Taking input from configuration file in perl

[sainiamit25]

Hi All,

I have a perl code which use a server ip and password for execution. Now i want to deploy this code on many servers. Instead of changing the ip & password values in all the perl code on all servers, i want to feed the input to the perl code through a (config) file. Sometimes the passwords may change on the server, i dont want to go into the code and change it. Just make a small modification in the config file and thats it. Can anybody help me how can i do that? Which perl module is needed for the same?

Thanks in advance for your help.

Cheers,
Amit

[numberwhun]

I don't know about modules, but I can tell you an easy way to do it without modules.

Create your config file with two columns. the first column is the parameter and the second its value. I typically space separate them.

Now, the config file will always have the values in the same order, so you can open the file so it has a file handle, then do something like this to read the parameters:

open(CONFIG,"<$myfile.config")|| die "Can't open config file\n";
 
 
$config_rec = <CONFIG>;
chomp($config_rec) ;
($param1, $value1) = split(/\s+/, $config_rec);
 
$config_rec = <CONFIG>;
chomp($config_rec) ;
($param2, $value2) = split(/\s+/, $config_rec);
 
$config_rec = <CONFIG>;
chomp($config_rec) ;
($param3, $value3) = split(/\s+/, $config_rec);
 
 

That is a quick easy way that I have used to do read in the configuration files values. Hope this helped.

Regards,

Jeff

[sainiamit25]

Hi Jeff,

Thanks very much. i will try your sugegstion.

Cheers,
Amit

[sainiamit25]

HI Jeff,

I am not able to open the config file. I made myfile.config in /usr/local and put in the values as:
a 21
b 23
c 44
but when i copy paste ur code in the perl script, it is not able to open the file. KIndly suggest

Cheers,
Amit

[sainiamit25]

Sorry Jeff, there we a typo at my end..

Cheers,
Amit