Questions tagged [ruby]

Ruby is a dynamic, reflective, general-purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features.

Filter by
Sorted by
Tagged with
0
votes
1answer
23 views

where did yum install my ruby executable?

I'm trying to install a modern Ruby on Amazon Linux which I think is RHEL based. I ran sudo yum install rh-ruby26 which is a legit package, and it installed some files. However when I try and run ruby,...
1
vote
4answers
5k views

Unable to install libyaml-devel libffi-devel in CentOS

I am trying to install latest of ruby through RVM. I could not install install as it requires libyaml-devel and libffi-dev. When ever i try to install them i get error that no package found [root@dev ...
1
vote
2answers
4k 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 -...
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 ...
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
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
62 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 ~/....
1
vote
2answers
6k views

Error installing nokogiri: ERROR: Failed to build gem native extensions

I can build my rails application on my mac On my Ubuntu machine when I bundle I get errors with a bunch of gems including nokogiri, version 1.6.7.2 Error installing nokogiri: ERROR: Failed to build ...
0
votes
1answer
345 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
0answers
42 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 ...
-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 ...
0
votes
1answer
70 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
67 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
77 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
32 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....
0
votes
1answer
927 views

`rvm list remote` not showing binaries for Ubuntu 14.04 box

I'm trying to provision a dev box with rvm on Ubuntu 14.04 (via Vagrant and Ansible). I've installed rvm: gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3 \curl -sSL https://get.rvm.io | ...
-1
votes
2answers
103 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
73 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
112 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?
3
votes
2answers
719 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, ...
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
963 views

“Failed to build gem native extension” when installing xively-rb for raspberry Pi

I'm trying to install the xively Ruby gem on the Raspberry Pi - http://rubygems.org/gems/xively-rb However, during install the following occurs: gem install xively-rb Building native extensions. ...
9
votes
4answers
45k views

git push fails with remote: error: hook declined to update refs/heads/master

I'm recently trying to start my own project on a community git repo, and I've been having some complications. I'm new to git, but here's what I've been trying to do to just test it. I run the ...
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
385 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 ...
6
votes
3answers
1k views

Small Linux distro with Ruby

I have been using Puppy Linux for basic Linux needs, however now I would prefer one that has Ruby included, so that it does not have to be downloaded. I would prefer a small distro that can run from ...
3
votes
3answers
3k views

How can I create a bash script which runs irb, then some ruby code?

I'm trying to do this to make unit testing a breeze for myself. The contents of an example script in question are as follows: irb require 'random_utils.rb' a = SuccessChecker.new Right now this ...
1
vote
2answers
2k views

Ruby gems not recognized in bash script

I have built a node.js app that listens for webhooks. Currently it is used to build a jekyll website. I have configured it on my server and jekyll build works perfectly when I run it in the root of ...
5
votes
1answer
5k views

Can I refresh my shell within a shell script?

I am trying to setup a script that starts with a minimal CentOS 6 install and provisions it for Ruby development. #!/bin/bash # Add PostgreSQL Repo rpm -i http://yum.postgresql.org/9.1/redhat/rhel-6-...
2
votes
1answer
132 views

How do I make the “1.9.2” Ruby string point to the final release with RVM?

I'm using RVM to manage my Ruby environment on OSX, and currently it's interpreting '1.9.2' as ruby-1.9.2-rc2 instead of the final release. How can I update this to make it behave as expected?
-1
votes
1answer
392 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/...
-1
votes
1answer
51 views

How can I check the ruby format for a bunch of files and/or a single file?

Most of them have a common pattern that is a filename of ..._rspec.rb One of them is a filename without that ending (but does end in .rb). How can I run ruby -wc (or in fact any operations such as ...
4
votes
1answer
499 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
808 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 ...
0
votes
1answer
412 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
0answers
315 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
579 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
296 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
392 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 ...
-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 ...
3
votes
1answer
8k views

How can I run script without root to sniff network (libpcap)?

I have a script (in ruby): require 'ffi/pcap' pcap = FFI::PCap::Live.new(:dev => "wlan0", :timeout => 1) pcap.loop() do |this,pkt| puts pkt.body end When I try to run the script , ...
0
votes
1answer
123 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
374 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
597 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
166 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 ...
1
vote
1answer
50 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 ...
8
votes
2answers
27k views

Making ruby available to all users

I intend to use Ruby when programming my Raspberry Pi which is running the Debian based Occidentals. Via SSH, I executed: curl -L https://get.rvm.io | bash -s stable --ruby which downloaded the ruby ...
0
votes
3answers
84 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
218 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 ...