env | 易学教程

rails 3, how use an ENV config vars in a Settings.yml file?

阅读更多关于 rails 3, how use an ENV config vars in a Settings.yml file?

In my settings.yml file I have several config vars, some of which reference ENV[] variables. for example I have ENV['FOOVAR'] equals WIDGET I thought I could reference ENV vars inside <% %> like this: Settings.yml: default: cv1: Foo cv2: <% ENV['FOOVAR'] %> in rails console if I type > ENV['FOOVAR'] => WIDGET but > Settings.cv1 => Foo (works okay) > Settings.cv2 =>nil (doesn't work???) use following:- default: cv1: Foo cv2: <%= ENV['FOOVAR'] %> arpiagar The above solution did not work for me. However, I found the solution on How do I use variables in a YAML file? My .yml file contained

env: python\\r: No such file or directory

阅读更多关于 env: python\\r: No such file or directory

My Python script beak contains the following shebang: #!/usr/bin/env python When I run the script $ ./beak , I get env: python\r: No such file or directory I previously pulled this script from a repository. What could be the reason for this? falsetru The script contains CR characters. The shell interprets these CR characters as arguments. Solution: Remove the CR characters from the script using the following script. with open('beak', 'rb+') as f: content = f.read() f.seek(0) f.write(content.replace(b'\r', b'')) f.truncate() Open the file in vim or vi, and administer the following command: :set

How to get environment of a variable in R

阅读更多关于 How to get environment of a variable in R

问题 I was wondering if there is anyway to get the environment of a declared variable. Say I already have declared a variable to an environment and want to use that variable's environment to declare a few more variables. Something like getEnv("variable") 回答1: Refer to: http://adv-r.had.co.nz/Environments.html#env-basics library(pryr) x <- 5 where("x") #> <environment: R_GlobalEnv> where("mean") #> <environment: base> The where function is described in the above website. It only finds the first

Installing Gems without rvm, as root, with explicit version of ruby

阅读更多关于 Installing Gems without rvm, as root, with explicit version of ruby

I've decided to get rid of rvm, and I'm having trouble compiling a gem with my new version of ruby 1.9.2. The gem requires 1.9.2, I have it, yet says it can't install without, so the error messages makes no sense. How can I explicitly tell the gem to compile with said version of ruby? Gem::InstallError: linecache19 requires Ruby version >= 1.9.2. An error occured while installing linecache19 (0.5.12), and Bundler cannot continue. Make sure that `gem install linecache19 -v '0.5.12'` succeeds before bundling. apps2 ~/projects/sms/apps2/apps2_admin $ ruby -v ruby 1.9.2p180 (2011-02-18 revision

Laravel 5 - env local debug true no errors shown

阅读更多关于 Laravel 5 - env local debug true no errors shown

I'm trying to enable the debug for my app but it looks like I don't have any feedback. The environment is set to local (in the .env file) and if I run php artisan env I get this Current application environment: local The debug config for my local env is set to true return [ 'debug' => true, Also if I set in my main config file (app.php inside the config folder) the debug = true I still have ho feedback that there is an error in the code. I only have an empty page if there is an error in the code (as for debug = false) What am I missing? I have worked around the issue by chmod -R 777 storage/

Use different PHP version CLI executable for one command

阅读更多关于 Use different PHP version CLI executable for one command

So I have Gentoo box with three PHP versions installed (nevermind the reasons): /usr/bin/php -> /usr/lib64/php5.4/bin/php /usr/bin/php5.5 -> /usr/lib64/php5.5/bin/php /usr/bin/php5.6 -> /usr/lib64/php5.4/bin/php I want to install Laravel framework using composer: $ composer create-project laravel/laravel --prefer-dist This however throws an error because Laravel requires PHP > 5.5.9 and the default php interpreter is 5.4 . So I issue another command: $ /usr/bin/php5.6 /usr/bin/composer create-project laravel/laravel --prefer-dist This takes me one step further, but then some post-install

Mismatch between sys.executable and sys.version in Python

阅读更多关于 Mismatch between sys.executable and sys.version in Python

There are two Python interpreters installed: [user@localhost ~]$ /usr/bin/python -V && /usr/local/bin/python -V Python 2.4.3 Python 2.7.6 Sudo changes PATH for every command it runs as follows: [user@localhost ~]$ env | grep PATH && sudo env | grep PATH PATH=/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/user/bin PATH=/usr/bin:/bin I run a test script: [user@localhost ~]$ cat what_python.py #!/usr/bin/env python import sys print sys.executable print sys.version [user@localhost ~]$ sudo python what_python.py /usr/bin/python 2.7.6 (default, Feb 27 2014, 17:05:07) [GCC 4.1.2

Installing Gems without rvm, as root, with explicit version of ruby

阅读更多关于 Installing Gems without rvm, as root, with explicit version of ruby

问题 I've decided to get rid of rvm, and I'm having trouble compiling a gem with my new version of ruby 1.9.2. The gem requires 1.9.2, I have it, yet says it can't install without, so the error messages makes no sense. How can I explicitly tell the gem to compile with said version of ruby? Gem::InstallError: linecache19 requires Ruby version >= 1.9.2. An error occured while installing linecache19 (0.5.12), and Bundler cannot continue. Make sure that `gem install linecache19 -v '0.5.12'` succeeds

How do I find the name of the conda environment in which my code is running?

阅读更多关于 How do I find the name of the conda environment in which my code is running?

问题 I'm looking for a good way to figure out the name of the conda environment I'm in from within running code or an interactive python instance. The use-case is that I am running Jupyter notebooks with both Python 2 and Python 3 kernels from a miniconda install. The default environment is Py3. There is a separate environment for Py2. Inside the a notebook file, I want it to attempt to conda install foo . I'm using subcommand to do this for now, since I can't find a programmatic conda equivalent

run python script directly from command line

阅读更多关于 run python script directly from command line

#!/usr/bin/env python I put that at the top of a script. I've seen that should make the script runnable from the command line without the need for python programname.py . Unless I'm misunderstanding I should be able to use programname.py as long as I have the above line at the top of the script. Is this correct? It isn't working for me I just get an error indicating that I would have to use python at the beginning of the 'call'. Universal running of Python scripts You can pretty much universally run without the shebang ( #! ) with python myscript.py Or nearly equivalently (it places the