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@ variables in Ruby on Rails
...silent dup of variable, or making it 'const' so that it can't be modified, etc)? I'm coming from a C/C++ & Java perspective, and the really vague and optional syntax is driving me nuts!
– Dan Devine
Jun 13 '18 at 18:05
...
Node.js: what is ENOSPC error and how to solve?
...d to avoid ENOSPC:
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
For Arch Linux add this line to /etc/sysctl.d/99-sysctl.conf:
fs.inotify.max_user_watches=524288
Then execute:
sysctl --system
This will also persist across reboots.
Technic...
How do I extract the contents of an rpm?
... the example below:
$ rpm2cpio php-5.1.4-1.esp1.x86_64.rpm | cpio -idmv
/etc/httpd/conf.d/php.conf
./etc/php.d
./etc/php.ini
./usr/bin/php
./usr/bin/php-cgi
etc
share
|
improve this an...
Open file via SSH and Sudo with Emacs
...name shorthand defined in an .ssh/config file. When I type /sudo:hostname:/etc/hosts, I get what you would expect, but when I type /sudo:abbrev:/etc/hosts, I get the message "Host abbrev looks like a remote host, sudo can only use the local host". Is this fixable?
– rogerl
...
What do the numbers in a version typically represent (i.e. v1.9.0.1)?
...0.1:
1: Major revision (new UI, lots of new features, conceptual change, etc.)
9: Minor revision (maybe a change to a search box, 1 feature added, collection of bug fixes)
0: Bug fix release
1: Build number (if used)—that's why you see the .NET framework using something like 2.0.4.2709
You won...
Localization and internationalization, what's the difference?
...gs to resource files, enabling the use of date, time and currency formats, etc.
When you wish to sell, for example, a Chinese version of your app, you'd then localize it by hiring a translator to build the zh-CN resource files, and use a new date/time/currency format.
...
Why does sudo change the PATH?
...d binary folders in
the PATH. Having already added my
requirements to /etc/environment I was
surprised when I got errors about
missing commands when running them
under sudo.....
I tried the following to fix this
without sucess:
Using the "sudo -E" option - did not work. My ...
CentOS+Nginx+PHP+MySQL详细配置(图解) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...t password 123456 //设置MySQL密码
#cp support-files/my-medium.cnf /etc/my.cnf
#echo "/usr/local/mysql/bin/mysqld_safe &" >>/etc/rc.local
二、安装PCRE
PCRE是perl所用到的正则表达式，目的是让所装的软件支持正则表达式。默认情况下，Nginx只处...
Map vs Object in JavaScript
...n mentioned here (using any object as a key, separation of keys and props, etc.), but FWIW in some cases iteration order of plain object properties is defined by ES2015. See stackoverflow.com/a/32149345.
– JMM
Oct 9 '15 at 19:59
...
How to retrieve absolute path given relative
...e readlink -e in tandem with dirname.
$(dirname $(readlink -e ../../../../etc/passwd))
yields
/etc/
And then you use dirname's sister, basename to just get
the filename
$(basename ../../../../../passwd)
yields
passwd
Put it all together..
F=../../../../../etc/passwd
echo "$(dirname $(r...