# apt-get install scponlySince, we will not be chrooting users, suid binary is not required. So, select no to: Install the chrooted binary /usr/sbin/scponlyc SUID root? <-- No For existing users, do:
# usermod -s /usr/bin/scponly usernameTo create a new user with scponly:
# useradd -m -s /usr/bin/scponly username # passwd username
wget https://raw.github.com/aatishnn/lempstack/master/lemp-debian.sh chmod +x lemp-debian.sh ./lemp-debian.shThis script works for me but I cannot guarantee that it will work for you too. I am not a Bash expert. Please add some regexp to your brain to ignore my scripting laziness. This is designed to work with Debian and Ubuntu. You may freely use it to suit your needs under the condition that you will thank me. I would be glad if you can share something about this script, test it, debug it or just scold, rebuke or criticize.
SSID: linuxdo Passphrase: myphraseAnd, `wlan0` is the wireless interface. Find the one corresponding in your system using `iwconfig`.
# yum install wpa_supplicant
# apt-get update && apt-get install wpa_supplicantNow, we need to create the configuration file for `wpa_supplicant`. There is an easy way out using:
# wpa_passphrase linuxdo myphrase >/root/linuxdo.confIt's the time to connect now. Run `wpa_supplicant` as:
# wpa_supplicant -iwlan0 -c/root/linuxdo.confAfter you get `CTRL-EVENT-CONNECTED`, you should run `dhclient` as:
# dhclient wlan0This way, you will get a dynamic IP from the router.
# yum groupinstall 'Development Tools' # yum install readline-devel zlib zlib-devel openssl openssl-devel libyaml git python-setuptoolsPygments is not necessary as it uses pygments.rb. (Thanks to @octopress)# easy_install Pygments
$ wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.2-p320.zip $ unzip ruby-1.9.2-p320.zip $ cd ruby-1.9.2-p320 $ ./configure --prefix=/usr --with-openssl-include=/usr/include/openssl --with-openssl-lib=/usr/lib64/openssl/engines --disable-option-checking --disable-pthread $ makeIf you are using 32-bit, then replace '--with-openssl-lib=/usr/lib64/openssl/engines' to '--with-openssl-lib=/usr/lib/openssl/engines'.
# make installAgain, run these as normal user:
$ git clone git://github.com/imathis/octopress.git octopress $ cd octopressNow, as root:
# gem install bundler # bundle install # rake installLastly, as normal user:
$ rake installNow, follow Configuring Octopress. That's it. You have installed Octopress on your system. Leak: I will soon be moving this blog to Octopress and will be hosting it on GAE.
<match target="font">
<edit name="autohint" mode="assign">
<bool>true</bool>
</edit>
<edit name="hinting" mode="assign">
<bool>true</bool>
</edit>
<edit mode="assign" name="hintstyle">
<const>hintslight</const>
</edit>
</match>
Now, restart Chrome to see the changes.
rpm -ivh <package-name>.rpmAnd, add the plugin to Firefox with:
# cd /usr/lib64/mozilla/plugins # ln -s $(find / -mount -name libnpjp2.so)If 'ln -s $(find / -mount -name libnpjp2.so)' fails, then, first find the file 'libnpjp2.so' and supply the path as:
# ln -s <path-to-libnpjp2.so>
# yum install gcc make openssl-devel git # mkdir ~/downloads # cd downloads # wget "http://nodejs.org/dist/v0.6.11/node-v0.6.11.tar.gz" # tar -xzvf node-v0.6.11.tar.gz # cd node-v0.6.11/ # ./configureIf it complains about missing libraries or anything else and doesn't succeeds, install the required libraries using Yum.
# make # make install # ln -s /usr/local/bin/node /usr/local/bin/nodejs # wget http://npmjs.org/install.sh # chmod +x install.sh # ./install.sh # PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin # rm -f /usr/bin/npm # ln -s /usr/local/bin/npm /usr/bin/npm # useradd -d /home/logio logio # usermod -G adm logio # npm config set unsafe-perm true # npm install -g --prefix=/usr/local git://github.com/NarrativeScience/Log.io.git # chmod -R 777 /var/log/log.io/
