From: laredotornado Date: 2008-03-03T08:04:56+09:00 Subject: Re: How do I get the server name? On Mar 2, 4:48 pm, Jano Svitok wrote: > On Sun, Mar 2, 2008 at 11:42 PM, Andrei Maxim wrote: > >  I was actually surprised to see that ENV.class returns Object. It > >  certainly acts like a Hash so... > > http://ruby-doc.org/docs/ProgrammingRuby/html/rubyworld.html#S3 Thanks all for your replies but there's something odd. I guess I'm still confused about how to access values from this thing that is not quite a hash. In irb, I did as Andrei suggested and thought I saw a HOSTNAME key, but when I try and print out the value ("puts ENV['HOSTNAME']"), I get nil. Why does it appear when I print out the hash but not when I try and access the value individually? Here's the irb action: irb(main):068:0* ENV.each { |key, value| puts "#{key} - #{value}" } USER - myusername LOGNAME - myusername HOME - /home/myusername PATH - /usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/myusername/ bin MAIL - /var/spool/mail/myusername SHELL - /bin/zsh SSH_CLIENT - 67.190.94.163 61497 22 SSH_CONNECTION - 67.190.94.163 61497 192.168.1.99 22 SSH_TTY - /dev/pts/1 TERM - xterm SHLVL - 1 PWD - /usr/local/apache2/htdocs/easyrx/app/controllers OLDPWD - /usr/local/apache2/htdocs/easyrx/app HOSTNAME - mydomain.com HISTSIZE - 1000 INPUTRC - /etc/inputrc LS_COLORS - no=00:fi=00:di=00;34:ln=00;36:pi=40;33:so=00;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=00;32:*.cmd=00;32:*.exe=00;32:*.com=00;32:*.btm=00;32:*.bat=00;32:*.sh=00;32:*.csh=00;32:*.tar=00;31:*.tgz=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.zip=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.bz=00;31:*.tz=00;31:*.rpm=00;31:*.cpio=00;31:*.jpg=00;35:*.gif=00;35:*.bmp=00;35:*.xbm=00;35:*.xpm=00;35:*.png=00;35:*.tif=00;35: CVS_RSH - ssh CVSROOT - /usr/local/cvs-repository G_BROKEN_FILENAMES - 1 SSH_ASKPASS - /usr/libexec/openssh/gnome-ssh-askpass KDEDIR - /usr LANG - en_US.UTF-8 LESSOPEN - |/usr/bin/lesspipe.sh %s QTDIR - /usr/lib/qt-3.3 QTINC - /usr/lib/qt-3.3/include QTLIB - /usr/lib/qt-3.3/lib JAVA_HOME - /usr/lib/jdk CATALINA_HOME - /usr/local/tomcat _ - /usr/local/bin/irb LINES - 46 COLUMNS - 157 => {"USER"=>"myusername", "LOGNAME"=>"myusername", "HOME"=>"/home/ myusername", "PATH"=>"/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/ home/myusername/bin", "MAIL"=>"/var/spool/mail/myusername", "SHELL"=>"/ bin/zsh", "SSH_CLIENT"=>"67.190.94.163 61497 22", "SSH_CONNECTION"=>"67.190.94.163 61497 192.168.1.99 22", "SSH_TTY"=>"/ dev/pts/1", "TERM"=>"xterm", "SHLVL"=>"1", "PWD"=>"/usr/local/apache2/ htdocs/easyrx/app/controllers", "OLDPWD"=>"/usr/local/apache2/htdocs/ easyrx/app", "HOSTNAME"=>"mydomain.com", "HISTSIZE"=>"1000", "INPUTRC"=>"/etc/inputrc", "LS_COLORS"=>"no=00:fi=00:di=00;34:ln=00;36:pi=40;33:so=00;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=00;32:*.cmd=00;32:*.exe=00;32:*.com=00;32:*.btm=00;32:*.bat=00;32:*.sh=00;32:*.csh=00;32:*.tar=00;31:*.tgz=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.zip=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.bz=00;31:*.tz=00;31:*.rpm=00;31:*.cpio=00;31:*.jpg=00;35:*.gif=00;35:*.bmp=00;35:*.xbm=00;35:*.xpm=00;35:*.png=00;35:*.tif=00;35:", "CVS_RSH"=>"ssh", "CVSROOT"=>"/usr/local/cvs-repository", "G_BROKEN_FILENAMES"=>"1", "SSH_ASKPASS"=>"/usr/libexec/openssh/gnome- ssh-askpass", "KDEDIR"=>"/usr", "LANG"=>"en_US.UTF-8", "LESSOPEN"=>"|/ usr/bin/lesspipe.sh %s", "QTDIR"=>"/usr/lib/qt-3.3", "QTINC"=>"/usr/ lib/qt-3.3/include", "QTLIB"=>"/usr/lib/qt-3.3/lib", "JAVA_HOME"=>"/ usr/lib/jdk", "CATALINA_HOME"=>"/usr/local/tomcat", "_"=>"/usr/local/ bin/irb", "LINES"=>"46", "COLUMNS"=>"157"}