10,901 reputation
53558
bio website renanbirck.blogspot.com
location Santa Maria, Brazil
age 24
visits member for 3 years, 1 month
seen 8 hours ago

profile for Renan on Stack Exchange, a network of free, community-driven Q&A sites

The guy you see to the left. Electrical/electronics engineering student mostly doing embedded development. Linux user since '05.

You might want to check what I am up to on my blog (in Portuguese mostly), my Twitter or my GitHub, or my skills are available on LinkedIn. Alternatively, if you want to see what I'm listening to, check my last.fm or Spotify profiles.

If you have any doubt/problem about my questions/answers, comment on them.

I will always try to comment why did I downvote, and will remove those downvotes if questions/answers are subsequently improved.


Mar
20
comment How to delete the whole root with rm rf and shred together?
@user_parser it erases everything at the hard disk level (basically you're writing garbage to the partition), so everything will be gone. No need for any parameters like force or recursive.
Feb
27
comment getting ? in permissions when running ll/ls command
I've seen similar problems with a corrupted file system and a physically damaged hard disk. Try running fsck on the device.
Feb
3
comment vi shows as vim
Arch Linux has this vi by default.
Jan
31
comment Ethernet only works when PC booted with cable plugged in
@psusi the router works for wireless; also, as I said, when I boot up the PC with the Ethernet cable in, it works normally. I will play with wireshark to see what comes out.
Jan
31
comment Ethernet only works when PC booted with cable plugged in
@psusi None of them work: the DHCP request just keeps timing out and setting an IP address manually gives "Network is unreachable" even when pinging my router.
Oct
20
comment Reading Smart Card
What happens if you use a terminal-emulator (e.g. minicom, picocom) to send/receive information from the smart card?
Sep
19
comment Running proprietary firmware in virtualized environment, but not in host environment
I think you could do something with PCI passthrough, but then the wireless card will only be visible to the virtual environment.
Sep
14
comment Software for image files analysis
You probably will need to roll your own, it should be quite easy e.g. with Python + scipy/scikit-image or with Octave.
Aug
31
comment Installing FreeBSD in VirtualBox aborts unexpectedly
Try going to the virtual machine's settings and enable PAE/NX. I was able to put together a install without problems and without using the command given in the errata.
Aug
27
comment Two questions about Linux
@user82125 Debian would work well on this; it would be better if you could add more RAM.
Aug
27
comment Two questions about Linux
The computer's specification would help.
Aug
22
comment Could not open X display after hostname change
Try adding 127.0.0.1 [your hostname] to /etc/hosts.
Aug
21
comment Swap appears to not be in use
@NoTime look at any lines that have a 'FAILED'/'FAILING_NOW'.
Aug
21
comment Swap appears to not be in use
From your dmesg it seems that the hard drive is failing, then the system remounts it as read-only. Can you install smartmontools and then run smartctl -a /dev/sda?
Aug
21
comment simulate the read only environment without the users realizing it in VirtualBox
@NoTime I tried here and this syntax worked.
Aug
21
comment File command database and identifying text files
@user2543622 You can download file's source code and within there you will find the sources of the magic file.
Aug
18
comment virtualbox keeps showing error “Kernel driver not installed”
Does you distro provide prebuilt packages for the VirtualBox modules (if so, use those)? What happens if you modprobe vboxdrv manually?
Jul
27
comment Is GRUB the best bootloading solution? Is there an easier alternative?
I remember using LILO around 2010 or 2011 on a then-current Core 2 Duo. I guess it should still work (disconsidering UEFI etc..), the PC architecture has not changed that much.
Jul
8
comment How can I administer a server if USB disabled?
Why do you want to disable the USB? The performance gain will be small (if it happens at all), you will save at most a few MB RAM.
Jun
24
comment Can't install inkscape on Ubuntu?
What happens if you type which inkscape? Do you see it in the Applications menu?