-s command in Unix

crmpicco · #1 (**permalink**) November 6th, 2006, 11:27 AM

Code:

if (-s "/dataupload/parsers/broadband/picco/picco.txt") 
{
...code
}

i cant seem to find out what the -s does???

Picco

www.crmpicco.co.uk
www.ie7.com

ciderpunx · #2 (**permalink**) November 14th, 2006, 11:48 AM

erm...

If this is a bash script then

Code:

if [-S "/dataupload/parsers/broadband/picco/picco.txt"]
then
  #do something
fi

Would test if the file in question was a socket. Maybe its perl, tho'

Code:

if (-s "/dataupload/parsers/broadband/picco/picco.txt") 
{
  # do something
}

Would test for the size of a file and return true if it was greater than 0 bytes. if it is perl you'd be better off doing

Code:

if (-e "/dataupload/parsers/broadband/picco/picco.txt" && 
    -f "/dataupload/parsers/broadband/picco/picco.txt")
{
  # do something
}

To see if the file exists (-e) and is a regular file (-f).

If it isn't perl or bash then you might need to let us know what it is!

--
Don't Stand on your head - you'll get footprints in your hair
http://charlieharvey.org.uk
http://charlieharvey.com

crmpicco · #3 (**permalink**) November 16th, 2006, 08:41 AM

thanks. yeah, its a Perl script. how do you mean test if it was a socket?

www.crmpicco.co.uk
www.ie7.com

ciderpunx · #4 (**permalink**) November 22nd, 2006, 07:38 AM

Hey crmpicco,

A socket is a secial type of file that lets you write accross the network. There's an intro at:

http://www.devshed.com/c/a/Perl/Sock...mming-in-PERL/

Cheers

--
Don't Stand on your head - you'll get footprints in your hair
http://charlieharvey.org.uk
http://charlieharvey.com

crmpicco · #5 (**permalink**) November 28th, 2006, 12:10 PM

thanks for that Charlie, interesting article

www.crmpicco.co.uk
www.ie7.com

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