# log.io server start
# iptables -A INPUT -p tcp --dport 8993 -j ACCEPT
# log.io harvester startTested on CentOS 6.
# cd /tmp # wget http://www.skype.com/go/getskype-linux-beta-static # cd /opt # tar jxf /tmp/skype_static-2.2.0.99.tar.bz2 # rm /tmp/skype_static-2.2.0.99.tar.bz2 # ln -s skype_staticQT-2.2.0.99 skypeTo make it easy to launch Skype and remove shared library related errors, do this:
# ln -s /opt/skype /usr/share/skype # ln -s /opt/skype/skype /usr/bin/skype # ln -s /usr/lib/libtiff.so.3 /usr/lib/libtiff.so.4Even if you are running 64 bit CentOS version, you should install some 32 bit libraries as:
# yum install glibc.i686 alsa-lib.i686 libXv.i686 libXScrnSaver.i686 libSM.i686 libXi.i686 libXrender.i686 libXrandr.i686 freetype.i686 fontconfig.i686 zlib.i686 glib2.i686 libstdc++.i686 libtiff.i686 qt.i686 qt-x11.i686 pulseaudio-libs.i686 pulseaudio-libs-glib2.i686 alsa-plugins-pulseaudio.i686And, if you have CentOS media available:
# yum --disablerepo=\* --enablerepo=c6-media install glibc.i686 alsa-lib.i686 libXv.i686 libXScrnSaver.i686 libSM.i686 libXi.i686 libXrender.i686 libXrandr.i686 freetype.i686 fontconfig.i686 zlib.i686 glib2.i686 libstdc++.i686 libtiff.i686 qt.i686 qt-x11.i686 pulseaudio-libs.i686 pulseaudio-libs-glib2.i686 alsa-plugins-pulseaudio.i686
# skypeTested on CentOS 6.2
# yum install yum-prestoNow, try updating your system as:
# yum updateYou will see that the download size will reduce dramatically and updates will be faster. That's how Delta RPM works.
AllowUsers root alice bob
PermitRootLogin yesChange:
PermitRootLogin without-password
# rpm -ivh http://linuxdownload.adobe.com/linux/i386/adobe-release-i386-1.0-1.noarch.rpm # yum remove flash-plugin # yum --disablerepo=adobe-linux-x86_64 --enablerepo=adobe-linux-i386 install flash-pluginIf you have a running Firefox window, restart it and you will get your flash plugin back. Tested on CentOS 6.2.
(firefox:4486): Gtk-WARNING **: Unable to locate theme engine in module_path: "clearlooks"Install package 'gtk2-engines.i686'.
[main] cachedir=/var/cache/yum/$basearch/$releasever keepcache=1 debuglevel=2 logfile=/var/log/yum.log exactarch=1 obsoletes=1 gpgcheck=1 plugins=1 ... ...So, all the downloaded data will reside in 'cachedir' location.
rpm -ivh http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm32-bit:
rpm -ivh http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpmNow, install VLC as:
yum install vlcHurrah! You have a working best media player.
yum install package_name.rpmIf you are getting errors like "Package is not signed", do this:
yum --nogpgcheck install package_name.rpm
# yum provides system-config-network Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: centos.vr-zone.com * extras: centos.vr-zone.com * updates: centosz4.centos.org Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try againThis problem can be fixed by uncommenting 'baseurl' in repository configuration file. For example: File:CentOS-Base.repo Original:
[base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 .. .. ..Change to:
[base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 .. .. ..If this doesn't solve the problem, then it is something to do with network connection.
# find / -name 'ra0' /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/net/ra0Now, I will add this to rt3070sta.modules:
#!/bin/sh
if [ ! -c /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/net/ra0 ] ; then
exec /sbin/modprobe rt3070sta >/dev/null 2>&1
fi
bash: cd: localdisk: Input/output errorI found that 'localdisk' was a file and not a directory. I wonder why 'mount' was accepting file as mount point.
wget http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/RPMS/fuse-ntfs-3g-2010.10.2-1.el6.rf.x86_64.rpm rpm -ivh fuse-ntfs-3g-2010.10.2-1.el6.rf.x86_64.rpmNow, NTFS partitions can be mounted using 'mount'. For example:
mount -t ntfs-3g /dev/disk/by-label/blahblahblah /windows/e
vi /etc/yum.repos.d/CentOS-Media.repoModify the line containing baseurl to suit your environment i.e. the mount point. Also, note the repository name. For CentOS 6.2, it is 'c6-media'. Make sure 'enabled' is set to 1. Save the file using [escape]:x Now, run any yum command like:
yum --enablerepo=c6-media --disablerepo=\* install gccYum priorities can also be used to give more priority to local installation media.
uname -r/proc/version also provides details about kernel version. Cat it using:
cat /proc/version
# ./mysql_backup.sh -bash: ./mysql_backup.sh: /bin/bash^M: bad interpreter: No such file or directoryYou can solve this error by using "dos2unix" as:
# dos2unix mysql_backup.sh
du <directory_name>A more human-readable format can be generated using -h switch which outputs size with M,G and similar postfix.
du -h <directory_name>
# ps -A|grep ddThen, do this:
# kill -USR1 <pid>Now, see the terminal where 'dd' is running. You would get some details about the transfer progress. If you are really impatient, you can run this command every 20 seconds with 'watch':
watch -n 20 kill -USR1 <pid>
# zypper in syslinux # isohybrid openSUSE-12.1-DVD-x86_64.isoNow, use SUSE Studio ImageWriter to write this ISO or dd to your usb drive.
apt-get install acpiYou must be root to do that. Use 'sudo' for Ubuntu/Mint systems. Now, type 'acpi' to see battery status. I got this with a fully charged battery:
# acpi Battery 0: Full, 100%, rate information unavailable
# for user in $(cut -f1 -d: /etc/passwd); do crontab -u $user -l; doneThis is meant to be run as root.
Options Indexes FollowSymLinks MultiViewsRemove "Indexes" from that line so that it looks like:
Options FollowSymLinks MultiViews
OpenShift is Red Hat's Cloud Computing Platform as a Service (PaaS) offering. OpenShift is an application platform in the cloud where application developers and teams can build, test, deploy, and run their applications. OpenShift takes care of all the infrastructure, middleware, and management and allows the developer to focus on what they do best: designing and coding applications.
