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* ruby.1: wrote about ruby related environment variables.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4998 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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aamine 2003-11-21 05:49:59 +00:00
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@ -302,6 +302,35 @@ state messages during compiling scripts. You don't have to specify
this switch, unless you are going to debug the Ruby interpreter.
.El
.Pp
.Sh ENVIRONMENT
.Bl -tag -width "12"
.Pp
.It Sy "RUBYLIB"
A colon-separated list of directories
that are appended to ruby's library load path ($:).
e.g. RUBYLIB="$HOME/lib/ruby:$HOME/lib/rubyext"
.Pp
.It Sy "RUBYOPT"
Additional ruby options.
e.g. RUBYOPT="-w -Ke"
.Pp
.It Sy "RUBYPATH"
A colon-separated list of directories
that are used when ruby searches ruby programs for "ruby -S".
This variable precedes PATH environment variable.
.Pp
.It Sy "RUBYSHELL"
The path to the system shell command.
This environment variable is enabled for only mswin32, mingw32, and OS/2 platform.
When this variable is not defined, ruby refers to COMSPEC.
.Pp
.It Sy "PATH"
Ruby refers to PATH environment variable on calling Kernel#system.
.Pp
.It Sy "RUBYLIB_PREFIX"
This variable is obsolete.
.El
.Pp
.Sh AUTHORS
Ruby is designed and implemented by
.An Yukihiro Matsumoto Aq matz@netlab.jp .