Perl: Run perl script in the current process

vino · #1 (**permalink**) 12-07-2005

I have a question regarding running perl in the current process.

I shall demonstrate with an example.

Look at this.

Code:

sh-2.05b$ pwd
/tmp
sh-2.05b$ cat test.sh
#! /bin/sh
cd /etc
sh-2.05b$ ./test.sh 
sh-2.05b$ pwd
/tmp
sh-2.05b$ . ./test.sh 
sh-2.05b$ pwd
/etc
sh-2.05b$

So invoking ./test.sh spawns a sub-shell and runs the script. Whereas . ./test.sh will run the script in the current shell.

Now, how can I simulate the latter behavior with a perl script. I tried the following but it did not help.

Code:

sh-2.05b$ pwd
/tmp
sh-2.05b$ cat test.pl
#! /usr/bin/perl
chdir("/etc");
sh-2.05b$ ./test.pl 
sh-2.05b$ pwd
/tmp
sh-2.05b$ . ./test.pl 
sh: ./test.pl: line 2: syntax error near unexpected token `"/tmp"'
sh: ./test.pl: line 2: `chdir("/tmp");'
sh-2.05b$

Is there any other way of running the script to make sure that the changes made by the script will affect the current process ?

Thanks,
Vino

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