Questions tagged [ruby]
Ruby is a dynamic, reflective, general-purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features.
150
questions
0
votes
0answers
40 views
how to run a Ruby on rails server
Would anyone have a tip for how to run a ruby on rails server? There is an API that I would like to explore.
This is the git repo.
Thanks for any tips, I just dont have any experience for what would ...
0
votes
1answer
53 views
Permissions problem when using ruby based snap 'mdl'
Because I don't understand Ruby, but want to use the ruby based program mdl (markdownlint), I have installed it using snap.
While I can run the program, if I try and set up a customizations in a ~/....
0
votes
0answers
38 views
Ruby script to create a temporary file for use with greenletters
I'm using expect to test autocompletions in zsh (actually using the Ruby greenletters gem, with uses Ruby's PTY under the covers, to call expect). After digging through the documentation and old ...
0
votes
1answer
292 views
Metasploit error on Alpine
When I trying to run ./msfconsole I got this error:
Traceback (most recent call last):
9: from ./msfconsole:48:in `<main>'
8: from ./msfconsole:48:in `require'
7: from /...
0
votes
1answer
61 views
Vagrant: errors about ignoring Rubygems as their extensions are not built after install on Fedora 31
After installing the vagrant packages on Fedora 31 and subsequently running the vagrant command, there are these errors regarding ignored Rubygems:
Ignoring ffi-1.10.0 because its extensions are not ...
0
votes
1answer
54 views
How do I insert my bash variable into my ruby command?
I'm using bash shell. I have defined the following variable ...
localhost:tmp davea$ echo $json
{"id": "abc", "name": "dave"}
I would like to insert the value of this var into a ruby command, so I ...
0
votes
0answers
66 views
Help need to setup a Ruby on Rails App stack using docker
I have setup a Rails app on a docker container and a apache web server on another container. I need the apache web server to access the rails app for every request made. The issue is I have to ...
0
votes
1answer
29 views
Difference between interactive bash and commands executed via ssh
I have a setup on a server of ruby using a tool called rvm (Ruby Version Manager. It works fine. rvm adds some stuff to the path so that it can control what version of Ruby I get when I just type ruby....
-1
votes
2answers
88 views
Replace all backslash escape sequence-producable characters with their escaped escape sequences
EDIT: I'm very sorry, that I initially didn't make my requirements clear. I don't actually have access to the string written in a backslash-escaped way and have amended the example to make that ...
1
vote
1answer
61 views
Do subprocesses keep pipes open?
I am trying to understand the behaviour of programs that launch subprocesses, when run in a pipeline.
This bash program, fork.sh, prints and returns immediately:
(sleep 1) &
echo 'here'
But ...
0
votes
1answer
104 views
Use ERB in tmuxinator with a bash array environment variable?
I want to use tmuxinator to open panes (and run commands with an argument in each) by looping through a bash array.
Is that possible? How would I do that?
0
votes
1answer
3k views
Gem::Ext::BuildError: ERROR: Failed to build gem native extension
I have the following Dockerfile:
FROM debian:stretch-backports
RUN apt-get update && apt-get install -y --no-install-recommends \
build-essential \
ruby ruby-dev \
...
1
vote
1answer
1k views
How to preserve filename and folder structure when using foremost recovery program?
I am desperately needing to run the linux recovery software foremost and preserve filenames and folder structure. As you might know the program renames the recovered files with a numerical value and ...
1
vote
2answers
362 views
Choose an option from select in bash
I am trying to run gem uninstall bundler through a bash script.
The issue occurs when I have multiple bundler versions installed. It prompts the number of versions, and last option is to uninstall all ...
-1
votes
2answers
2k views
Ubuntu could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
I'm trying to create a new user form my rails application. I already ran psql -p 5432 -h localhsot -U postgres and created a new user. Then I added the user with sudo adduser user_name and afterwards ...
3
votes
2answers
568 views
How does 'Open with' a custom executable in Linux work?
I have a file called foo.txt. I want to associate my own program with the mime-type .txt so that my program opens a terminal and shows the contents of foo.txt as standard output. I would prefer Ruby, ...
-1
votes
1answer
362 views
Ruby on Rails Routing Error [closed]
I am running ruby on rails on an Ubuntu Droplet and I am encountering the following error when I navigate to my domain name:
Routing Error
uninitialized constant HomeController
Rails.root: /home/...
