Ubuntu - シドニーで働くプログラマーのBlog(今はIT会社の経営者)

シンボリックリンクの削除のメモ(ファイルも削除されるかどうかの検証)

Jul 3, 2015

AD:

先日バックアップも何もない環境で、ディスク・スペースが100%になり急遽パーミッションを追加してサイトのフォルダの移設が必要なったのですが、サイトのいたるところにシンボリックリンがはられていて、シンボリックリンク（ハードも含めて）の削除がどのようになるか、非常に怖かったのメモしておきます。

シンボリックリンクを削除したらリンク元も消えるのか気になったのですが、unlinkで削除すれば参照元は消えることはないようです。
ですが、リンクしていたファイルは消えるので、必要な場合はcpなどでファイルを持ってきておきます。

$ cd /home/hoge/
$ ls -al
setting.php -> /var/www/test/setting.php
$ unlink ./setting.php
$ ls -al
..
$ cp /var/www/test/setting.php ./

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$ cd /home/hoge/

$ ls -al

setting.php -> /var/www/test/setting.php

$ unlink ./setting.php

$ ls -al

..

$ cp /var/www/test/setting.php ./

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Hatena: 0 | Pocket: 1 | Total: 1 | Feedly: 0

Command ‘qmake ‘ failed – capybara-webkit in Ubuntu 14.04

Apr 2, 2015

AD:

環境

Ruby 2.2.1
Rails 4.2.1
Ubuntu 14.04

でcapybara-webkitをインストールしようとしたら下記のエラーがでました。

qmake: could not find a Qt installation of ''
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--without-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/home/vagrant/.rbenv/versions/2.2.1/bin/$(RUBY_BASE_NAME)
	--with-gl-dir
	--without-gl-dir
	--with-gl-include
	--without-gl-include=${gl-dir}/include
	--with-gl-lib
	--without-gl-lib=${gl-dir}/lib
	--with-zlib-dir
	--without-zlib-dir
	--with-zlib-include
	--without-zlib-include=${zlib-dir}/include
	--with-zlib-lib
	--without-zlib-lib=${zlib-dir}/lib
Command 'qmake ' failed

extconf failed, exit code 1

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qmake: could not find a Qt installation of ''

*** extconf.rb failed ***

Could not create Makefile due to some reason, probably lack of necessary

libraries and/or headers. Check the mkmf.log file for more details. You may

need configuration options.

Provided configuration options:

--with-opt-dir

--without-opt-dir

--with-opt-include

--without-opt-include=${opt-dir}/include

--with-opt-lib

--without-opt-lib=${opt-dir}/lib

--with-make-prog

--without-make-prog

--srcdir=.

--curdir

--ruby=/home/vagrant/.rbenv/versions/2.2.1/bin/$(RUBY_BASE_NAME)

--with-gl-dir

--without-gl-dir

--with-gl-include

--without-gl-include=${gl-dir}/include

--with-gl-lib

--without-gl-lib=${gl-dir}/lib

--with-zlib-dir

--without-zlib-dir

--with-zlib-include

--without-zlib-include=${zlib-dir}/include

--with-zlib-lib

--without-zlib-lib=${zlib-dir}/lib

Command 'qmake ' failed

extconf failed, exit code 1

解決方法

エラー通りqmakeがないので、入れてあげて解決です。

sudo apt-get install qt5-default libqt5webkit5-dev

1	sudo apt-get install qt5-default libqt5webkit5-dev

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Hatena: 0 | Pocket: 0 | Total: 0 | Feedly: 0

/etc/apache2をrm -rfで消してしまった場合

Jan 14, 2015

AD:

purgeを入れて、ファイルごと消して、再インストールで解決

sudo apt-get --purge remove apache2
sudo apt-get install apache2

1 2	sudo apt-get --purge remove apache2 sudo apt-get install apache2

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Hatena: 0 | Pocket: 0 | Total: 0 | Feedly: 0

Ruby 1.9.3 gem pg error in Ubuntu

Nov 21, 2014

AD:

