Help for this perl script

[biobrain]

#!/usr/bin/perl -w

system ("perl spd.pl");

system ("gunzip xyz.aa.gz");

exit;

Here 2nd system call will generate a unzip file xyz.aa now i want that if any other file already exist in the folder it should be overwritten without asking any user input

what flag i need to use with gunzip so that it should overwrite the existing file xyz.aa automatically.

regards

 

[stevexff]

Have you tried man gunzip?

Steve

[small]"Every program can be reduced by one instruction, and every program has at least one bug. Therefore, any program can be reduced to one instruction which doesn't work." (Object:erlDesignPatterns)[/small]

 

[biobrain]

sorry not

Now i will

 

[biobrain]

i have seen man gunzip sorry i am unable to understand

 

[MillerH]

[url=http://perldoc.perl.org/functions/unlink.html][black][b]unlink[/b][/black][/url] [red]'[/red][purple]xyz.aa.gz[/purple][red]'[/red][red];[/red]

- Miller

 

[stevexff]

What I meant was you type in the command man gunzip on your terminal, and it tells you the syntax of the gunzip command. From which you could establish that

-f --force
Force compression or decompression even if the file has multiple links or the corresponding file already exists, or if the compressed data
is read from or written to a terminal. If the input data is not in a format recognized by gzip, and if the option --stdout is also given,
copy the input data without change to the standard ouput: let zcat behave as cat. If -f is not given, and when not running in the back-
ground, gzip prompts to verify whether an existing file should be overwritten.

is the option you want

system("gunzip -f  xyz.aa.gz");

Steve

[small]"Every program can be reduced by one instruction, and every program has at least one bug. Therefore, any program can be reduced to one instruction which doesn't work." (Object:erlDesignPatterns)[/small]