# apt-get install ruby rubygems rhcIf 'rhc' is unavailable, do this:
# gem install json_pure # gem install rhc
# wget -O openshift.repo https://openshift.redhat.com/app/repo/openshift.repo # mv openshift.repo /etc/yum.repos.d/ # yum install rhc # rm -f openshift.repo
# rhc domain create -nThis domain is a third level domain. Any new application will inherit this domain name. Use the email address you used to sign up with OpenShift.-l <emailaddress>
# rhc app create -a wordpress -t php-5.3Add MySQL Cartridge and PhpMyAdmin to application:
# rhc app cartridge add -a wordpress -c mysql-5.1 # rhc-ctl-app -e add-phpmyadmin-3.4 -a wordpressYou can now access PhpMyAdmin from http://wordpress-<domain>.rhcloud.com/phpmyadmin Note the username, password and host details.
# cd wordpress/php # wget -O latest.tar.gz http://wordpress.org/latest.tar.gz # tar -xf latest.tar.gz # rm -f latest.tar.gz # cd wordpress # mv * ../ # cd .. # git add . # git commit -m "Initial Push"Now, if you head over to http://wordpress-<domain>.rhcloud.com, you should see Wordpress complaining about 'wp-config.php'. Now, all you have to do is to modify 'wp-config' and add MySQL details from preceding cartridge command. Then,
# git commit -a -m "Edited wp-config.php"Use your own domain name: To use your own domain name (assuming www.example.com),
# rhc-ctl-app -c add-alias --alias www.example.com -a wordpressTo get this domain working, add a CNAME record for www.example.com to wordpress-<domain>.rhcloud.com . DNS propagation may take some time. Key to win is patience.
The OPENSHIFT_DATA_DIR and OPENSHIFT_TMP_DIR are designed as file system locations for data written/read by the application.So, to preserve uploads, here is a workaround by adding following lines to wordpress/.openshift/action_hooks/build:
if [ ! -d $OPENSHIFT_DATA_DIR/uploads ]; then mkdir $OPENSHIFT_DATA_DIR/uploads fi ln -sf $OPENSHIFT_DATA_DIR/uploads $OPENSHIFT_REPO_DIR/php/wp-content/This creates a symbolic link to Wordpress 'wp-content' directory. It's done. You are now blogging on Cloud. Pick up some words and let it flow around in your blog.
lsof -i :<port>For example, to view HTTPS bindings,
lsof -i :443
# wget http://dl.dropbox.com/u/44794654/bench.sh -O - -o /dev/null|bash System uptime : 15 min, Download speed from CacheFly: 11.0MB/s Download speed from Linode, Atlanta GA: 11.24MB/s Download speed from Linode, Dallas, TX: 16.0MB/s Download speed from Linode, Tokyo, JP: 6.11MB/s Download speed from Linode, London, UK: 9.16MB/s Download speed from Leaseweb, Haarlem, NL: 8.37MB/sDisk IO Tests
# dd if=/dev/zero of=test bs=16k count=64k conv=fdatasync;rm -f test 65536+0 records in 65536+0 records out 1073741824 bytes (1.1 GB) copied, 17.7806 s, 60.4 MB/sDisk IO Latency Test
# wget http://ioping.googlecode.com/files/ioping-0.6.tar.gz # tar xvf ioping-0.6.tar.gz # cd ioping-0.6/ # make # ./ioping . 4096 bytes from . (ext3 /dev/root): request=1 time=21.6 ms 4096 bytes from . (ext3 /dev/root): request=2 time=15.0 ms 4096 bytes from . (ext3 /dev/root): request=3 time=17.5 ms 4096 bytes from . (ext3 /dev/root): request=4 time=32.7 ms 4096 bytes from . (ext3 /dev/root): request=5 time=3.4 ms 4096 bytes from . (ext3 /dev/root): request=6 time=12.9 ms 4096 bytes from . (ext3 /dev/root): request=7 time=47.6 ms 4096 bytes from . (ext3 /dev/root): request=8 time=67.3 ms 4096 bytes from . (ext3 /dev/root): request=9 time=21.5 ms 4096 bytes from . (ext3 /dev/root): request=10 time=1.0 ms 4096 bytes from . (ext3 /dev/root): request=11 time=11.4 ms 4096 bytes from . (ext3 /dev/root): request=12 time=25.1 ms 4096 bytes from . (ext3 /dev/root): request=13 time=32.7 ms 4096 bytes from . (ext3 /dev/root): request=14 time=9.3 ms 4096 bytes from . (ext3 /dev/root): request=15 time=14.0 ms 4096 bytes from . (ext3 /dev/root): request=16 time=20.7 ms 4096 bytes from . (ext3 /dev/root): request=17 time=0.7 ms --- . (ext3 /dev/root) ioping statistics --- 17 requests completed in 17096.6 ms, 48 iops, 0.2 mb/s min/avg/max/mdev = 0.7/20.8/67.3/16.5 msLinks: