Passport 1TB USB 3.0
Bus 004 Device 002: ID 2109:8110  
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 045e:00db Microsoft Corp. Natural Ergonomic Keyboard 4000 V1.0
Bus 003 Device 002: ID 2109:2811  
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA Card Info #####

##### rfkill #####

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

##### iw reg get #####

country 00:
    (2402 - 2472 @ 40), (3, 20)
    (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
    (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
    (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
    (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS

##### interfaces #####

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

##### iwconfig #####

##### route #####

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

##### resolv.conf #####

##### nm-tool #####

NetworkManager Tool

State: disconnected

##### NetworkManager.state #####

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf #####

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### iwlist #####

No way to aquire root rights found.

##### iwlist channel #####

##### lsmod #####

b43                   387371  0 
mac80211              626489  1 b43
cfg80211              484040  2 b43,mac80211
ssb                    62379  1 b43
bcma                   52096  1 b43

##### modinfo #####

filename:       /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/b43/b43.ko
firmware:       b43/ucode9.fw
firmware:       b43/ucode5.fw
firmware:       b43/ucode16_mimo.fw
firmware:       b43/ucode15.fw
firmware:       b43/ucode14.fw
firmware:       b43/ucode13.fw
firmware:       b43/ucode11.fw
license:        GPL
author:         Rafał Miłecki
author:         Gábor Stefanik
author:         Michael Buesch
author:         Stefano Brivio
author:         Martin Langer
description:    Broadcom B43 wireless driver
srcversion:     BED87D210887FFC71A4BDE0
alias:          bcma:m04BFid0812rev1Dcl*
alias:          bcma:m04BFid0812rev18cl*
alias:          bcma:m04BFid0812rev17cl*
alias:          bcma:m04BFid0812rev11cl*
alias:          ssb:v4243id0812rev10*
alias:          ssb:v4243id0812rev0F*
alias:          ssb:v4243id0812rev0D*
alias:          ssb:v4243id0812rev0C*
alias:          ssb:v4243id0812rev0B*
alias:          ssb:v4243id0812rev0A*
alias:          ssb:v4243id0812rev09*
alias:          ssb:v4243id0812rev07*
alias:          ssb:v4243id0812rev06*
alias:          ssb:v4243id0812rev05*
depends:        bcma,ssb,mac80211,cfg80211
intree:         Y
vermagic:       3.13.0-24-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        :47:4B:C5:C4:31:20:88:0C:1B:94:A5:39:F4:31
sig_hashalgo:   sha512
parm:           bad_frames_preempt:enable(1) / disable(0) Bad Frames Preemption (int)
parm:           fwpostfix:Postfix for the .fw files to load. (string)
parm:           hwpctl:Enable hardware-side power control (default off) (int)
parm:           nohwcrypt:Disable hardware encryption. (int)
parm:           hwtkip:Enable hardware tkip. (int)
parm:           qos:Enable QOS support (default on) (int)
parm:           btcoex:Enable Bluetooth coexistence (default on) (int)
parm:           verbose:Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug (int)
parm:           pio:Use PIO accesses by default: 0=DMA, 1=PIO (int)
parm:           allhwsupport:Enable support for all hardware (even it if overlaps with the brcmsmac driver) (int)

filename:       /lib/modules/3.13.0-24-generic/kernel/drivers/ssb/ssb.ko
license:        GPL
description:    Sonics Silicon Backplane driver
srcversion:     3DE188310F77C566C2E8CB3
alias:          pci:v000014E4d00004350sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000432Csv*sd*bc*sc*i*
alias:          pci:v000014E4d0000432Bsv*sd*bc*sc*i*
alias:          pci:v000014E4d00004329sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004328sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004325sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004324sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000A8D6sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004322sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004321sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004320sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004319sv*sd*bc*sc*i*
alias:          pci:v000014A4d00004318sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004318sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004315sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004312sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004311sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004307sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004306sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004301sv*sd*bc*sc*i*
depends:        
intree:         Y
vermagic:       3.13.0-24-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        :47:4B:C5:C4:31:20:88:0C:1B:94:A5:39:F4:31
sig_hashalgo:   sha512

filename:       /lib/modules/3.13.0-24-generic/kernel/drivers/bcma/bcma.ko
license:        GPL
description:    Broadcom's specific AMBA driver
srcversion:     E41B811D88783DD5BC38565
alias:          pci:v000014E4d00004727sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004365sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004359sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004358sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004357sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004353sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004331sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000A8D8sv*sd*bc*sc*i*
alias:          pci:v000014E4d00004313sv*sd*bc*sc*i*
alias:          pci:v000014E4d00000576sv*sd*bc*sc*i*
depends:        
intree:         Y
vermagic:       3.13.0-24-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        :47:4B:C5:C4:31:20:88:0C:1B:94:A5:39:F4:31
sig_hashalgo:   sha512

##### modules #####

lp
rtc

##### blacklist #####

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/fbdev-blacklist.conf]
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist gx1fb
blacklist gxfb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist nvidiafb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist viafb
blacklist vt8623fb

##### udev rules #####

##### dmesg #####

[    5.075877] bcma: bus0: Found chip with id 0x4331, rev 0x02 and package 0x09
[    5.075904] bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x25, class 0x0)
[    5.075926] bcma: bus0: Core 1 found: IEEE 802.11 (manuf 0x4BF, id 0x812, rev 0x1D, class 0x0)
[    5.075969] bcma: bus0: Core 2 found: PCIe (manuf 0x4BF, id 0x820, rev 0x13, class 0x0)
[    5.136742] bcma: bus0: Bus registered
[    5.489707] b43-phy0: Broadcom 4331 WLAN found (core revision 29)
[    5.490133] b43-phy0: Found PHY: Analog 9, Type 7 (HT), Revision 1
[    5.490749] b43 bcma0:0: Direct firmware load failed with error -2
[    5.490750] b43 bcma0:0: Falling back to user helper
[    5.496210] b43 bcma0:0: Direct firmware load failed with error -2
[    5.496211] b43 bcma0:0: Falling back to user helper
[    5.496741] b43 bcma0:0: Direct firmware load failed with error -2
[    5.496741] b43 bcma0:0: Falling back to user helper
[    5.497163] b43 bcma0:0: Direct firmware load failed with error -2
[    5.497164] b43 bcma0:0: Falling back to user helper
[    5.497850] b43-phy0 ERROR: Firmware file "b43/ucode29_mimo.fw" not found
[    5.497851] b43-phy0 ERROR: Firmware file "b43-open/ucode29_mimo.fw" not found
[    5.497852] b43-phy0 ERROR: You must go to http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website.

########## wireless info END ############
wireless