vtian

• Apr 17th, 2007

 

./myExeSh run the script in another shell.
. /myExeSh executing in  the current shell. All variable in the shell script will leave in the current shell after execution finished.

./myExeSh = sh myExeSh     (I assume you are using sh as shell, the only difference is myExeSh does not required to be executable when using sh myExeSh)
. /myExeSh = source myExeSh

penchal

• Apr 18th, 2007

 

When we run a script, it will be executed in a child shell.
Changes in the child shell will not be reflected in the parent shell.
For reflecting those changes, we use dot(.) command.

For Example ..In a script myExesh.sh ..only one statement is present

Let it be cd $HOME

After executing the script using ./myExesh, you will be present in the same directory where you executed the script.

Now execute the script using . /myExesh. After ececuting the script you will be in the home directory.