set variable in terminal in linux code example

Example 1: shell set environment variable

export VARNAME="my value"      # shorter, less portable version

Example 2: set permanant environemt variable

$EDITOR ~/.profile
#add lines at the bottom of the file:  
     export LD_LIBRARY_PATH=/usr/lib/oracle/11.2/client64/lib
     export ORACLE_HOME=/usr/lib/oracle/11.2/client64