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Write an executable file in Unix

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# 1  
Old 12-03-2009
Write an executable file in Unix
Hi,

I want to write an executable file in unix env to go to a particular path instead of always typing the long path cd /app/oracle/product/10.2.0/Db_1/scripts/prejib/sample.
I have tried with the below script in but not working . please help me


bash-3.00$ cat a.sh
#!/bin/sh
mypath=/app/oracle/product/10.2.0/Db_1/scripts/pressy/sample
echo $mypath
cd $mypath

bash-3.00$ chmod +x a.sh
bash-3.00$ sh a.sh
/app/oracle/product/10.2.0/Db_1/scripts/pressy/sample
bash-3.00$ pwd
/app/oracle/product/10.2.0/Db_1/scripts/pressy

After executing the file a.sh, I am in the same path only . How can I achieve that?
# 2  
Old 12-03-2009
you have to source that file..
that is run that as
Code:
. ./scriptname

# 3  
Old 12-03-2009
I am begginer to to UNIX. Can you please elaborate?
# 4  
Old 12-03-2009
When you execute a shell script it will fork a process and it will do all the operation in that sub shell. So the current working directory will be changed
only in the sub shell, not in the parent shell.

Code:
If you want to go to a particular path always, use alias.

Either use the following command in a current shell or use this in a ~/.bashrc 
if you want to use this alias always in all the shell.

$alias change='cd fullpath'

Once the alias is set, just type 'change' in the unix command line, the current working directory will be changed.

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