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How to check for file existence [duplicate]
...rry chris you are wrong true and false => false ` >> File.file?('/etc/passwd') => true >> File.file?('/etc/') => false >> File.exists?('/etc/') => true >> File.exists?('/etc/passwd') => true >> File.file?('/etc/passwd') and File.exists?('/etc/passwd')`
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...配置IP地址，关闭防火墙，selinux 关闭NetworkManager，修改/etc/hosts,配置YUM (三台机器都需要操作)
2.2.1安装操作系统
省略
2.2.2配置IP地址
省略
由于我是虚拟机环境中测试，share2和share3均是直接克隆而来
克隆之后得到的机...
Remove redundant paths from $PATH variable
...on, if you want to change permanently add it to any .bashrc, bash.bashrc, /etc/profile - whatever fits your system and user needs.
Note: This is for Linux. We'll make this clear for new coders. (` , ') Don't try to SET = these.
...
iReport not starting using JRE 8
... Extract the iReport and in the extracted folder that contains the bin and etc folders throw in the jre. For example if you unpack twice the jre-7u67-windows-x64.tar.gz you end up with a folder named jre1.7.0_67. Put that folder in the iReport-5.6.0 directory:
and then go into the etc folder and ...
How to see log files in MySQL?
...yslog).
To Enable them just follow below steps:
step1: Go to this file (/etc/mysql/conf.d/mysqld_safe_syslog.cnf) and remove or comment those line.
step2: Go to mysql conf file (/etc/mysql/my.cnf) and add following lines
To enable error log add following
[mysqld_safe]
log_error=/var/log/mysql/...
Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...完毕。
配置系统
配置 网卡 BOND
1、编辑 /etc/hosts 文件
节点1 节点 2 温备节点全部一样
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6...
Difference between BeautifulSoup and Scrapy crawler?
...an specify constraints on how many (number of) URLs you want to crawl and fetch,etc. It is a complete framework for web-scraping or crawling.
While
BeautifulSoup is a parsing library which also does a pretty good job of fetching contents from URL and allows you to parse certain parts of them witho...
Apache shows PHP code instead of executing it
...able php! Check the folder mods-enabled in the Apache directory (default: /etc/apache2/) to see if you find a file named php. I don't remember the extension but I think it's .so.
Also check in /var/log/apache2/error.log to see if you have any other errors.
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How can I tell where mongoDB is storing data? (its not in the default /data/db!)
...
@user2384994 mine was located at /etc/mongod.conf
– basickarl
Mar 28 '15 at 2:44
1
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Node.js + Nginx - What now?
... is what I have done in my Ubuntu box:
Create the file yourdomain.com at /etc/nginx/sites-available/:
vim /etc/nginx/sites-available/yourdomain.com
In it you should have something like:
# the IP(s) on which your node server is running. I chose port 3000.
upstream app_yourdomain {
server 12...