The Ruby interpreter uses the following environment variables to control its behavior. The ENV object contains a list of all currently set environment variables.
Variable | Description |
|---|---|
| Dynamically loads the path that the module searches for. |
| The directory to move to when no parameters are passed to Dir::chdir. Also used in File::expand_path to extend “~”. |
| The directory to move to when no parameters are passed to Dir::chdir and the environment variable HOME is not set. |
| Execute the search path for the child process, and the search path for the Ruby program after the-S option is specified. Each path is separated by a colon (semicolon in DOS and Windows). |
| The search path to the library. Each path is separated by a colon (semicolonin DOS and Windows). |
| Used to modify the RUBYLIB search path, replacing the library prefix path1 with path2 by using the format path1;path2 or path1path2. |
| Command line options passed to the Ruby interpreter. Ignored in taint mode (where $SAFE is greater than 0). |
| The search path of the Ruby program after the-S option is specified. Priority is higher than PATH. Ignored in taint mode (where $SAFE is greater than 0). |
| Specifies the shell to be used when executing the command. If the environment variable is not set, SHELL or COMSPEC is used. |
For Unix, use the env command to view a list of all environment variables.
HOSTNAME=ip-72-167-112-17.ip.secureserver.net RUBYPATH=/usr/bin SHELL=/bin/bash TERM=xterm HISTSIZE=1000 SSH_CLIENT=122.169.131.179 1742 22 SSH_TTY=/dev/pts/1 USER=amrood JRE_HOME=/usr/java/jdk/jre J2RE_HOME=/usr/java/jdk/jre PATH=/usr/local/bin:/bin:/usr/bin:/home/guest/bin MAIL=/var/spool/mail/guest PWD=/home/amrood INPUTRC=/etc/inputrc JAVA_HOME=/usr/java/jdk LANG=C HOME=/root SHLVL=2 JDK_HOME=/usr/java/jdk LOGDIR=/usr/log/ruby LOGNAME=amrood SSH_CONNECTION=122.169.131.179 1742 72.167.112.17 22 LESSOPEN=|/usr/bin/lesspipe.sh %s RUBYLIB=/usr/lib/ruby G_BROKEN_FILENAMES=1 _=/bin/env