環境

VagrantでUbuntu14.04
rbenvを使ってRuby 1.9.3-p551
gem pg
で下記のエラーがでました。

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /home/vagrant/.rbenv/versions/1.9.3-p551/bin/ruby extconf.rb
checking for pg_config... yes
Using config values from /usr/bin/pg_config
You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.
You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.
checking for libpq-fe.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
	--with-opt-dir
	--without-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/home/vagrant/.rbenv/versions/1.9.3-p551/bin/ruby
	--with-pg
	--without-pg
	--with-pg-dir
	--without-pg-dir
	--with-pg-include
	--without-pg-include=${pg-dir}/include
	--with-pg-lib
	--without-pg-lib=${pg-dir}/lib
	--with-pg-config
	--without-pg-config
	--with-pg_config
	--without-pg_config
/home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:506:in `try_cpp'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:983:in `block in find_header'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:254:in `open'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:254:in `open'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:280:in `postpone'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for'
	from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:982:in `find_header'
	from extconf.rb:40:in `<main>'


Gem files will remain installed in /var/www/html/hoge/vendor/bundle/ruby/1.9.1/gems/pg-0.13.2 for inspection.
Results logged to /var/www/html/hoge/vendor/bundle/ruby/1.9.1/gems/pg-0.13.2/ext/gem_make.out
An error occurred while installing pg (0.13.2), and Bundler cannot continue.
Make sure that `gem install pg -v '0.13.2'` succeeds before bundling.
</main>

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Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/home/vagrant/.rbenv/versions/1.9.3-p551/bin/ruby extconf.rb

checking for pg_config... yes

Using config values from /usr/bin/pg_config

You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.

checking for libpq-fe.h... *** extconf.rb failed ***

Could not create Makefile due to some reason, probably lack of

necessary libraries and/or headers. Check the mkmf.log file for more

details. You may need configuration options.

Provided configuration options:

--with-opt-dir

--without-opt-dir

--with-opt-include

--without-opt-include=${opt-dir}/include

--with-opt-lib

--without-opt-lib=${opt-dir}/lib

--with-make-prog

--without-make-prog

--srcdir=.

--curdir

--ruby=/home/vagrant/.rbenv/versions/1.9.3-p551/bin/ruby

--with-pg

--without-pg

--with-pg-dir

--without-pg-dir

--with-pg-include

--without-pg-include=${pg-dir}/include

--with-pg-lib

--without-pg-lib=${pg-dir}/lib

--with-pg-config

--without-pg-config

--with-pg_config

--without-pg_config

/home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)

You have to install development tools first.

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:506:in `try_cpp'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:983:in `block in find_header'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:254:in `open'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:254:in `open'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:280:in `postpone'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for'

from /home/vagrant/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/mkmf.rb:982:in `find_header'

from extconf.rb:40:in `<main>'

Gem files will remain installed in /var/www/html/hoge/vendor/bundle/ruby/1.9.1/gems/pg-0.13.2 for inspection.

Results logged to /var/www/html/hoge/vendor/bundle/ruby/1.9.1/gems/pg-0.13.2/ext/gem_make.out

An error occurred while installing pg (0.13.2), and Bundler cannot continue.

Make sure that `gem install pg -v '0.13.2'` succeeds before bundling.

</main>

解決

libpq-dev(UbuntuのPostgres系パッケージ)が入っていないが原因ですよねー

sudo apt-get install libpq-dev

1	sudo apt-get install libpq-dev

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Hatena: 0 | Pocket: 0 | Total: 0 | Feedly: 0

nokogiri (1.5.2)が入らない！！件

Feb 27, 2014

AD:

Rails3.1の古い案件の修正が入ったので、環境を構築していたのですが、Nokogiriが1.5.2を入れないと動かない構成でして、苦労しましたのでメモしておきます。

