echo $BASH_VERSION --holds the version of this instance of bash
3.2.25(1)-release
echo $HOSTNAME --the name of the your computer
LinuxHost
echo $CDPATH --the search path for the cd command
echo $HISTFILE --the file in which command history is saved
/root/.bash_history
echo $HISTFILESIZE --the maximum number of lines contained in the history file
1000
echo $HISTSIZE --the number of commands to remember in the command history
1000
echo $HOME --the home directory of the current user
/root
echo $IFS --the Internal Field Separator
echo $LANG --used to determine the lang
echo $PATH --the search path for commands
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
echo $PS1 --shows prompt settings
[\u@\h \W]\$
echo $TMOUT --the default timeout for the read builtin command
echo $TERM --the login terminal type
xterm
export TERM=vt100
export TERM=xterm
echo $SHELL --set path to login shell
/bin/bash
echo $DISPLAY --Set X display name
export DISPLAY=:0.1
export EDITOR=/usr/bin/vim --name of default text editor
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