Arun

• Jul 7th, 2005

 

exported variable is visible to the child processes while the normal variables are not.

akebono

• Jul 27th, 2005

 

export LANG=C 
will make the variable LANG the global variable, put it into the global environment. all other processes can use it. 
 
LANG=C 
will change the value only in the current script. 

Sangram

• Apr 23rd, 2007

 

The Shell variable which is exported would available to all the programs outside the Shell also. And the shell variable which is not exported, would available for that shell or for the shell program only, in which the variable is declared.

narhars2004

 Profile Answers by narhars2004 

• Apr 27th, 2007

 

Export , is to set the vaibales globally
No export , u are using the variables , locally .

riteshvado

 Profile Answers by riteshvado 

• Aug 13th, 2007

 

try this simple script it will clear your concept :-

script a.sh :-
----------
export A=3
B=5
sh b.sh
--------

script b.sh :-
-----------
echo "exported variable $A is :- $A"
echo "Variable $B -- $B "

---------

A persists in b.sh whereas B doesn't.

nitashaa

 Profile Answers by nitashaa 

• Jul 18th, 2008

 

global variable is created using export command in ksh -
export x='name'
In csh its created using setenv command-
setenv x 'name'
this 'x' variable will be visible in current shell as well as in child shell also.

local variable is created in ksh as x='name'.In csh as -
x 'name'. This variable will be visible only in current shell.