エラー内容

&#65284;bundle install
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /usr/bin/ruby1.9.1 extconf.rb
extconf.rb:10: Use RbConfig instead of obsolete and deprecated Config.
checking for libxml/parser.h... yes
checking for libxslt/xslt.h... yes
checking for libexslt/exslt.h... yes
checking for iconv_open() in iconv.h... yes
checking for xmlParseDoc() in -lxml2... yes
checking for xsltParseStylesheetDoc() in -lxslt... yes
checking for exsltFuncRegister() in -lexslt... yes
checking for xmlHasFeature()... yes
checking for xmlFirstElementChild()... yes
checking for xmlRelaxNGSetParserStructuredErrors()... yes
checking for xmlRelaxNGSetParserStructuredErrors()... yes
checking for xmlRelaxNGSetValidStructuredErrors()... yes
checking for xmlSchemaSetValidStructuredErrors()... yes
checking for xmlSchemaSetParserStructuredErrors()... yes
creating Makefile

make
compiling xml_io.c
xml_io.c: In function &lsquo;io_read_callback&rsquo;:
xml_io.c:28:3: warning: conversion to &lsquo;int&rsquo; from &lsquo;size_t&rsquo; may alter its value [-Wconversion]
compiling xml_reader.c
compiling xml_element_content.c
compiling xml_entity_decl.c
compiling xml_sax_push_parser.c
compiling xml_node_set.c
xml_node_set.c: In function &lsquo;dealloc_namespace&rsquo;:
xml_node_set.c:9:13: warning: cast discards &lsquo;__attribute__((const))&rsquo; qualifier from pointer target type [-Wcast-qual]
xml_node_set.c:11:13: warning: cast discards &lsquo;__attribute__((const))&rsquo; qualifier from pointer target type [-Wcast-qual]
compiling xml_processing_instruction.c
compiling xml_comment.c
compiling xml_document.c
xml_document.c: In function &lsquo;set_encoding&rsquo;:
xml_document.c:159:12: warning: cast discards &lsquo;__attribute__((const))&rsquo; qualifier from pointer target type [-Wcast-qual]
xml_document.c: In function &lsquo;canonicalize&rsquo;:
xml_document.c:505:15: warning: cast discards &lsquo;__attribute__((const))&rsquo; qualifier from pointer target type [-Wcast-qual]
compiling xml_sax_parser.c
compiling xml_schema.c
compiling xml_attribute_decl.c
compiling html_sax_parser_context.c
compiling xml_dtd.c
compiling xml_encoding_handler.c
compiling xml_element_decl.c
compiling xml_entity_reference.c
compiling html_entity_lookup.c
compiling html_document.c
compiling xml_syntax_error.c
compiling html_element_description.c
html_element_description.c: In function &lsquo;get_description&rsquo;:
html_element_description.c:249:10: warning: cast discards &lsquo;__attribute__((const))&rsquo; qualifier from pointer target type [-Wcast-qual]
compiling xml_document_fragment.c
compiling nokogiri.c
compiling xml_node.c
compiling xml_cdata.c
compiling xml_xpath_context.c
xml_xpath_context.c: In function &lsquo;xpath_generic_exception_handler&rsquo;:
xml_xpath_context.c:189:3: error: format not a string literal and no format arguments [-Werror=format-security]
cc1: some warnings being treated as errors
make: *** [xml_xpath_context.o] Error 1


Gem files will remain installed in /home/vagrant/.bundler/tmp/3761/gems/nokogiri-1.5.2 for inspection.
Results logged to /home/vagrant/.bundler/tmp/3761/gems/nokogiri-1.5.2/ext/nokogiri/gem_make.out
An error occurred while installing nokogiri (1.5.2), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.5.2'` succeeds before bundling.

