CentOS Recipes

Learn-Linux site

20181028-Install-R-RstudioServer-Git-In-CentOS7.nb.html

20181028-Use_VIM_in_CentOS7.nb.html

20181028-YUM-Install-Software-In-CentOS.nb.html

20181029-Linux_Basics_Questions.nb.html

20181101-mailR_Package_Send_Mail.nb.html

20181103-Basic_Linux_Commands_You_Must_Know.nb.html

20181103-Configure_YUM_Repository_And_EPEL_Repository_In_CentOS7.nb.html

罗辑思维记录

About me

我就是我，我懂我爱我。 思考-行动，勤奋-专业 https://github.com/xiangxing98 http://www.worldhello.net/gotgithub/ 2015-06-15 kindle paperwhites, thanks jd.com 2015-06 GITHUB+R+VBA 2015-05 DSS+GIT+GITHUB+R 2015-04 JHU DS +ggplot2 + R 2015-03 Getting and Cleaning Data-Coursera 2015-03 在读古典的《拆掉思维里的墙》 2015-02 罗辑思维：过往不念，当下不杂，未来不惧。 2015 MOOC+Coursera+慕课+网易云课堂study.163.com+果壳慕课学院 http://www.douban.com/people/xiangxing98/ find ebook

Add Linux

http://www.sublimetext.com/3

http://linux.vbird.org/

http://vbird.dic.ksu.edu.tw/

Install 在XP下用U盘安装Ubuntukylin到硬盘的方法（双系统共存）

http://blog.sina.com.cn/s/blog_6b5f0c070101j4hm.html

Add CentOS site

http://www.centoscn.com/

http://www.iplaysoft.com

• aliyun_mirrors_centos

• 163_mirrors_centos

…or create a new repository on the command line

echo "# learn-centos" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/xiangxing98/learn-centos.git
git push -u origin master

#SSH
echo "# learn-centos" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin [email protected]:xiangxing98/learn-centos.git
git push -u origin master

…or push an existing repository from the command line

git remote add origin https://github.com/xiangxing98/learn-centos.git
git push -u origin master

#SSH
git remote add origin [email protected]:xiangxing98/learn-centos.git
git push -u origin master

Repository for learning linux in general and CentOS specifics. This repository contains basically a whole bunch of small recipes :)

• How do I install Poppler PDF Utilities?
• How do I get OS version?
• How do I know how many cores my system has?
• How do I install MySql?
• How do I install Node.js?
• How do I install Git?
• How to allow specific user run command as sudo without password?
• How do I install nginx?

How do I install Poppler PDF Utilities?

Just run sudo yum install poppler-utils.x86_64. This will allow you to use to following commands:

pdfdetach    pdffonts     pdfimages    pdfinfo      pdfroff
pdfseparate  pdftocairo   pdftohtml    pdftoppm     pdftops
pdftotext    pdfunite

How do I get OS version?

You should run cat /etc/centos-release

How do I know how many cores my system has?

Run the command cat /proc/cpuinfo to list details for all cores, and run grep 'model name' /proc/cpuinfo | wc -l to know how many cores your system has.

How do I install MySql?

sudo yum upgrade -y
sudo yum install mysql -y
sudo yum install mysql-server -y
sudo /etc/init.d/mysqld start
mysqladmin -u root password 'rootPassword'
sudo chkconfig mysqld on

# my.cnf should be located at; /etc/my.cnf
# add the following line to allow external connections;
# bind-address = 0.0.0.0
# then restart mysql to reload configurations;
# sudo /etc/init.d/mysqld restart

You will be required to grant remote access to any user you would like to be able to connect from outside localhost.

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'rootPassword';
FLUSH PRIVILEGES;

This is a per database permission so don't forget to use wildcards or specify specific databases.

How do I install Node.js?

curl https://raw.githubusercontent.com/creationix/nvm/v0.13.1/install.sh | bash
source ~/.bashrc
nvm install 0.10
nvm use 0.10
sudo visudo # add `dirname $(which node)` to secure_path so you're able to `sudo node` and `sudo npm`

How do I install Git?

Simply run sudo yum install -y git

How to allow specific user run command as sudo without password?

Log in as root then run sudo visudo and add the following line joe ALL=(ALL) NOPASSWD: /full/path/to/command, or if you want to restrict wich arguments this user may pass you can change that line to joe ALL=(ALL) NOPASSWD: /full/path/to/command ARG1 ARG2.

How do I install nginx?

To install nginx you must run these commands:

sudo yum install epel-release
sudo yum install nginx

To start the services run sudo /etc/init.d/nginx start

learn-centos

git clone [email protected]:xiangxing98/learn-centos.git learn-centos
git add .
git commit -m "comment here about what your have done"
git push -u origin master

Thanks renatoargh/centos