Tag: linux
Sabayon Linux – Noob’s Guide
What is Sabayon?
Patching:
equo update; equo upgrade
It’s pretty close to apt-get in syntax. (Notes are here)
The Xen Adventure
Learning xen.
Compiled from http://wiki.xenproject.org/wiki/Xen_Beginners_Guide#Enable_virtualization_support_in_BIOS
Things to install
apt-get -y install htop
Create a bridge for the virtual machines:
brctl addbr vlan0
brctl addif vlan0 wlan0
iw dev wlan0 set 4addr on (for wireless card)
proftpd – setting up a quick ftp server
This was created off of:
yum -y install proftpd.x86_64
echo “/bin/false” >> /etc/shells
cd /home sudo mkdir FTP-shared
sudo useradd userftp -p your_password -d /home/FTP-shared -s /bin/false sudo passwd userftp
cd /home/FTP-shared/ sudo mkdir download sudo mkdir upload
cd /home sudo chmod 755 FTP-shared cd FTP-shared sudo chmod 755 download sudo chmod 777 upload
cp /etc/proftpd.conf /etc/proftpd.conf.orig
vi /etc/proftpd.conf
-
# To really apply changes reload proftpd after modifications. AllowOverwrite on AuthAliasOnly on # Choose here the user alias you want !!!! UserAlias sauron userftp ServerName "ChezFrodon" ServerType standalone DeferWelcome on MultilineRFC2228 on DefaultServer on ShowSymlinks off TimeoutNoTransfer 600 TimeoutStalled 100 TimeoutIdle 2200 DisplayChdir .message ListOptions "-l" RequireValidShell off TimeoutLogin 20 RootLogin off # It's better for debug to create log files ;-) ExtendedLog /var/log/ftp.log TransferLog /var/log/xferlog SystemLog /var/log/syslog.log #DenyFilter \*.*/ # I don't choose to use /etc/ftpusers file (set inside the users you want to ban, not useful for me) UseFtpUsers off # Allow to restart a download AllowStoreRestart on # Port 21 is the standard FTP port, so you may prefer to use another port for security reasons (choose here the port you want) Port 1980 # To prevent DoS attacks, set the maximum number of child processes # to 30. If you need to allow more than 30 concurrent connections # at once, simply increase this value. Note that this ONLY works # in standalone mode, in inetd mode you should use an inetd server # that allows you to limit maximum number of processes per service # (such as xinetd) MaxInstances 8 # Set the user and group that the server normally runs at. User nobody Group nobody # Umask 022 is a good standard umask to prevent new files and dirs # (second parm) from being group and world writable. Umask 022 022 PersistentPasswd off MaxClients 8 MaxClientsPerHost 8 MaxClientsPerUser 8 MaxHostsPerUser 8 # Display a message after a successful login AccessGrantMsg "welcome !!!" # This message is displayed for each access good or not ServerIdent on "you're at home" # Lock all the users in home directory, ***** really important ***** DefaultRoot ~ MaxLoginAttempts 5 #VALID LOGINS <Limit LOGIN> AllowUser userftp DenyALL </Limit> <Directory /home/FTP-shared> Umask 022 022 AllowOverwrite off <Limit MKD STOR DELE XMKD RNRF RNTO RMD XRMD> DenyAll </Limit> </Directory> <Directory /home/FTP-shared/download/*> Umask 022 022 AllowOverwrite off <Limit MKD STOR DELE XMKD RNEF RNTO RMD XRMD> DenyAll </Limit> </Directory> <Directory /home/FTP-shared/upload/> Umask 022 022 AllowOverwrite on <Limit READ RMD DELE> DenyAll </Limit> <Limit STOR CWD MKD> AllowAll </Limit> </Directory>
You can do a syntax check with the following:
proftpd -td5
Linux Wifi Debugging
inxi -Fx
rfkill list
iwconfig
lsmod
BeagleBone Black notes
So I finally got the BBB to see the micro sd card through angstrom. The issue is the way the bootloader is setup to boot form microsd when there is one. So you have to create a uEnv.txt file on a “/boot” partition on the microsd card. This file will tell the system to boot off eMMC.