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＄bundle install

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb

extconf.rb:10: Use RbConfig instead of obsolete and deprecated Config.

checking for libxml/parser.h... yes

checking for libxslt/xslt.h... yes

checking for libexslt/exslt.h... yes

checking for iconv_open() in iconv.h... yes

checking for xmlParseDoc() in -lxml2... yes

checking for xsltParseStylesheetDoc() in -lxslt... yes

checking for exsltFuncRegister() in -lexslt... yes

checking for xmlHasFeature()... yes

checking for xmlFirstElementChild()... yes

checking for xmlRelaxNGSetParserStructuredErrors()... yes

checking for xmlRelaxNGSetValidStructuredErrors()... yes

checking for xmlSchemaSetValidStructuredErrors()... yes

checking for xmlSchemaSetParserStructuredErrors()... yes

creating Makefile

make

compiling xml_io.c

xml_io.c: In function ‘io_read_callback’:

xml_io.c:28:3: warning: conversion to ‘int’ from ‘size_t’ may alter its value [-Wconversion]

compiling xml_reader.c

compiling xml_element_content.c

compiling xml_entity_decl.c

compiling xml_sax_push_parser.c

compiling xml_node_set.c

xml_node_set.c: In function ‘dealloc_namespace’:

xml_node_set.c:9:13: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual]

xml_node_set.c:11:13: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual]

compiling xml_processing_instruction.c

compiling xml_comment.c

compiling xml_document.c

xml_document.c: In function ‘set_encoding’:

xml_document.c:159:12: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual]

xml_document.c: In function ‘canonicalize’:

xml_document.c:505:15: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual]

compiling xml_sax_parser.c

compiling xml_schema.c

compiling xml_attribute_decl.c

compiling html_sax_parser_context.c

compiling xml_dtd.c

compiling xml_encoding_handler.c

compiling xml_element_decl.c

compiling xml_entity_reference.c

compiling html_entity_lookup.c

compiling html_document.c

compiling xml_syntax_error.c

compiling html_element_description.c

html_element_description.c: In function ‘get_description’:

html_element_description.c:249:10: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual]

compiling xml_document_fragment.c

compiling nokogiri.c

compiling xml_node.c

compiling xml_cdata.c

compiling xml_xpath_context.c

xml_xpath_context.c: In function ‘xpath_generic_exception_handler’:

xml_xpath_context.c:189:3: error: format not a string literal and no format arguments [-Werror=format-security]

cc1: some warnings being treated as errors

make: *** [xml_xpath_context.o] Error 1

Gem files will remain installed in /home/vagrant/.bundler/tmp/3761/gems/nokogiri-1.5.2 for inspection.

Results logged to /home/vagrant/.bundler/tmp/3761/gems/nokogiri-1.5.2/ext/nokogiri/gem_make.out

An error occurred while installing nokogiri (1.5.2), and Bundler cannot continue.

Make sure that `gem install nokogiri -v '1.5.2'` succeeds before bundling.

解決方法

NokogiriとUbuntuで下記のもので入るようになるとはあるのですが、1.5.2はこれでもうまく行かず。。

sudo apt-get install libxml2-dev libxslt1-dev

1	sudo apt-get install libxml2-dev libxslt1-dev

下記のオプションをつけてなんとかインストールできました。

sudo gem install nokogiri -v '1.5.2'  -- --with-cflags="-O2 -pipe -march=native -w"

1	sudo gem install nokogiri -v '1.5.2' -- --with-cflags="-O2 -pipe -march=native -w"

参考サイト

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Hatena: 0 | Pocket: 1 | Total: 1 | Feedly: 0

VagrantのUbuntuでenable_i18n()の言語設定のエラー

Feb 27, 2014

AD:

VagrantにPostgresをChef-Soloで入れてから、下記のエラーがでるようになりました。
recipeの書き方に問題があったようです。。。。

エラー内容

$ bundle install rails
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.3.1 final 0
Distributor ID:	Ubuntu
Description:	Ubuntu 13.04
Release:	13.04
Codename:	raring
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 69, in main
    enable_i18n()
  File "/usr/lib/command-not-found", line 40, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.3/locale.py", line 541, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

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$ bundle install rails

Sorry, command-not-found has crashed! Please file a bug report at:

https://bugs.launchpad.net/command-not-found/+filebug

Please include the following information with the report:

command-not-found version: 0.3

Python version: 3.3.1 final 0

Distributor ID: Ubuntu

Description: Ubuntu 13.04

Release: 13.04

Codename: raring

Exception information:

unsupported locale setting

Traceback (most recent call last):