4
votes
1answer
468 views
With gnu find, what is the difference between -print0 and -printf “%p\0”
In a terminal I can run...
find . -type f -print0
./testdir/testfile2.txt./testdir/testfile.txt
And then...
find . -type f -printf "%p\0"
./testdir/testfile2.txt./testdir/testfile.txt
They both ...
3
votes
1answer
734 views
Remove multiple strings from file on command line, high performance [closed]
Is there an elegant, high-performance one-liner way to remove multiple complete strings from an input?
I process large text files, e.g., 1 million lines in inputfile, and 100k matching strings in ...
1
vote
0answers
308 views
Can't install ruby on rails MacOSX
While trying to install ruby on rails with
sudo gem install rails
I get the following error
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed ...
1
vote
1answer
549 views
Ruby on NixOS — FFI Gem installation failing when building native extensions
I am a Rubyist of many years. I cannot determine what's missing to prevent FFI from installing.
Here is the error from the make.out file (gotta love that name):
make[3]: *** [Makefile:1048: ...
1
vote
1answer
283 views
NixOS Ruby Development - Installing all needed devkit libraries and headers to build native extensions
I'm a Ruby developer thoroughly enjoying NixOS. I just need to know how to set up dependencies to build native dependencies on gems like FFI and Nokogiri.
Currently I am getting this error:
The ...
1
vote
0answers
384 views
Can't access gems after installing ruby and gems with ansible
I'm working on an Ansible script to install my standard working environment (Ruby on Rails).
Ansible runs under sudo, and the gems that have been installed are only accessable under sudo too. If I ...
0
votes
1answer
121 views
emerge install package with flag which not in ruby_targets
$ emerge --info | grep ruby
..... RUBY_TARGETS="ruby23" ......
And I run emerge with --newuse and --deep, it will ask me to add use flag with ruby22. These packages are not in @system.
These ...
1
vote
1answer
371 views
sh script to run multiple files in multiple languages
Is it possible to have an sh script that would run a python file, run a command ruby file and run a ruby sonicPI file?
What would this look like?
Thank you!
Adi
1
vote
1answer
477 views
Fastest way to determine if directory contents have changed since last time
I have a script that checks a directory using mdls* (to sort by added time) and them performs some operations. However, mdls is a bit slow so I’d like to run it only when absolutely necessary (i.e. ...
0
votes
1answer
146 views
where are codiad projects stored locally?
In Firefox I installed codiad as:
where is ruby_hello actually located?
(When it asked for the absolute path, I wasn't able to put in /home/thufir/... because of permission, so just typed in "...
0
votes
2answers
2k views
Error installing Ruby on Rails (Arch Linux)
I'm currently having an issue when trying to install Ruby on Rails on my Arch Linux ARM system. But it's also not just rails that won't install, it's anything I try to install using gem. Here is some ...
4
votes
1answer
2k views
Gem install producing “OpenSSL” error
For at least a week now i have been trying to install Bettercap on my Raspberry PI using gem but whenever i type in:
sudo gem install bettercap
i receive an error message that says
ERROR: While ...
1
vote
1answer
49 views
How to start gem ffaker in Debian?
I install ffaker but cannot find it in my PATH
masi@masi:~$ sudo gem install ffaker
Fetching: ffaker-2.6.0.gem (100%)
Successfully installed ffaker-2.6.0
Parsing documentation for ffaker-2.6.0
...
0
votes
1answer
401 views
Incompatible character encoding in Jenkins can't resolve
I am attempting to run a Cucumber (Ruby) Test Suite from Jenkins that tests whether or not 2-4 byte UTF-8 characters are valid names for groups.
I have tried a number of solutions and have been ...
1
vote
2answers
3k views
unable to access my rails using Public IP of my Ubuntu server in a browser
I have a Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-63-generic x86_64) server and my public IP is something like 183.xx.xxx.xx (curl -4 icanhazip.com).I have started my rails app using the command:
rails s -...
1
vote
1answer
215 views
How can I use ruby gem commands like bundler when ruby is installed by nix package manager?
I'm new to nix package manager.
After installing nix into Ubuntu 16.04 LTS(Japanese translated version), I installed ruby with nix-env command. Then I did gem install bundler. That seemed to work ...
1
vote
1answer
257 views
Use RVM to point to custom Ruby path
I have my ruby-2.3.1 installed in /opt/rubies/ruby-2.3.1/bin/ruby, but by some problems with dependencies KDE downloads ruby-2.1 to /usr/bin/ruby and now my system uses that version.
I've install RVM ...
0
votes
1answer
40 views
How to install KDE without Ruby?
For a project I'm using Ruby 2.3.1,
I'm using a CentOS7 OS with ruby 2.3.1 installed. When I run yum install kde-workspace it installs/downgrades to ruby 2.0.0.648-29.el7 which makes the application ...
0
votes
2answers
950 views
How to iterate over files using awk, bash, or ruby?
I have three markdown files on my machine:
$ ls | grep md
bar.md
baz.md
foo.md
Each file has the given content:
$ cat *md
i am bar
i am baz
i am foo
As an example, I'd like "loop over all the ...
0
votes
1answer
3k views
ulimit value not changing for a process
We have a ruby application that started throwing lot of "unable to create new socket: Too many open files" errors recently
I have updated "etc/security/limits.conf" as below
root soft nofile ...
0
votes
3answers
83 views
using linux command and gnu software inside a ruby script
Can I use ls command or wget gnu software inside a Ruby script?
Actually, can I use Ruby instead of Bash , and use all of Linux commands and Gnu Software ?
1
vote
1answer
618 views
What is the best way to update Ruby 2.x on Debian 7?
In fact, my goal is to install Capistrano. Currently it requires Ruby version 2.x and higher. But Ruby is available max 1.9.3 in Debian 7. So I was faced with dilemma, which is written in the title of ...
0
votes
0answers
111 views
mysql.so: undefined symbol: vio_blocking
I'm trying to set up a Rails 2.2.2 installation (for an old app that I maintain) in a new Linux Mint 18 install.
I've installed mysql (5.7.16-0ubuntu0.16.04.1 (Ubuntu)) and, using RVM, have installed ...
0
votes
1answer
1k views
Ruby version issues
I have been practising setting up a production environment with puppet, and now I'm setting up everything to accommodate HTTP requests with Apache.
Since Puppet runs on Ruby, I also need Passenger ...
0
votes
1answer
933 views
Permission error when creating backup on gitlab omnibus installation
I am using gitlab version 7.10.4 and I am trying to upgrade the installation. But I am getting this when I tried to create back up
gitlab-rake gitlab:backup:create
Errno::EPERM: Operation not ...
1
vote
1answer
427 views
Redirecting stderr of a Ruby script not working as expected
I have a command that I think is outputting to stderr because when I redirect stdout to /dev/null I still get output printed to the screen.
However, when I redirect stderr to /dev/null I also get ...
0
votes
1answer
256 views
Error installing the rmagick gem in Ruby 1.8.6 rvm - “checking for InitializeMagick() in -lMagick… no”
I have an old Rails app I maintain which uses Ruby 1.8.6. I'm trying to get a new install of Linux Mint 18 up and running so I can develop for the app. I managed to install the same (almost) version ...
1
vote
1answer
414 views
Service Start Issue Systemd
I have configured a dradis.service file in /lib/systemd/system, it is called dradis.service. And it is its content:
[Unit]
Description=Dradis web application
[Install]
WantedBy=multi-user.target
[...
3
votes
1answer
619 views
Is there man command for bundle?
There is a command bundle in ruby.
I want use man command or similar function for bundle. Does it exist?
If there is it, I want to know how to look for separated command like bundle gem.
I can see ...
-2
votes
3answers
1k views
Kali linux : unable to “make” airdrop-ng / lorcon / pylorcon2
here is what I'm trying to do
cd lorcon
./configure --libdir=/usr/lib
make
make install
cd pylorcon2
python setup.py build
python setup.py install
cd ../ruby-lorcon/
ruby extconf.rb
make
make ...
0
votes
0answers
574 views
Howto upgrade ruby on a Ubuntu 14.04.2 (Trusty) on a Raspberry Pi 2 (armhf architecture)
I need to install json via
# gem install json --no-rdoc --no-ri
but I get as result
ERROR: Error installing json:
json requires Ruby version ~> 2.0.
I use Ubuntu Trusty (this image) and ...
2
votes
0answers
572 views
x64_mingw not a valid platform - Rails 5
Bluehost Shared Server
ruby -v 2.2.2
rails -v 5.0.0.1
gem -v 2.4.5
~/.bashrc
export HPATH=$HOME
export GEM_HOME=$HPATH/ruby/gems
export GEM_PATH=$GEM_HOME:/lib64/ruby/gems/1.9.3
export GEM_CACHE=$...
2
votes
0answers
368 views
Metasploit ruby “bad interpreter: Permission denied”
When I'm typing in my terminal msfconsole I got something like this:
bash: /usr/bin/msfconsole: /usr/share/metasploit-framework/ruby: bad interpreter: Permission denied
ls -l /usr/share/metasploit-...