mkcard.sh
If you are using an sdxc card, you’ll want to install the following .deb on linux.
http://blog.drastudios.com/2013/04/add-exfat-support-to-ubuntu.html
Reference for this: http://dev.gentoo.org/~armin76/arm/beagleboneblack/install_emmc.xml
http://learn.adafruit.com/beaglebone-black-installing-operating-systems/ubuntu
–> tips on configuring angstrom
http://www.gigamegablog.com/2012/01/29/beaglebone-linux-101-configuring-angstrom-linux/
So I decided to install Ubuntu, as I’m more familiar with it. I pulled an eMMC image from the following url:
http://rcn-ee.net/deb/flasher/raring/
The Drivers
Well tried to install the drivers under windows 8, and got a flat “failed” on all fronts.
Patching Angstrom
Well did an “opkg update; opkg upgrade”, and it went for a log time before it filled up its file system.
http://learn.adafruit.com/beaglebone-black-installing-operating-systems/angstrom
http://beagleboard.org/latest-images/
https://code.google.com/p/beagleboard/wiki/HowToGetAngstromRunning
CA Cert Setup for a Linux Host
Here’s how it’s done. I’ll be using my machine as an example. (minion.digitalw00t.com)
Create the csr:
openssl req -newkey rsa:2048 -subj /CN=minion.digitalw00t.com -nodes -keyout minion.digitalw00t.key -out minion.digitalw00t.csr
casert request a new server cert, copy/paste the contents of minion.digitalw00t.csr into the page and submit.
Setting up your owncloud system
I’m going to do this under ubuntu, but you can use any flavor of linux really.
OWNCLOUD_DIR="/opt/md2/owncloud" apt-get -y install apache2 php5 php5-gd php-xml-parser php5-intl \ php5-sqlite php5-mysql smbclient curl libcurl3 php5-curl \ apache2 mysql-server libapache2-mod-php5 \ php5-gd php5-json php5-mysql php5-curl \ php5-intl php5-mcrypt php5-imagick mkdir -p ${OWNCLOUD_DIR} cd ${OWNCLOUD_DIR} wget "http://download.owncloud.org/community/owncloud-5.0.15.tar.bz2" tar -xjf ${OWNCLOUD_DIR}/owncloud-5.0.15.tar.bz2 mv owncloud/* ${OWNCLOUD_DIR} mv owncloud/.htaccess ${OWNCLOUD_DIR} mkdir -p ${OWNCLOUD_DIR}/data chown -R www-data:www-data ${OWNCLOUD_DIR}/data chown -R www-data:www-data ${OWNCLOUD_DIR}/apps chown -R www-data:www-data ${OWNCLOUD_DIR}/config
Add the following applications:
apt-get install davfs2
echo ‘“https://your-owncloud-server-url.com/owncloud/remote.php/webdav” yourUserName “your password here”‘ >> /etc/davfs2/secrets
mkdir /media/owncloud
chown localUserId:localUserId /media/owncloud
echo ‘https://your-owncloud-server-url.com/owncloud/remote.php/webdav/ /media/owncloud davfs defaults,user,noauto,uid=1000,gid=1000 0 0′ >> /etc/fstab
References:
- http://doc.owncloud.org/server/5.0/developer_manual/app/gettingstarted.html
- WebDAV: http://doc.owncloud.org/server/5.0/admin_manual/installation.html
- Setting up WebDAV: http://www.adercon.com/ac/node/100
- http://forum.owncloud.org/viewtopic.php?f=17&t=7536 (Great for webdav debugging)
Wiping a disk with dd
http://www.noah.org/wiki/Dd_-_Destroyer_of_Disks
parted
parted -a opt /dev/md0
(parted) u MiB
(parted) rm 1
(parted) mkpart primary 1 100%
or an alternate dirty method would simply go like this
(parted) mkpart primary ext4 1 -1
Partition a 4tb external drive:
parted -a opt /dev/sdc
mklabel gpt
unit TB
mkpart primary 0.00TB 4.00TB
align-check optimal 1 (check if the partition is aligned)
quit
mkfs.ext4 /dev/sdc1
You might want to reduce the reserved for defragmentation to 1% with such a large drive.
tune2fs -m 1 /dev/sdc1