File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard

callback()

File "/usr/lib/command-not-found", line 69, in main

enable_i18n()

File "/usr/lib/command-not-found", line 40, in enable_i18n

locale.setlocale(locale.LC_ALL, '')

File "/usr/lib/python3.3/locale.py", line 541, in setlocale

return _setlocale(category, locale)

locale.Error: unsupported locale setting

解決した方法

言語設定に問題があるようなので、下記の内容を設定して解決しました。

export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
locale-gen en_US.UTF-8
sudo dpkg-reconfigure locales

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export LANGUAGE=en_US.UTF-8

export LANG=en_US.UTF-8

export LC_ALL=en_US.UTF-8

locale-gen en_US.UTF-8

sudo dpkg-reconfigure locales

参考サイト

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Hatena: 0 | Pocket: 0 | Total: 0 | Feedly: 0

Rails 4.0.0 & Ruby 2.0.0でdebuggerでReadlineのエラー

Aug 9, 2013

AD:

せっかく新しい案件が来たので、Ruby2 & Rails4で開発しているんですが、debuggerでReadlineのエラーがでたので、メモしておきます。

まず環境

Vagrantのubuntu12.10.64bit
rbenv – Ruby 2.0.0p247
rbenv – Rails 4.0.0

エラー内容

$ rails s --debugger
/home/vagrant/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/debugger-1.6.1/lib/ruby-debug/interface.rb:67:in `block (2 levels) in initialize': uninitialized constant Debugger::LocalInterface::Readline (NameError)

1 2	$ rails s --debugger /home/vagrant/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/debugger-1.6.1/lib/ruby-debug/interface.rb:67:in `block (2 levels) in initialize': uninitialized constant Debugger::LocalInterface::Readline (NameError)

エラーを読みかぎりReadlineがないらしいので、Readlineをインストール

Readlineを指定して、rbenvでRubyを入れなおし

$ sudo apt-get install libreadline6 libreadline6-dev
$ CONFIGURE_OPTS="--with-readline-dir=/usr/include/readline" rbenv install 2.0.0-p247
$ rbenv global 2.0.0-p247
$ rbenv rehash

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$ sudo apt-get install libreadline6 libreadline6-dev

$ CONFIGURE_OPTS="--with-readline-dir=/usr/include/readline" rbenv install 2.0.0-p247

$ rbenv global 2.0.0-p247

$ rbenv rehash

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
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could not bind IPv4 socket: Cannot assign requested address エラー by PostgreSQL

Aug 6, 2013

AD:

VagrantのUbuntuにPostgreSQLをインストールして、立ち上げようとすると下記のようなエラーがでたので、メモしておきます。

エラー内容

$ apt-get update
$ apt-get install postgresql
$ psql --version
psql (PostgreSQL) 9.1.9
$ service postgresql start
* Restarting PostgreSQL 9.1 database server                                                                                                                                
* The PostgreSQL server failed to start. Please check the log output:
2013-08-05 22:19:14 UTC LOG:  could not bind IPv4 socket: Cannot assign requested address
2013-08-05 22:19:14 UTC HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
2013-08-05 22:19:14 UTC WARNING:  could not create listen socket for "localhost"
2013-08-05 22:19:14 UTC FATAL:  could not create any TCP/IP sockets

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$ apt-get update

$ apt-get install postgresql

$ psql --version

psql (PostgreSQL) 9.1.9

$ service postgresql start

* Restarting PostgreSQL 9.1 database server

* The PostgreSQL server failed to start. Please check the log output:

2013-08-05 22:19:14 UTC LOG: could not bind IPv4 socket: Cannot assign requested address

2013-08-05 22:19:14 UTC HINT: Is another postmaster already running on port 5432? If not, wait a few seconds and retry.

2013-08-05 22:19:14 UTC WARNING: could not create listen socket for "localhost"

2013-08-05 22:19:14 UTC FATAL: could not create any TCP/IP sockets

解決方法

コネクション指定の問題なので、下記のように変更しました。

$ vi /etc/postgresql/9.1/main/postgresql.conf
#listen_addresses = 'localhost'
&#12288;&darr;
listen_addresses = '*'

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$ vi /etc/postgresql/9.1/main/postgresql.conf

#listen_addresses = 'localhost'

　↓

listen_addresses = '*'

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
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Ubuntu12.04にMongoDBをインストール

Feb 23, 2013

AD:

このページを参考にUbuntuにMongoDBを入れようと思ったらうまくいかなかったのでメモしておきます。
やっていることは、GnuPGへキーを登録して、MongoDB用のパッケージ管理システムを登録して、インストールの流れです。

$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
$ sudo sh -c 'echo "deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen" | tee -a /etc/apt/sources.list.d/10gen.list'
deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen
$ sudo apt-get -y update
$ sudo apt-get -y install mongodb-10gen

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$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10

$ sudo sh -c 'echo "deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen" | tee -a /etc/apt/sources.list.d/10gen.list'

deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen

$ sudo apt-get -y update

$ sudo apt-get -y install mongodb-10gen

操作関係

$ sudo service mongodb start
mongodb start/running, process 19200

$ sudo service mongodb stop
mongodb stop/waiting

$ sudo service mongodb restart
mongodb stop/waiting
mongodb start/running, process 19224

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$ sudo service mongodb start

mongodb start/running, process 19200

$ sudo service mongodb stop

mongodb stop/waiting

$ sudo service mongodb restart

mongodb stop/waiting

mongodb start/running, process 19224

データの登録、検索

MongoDBは、JavascriptのエンジンであるSpiderMonkeyを拡張した、Javascriptシェル？です。
なんで、JavaScriptの記述でデータのが取得が可能です。

$ mongo
MongoDB shell version: 2.2.3
connecting to: test
&gt; show dbs
local	(empty)
test	(empty)
&gt; use test
switched to db test
&gt; db.test.save( { a: 1 } )
&gt; db.test.find()
{ "_id" : ObjectId("51285b019fc2311ea475b159"), "a" : 1 }

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$ mongo

MongoDB shell version: 2.2.3

connecting to: test

> show dbs

local (empty)

test (empty)

> use test

switched to db test

> db.test.save( { a: 1 } )

> db.test.find()

{ "_id" : ObjectId("51285b019fc2311ea475b159"), "a" : 1 }

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
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Ubuntu(12.04) にlessをインストール

Feb 22, 2013

AD:

過去のサイトで、Lessを使用しているものがあったので、lessをインストール

$ gem install less
$ less --version
less 444
Copyright (C) 1984-2009 Mark Nudelman

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$ gem install less

$ less --version

less 444

Twitter:
Warning: Undefined array key "Twitter" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
0 | Facebook: 0 | Google Plus:
Warning: Undefined array key "Google+" in /home/sazaeau/mizoshiri.com/public_html/blog.mizoshiri.com/wp-content/plugins/sns-count-cache/sns-count-cache.php on line 2897
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シンボリックリンクの削除のメモ(ファイルも削除されるかどうかの検証)

Command ‘qmake ‘ failed – capybara-webkit in Ubuntu 14.04

環境

解決方法

/etc/apache2をrm -rfで消してしまった場合

Ruby 1.9.3 gem pg error in Ubuntu

環境

解決

nokogiri (1.5.2)が入らない！！件

エラー内容

解決方法

VagrantのUbuntuでenable_i18n()の言語設定のエラー

エラー内容

解決した方法

Rails 4.0.0 & Ruby 2.0.0でdebuggerでReadlineのエラー

まず環境

エラー内容

Readlineを指定して、rbenvでRubyを入れなおし

could not bind IPv4 socket: Cannot assign requested address エラー by PostgreSQL

エラー内容

解決方法

Ubuntu12.04にMongoDBをインストール

操作関係

データの登録、検索

Ubuntu(12.04) にlessをインストール

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