Get directory list sorted by size

[POM]

Posit:

I want to retrieve a directory listing (of images) on a UNIX server,
sorted by size (in descending order). I wanted to just write a simple
runtime process exec to do the job... something like this:

Process p =
Runtime.getRuntime().exec("/bin/ls -l /images | sort +4nr");

But then I saw somewhere that it will parse the exec arguments as
separate commands. Anybody have an idea that will return the desired
results.

Thanks.

 

[Christophe Vanfleteren]

Posit:

I want to retrieve a directory listing (of images) on a UNIX server,
sorted by size (in descending order). I wanted to just write a simple
runtime process exec to do the job... something like this:

Process p =
Runtime.getRuntime().exec("/bin/ls -l /images | sort +4nr");

But then I saw somewhere that it will parse the exec arguments as
separate commands. Anybody have an idea that will return the desired
results.

Thanks.

Look at File.listFiles(), File.length(), Arrays.sort() and Comparator.

 

[Roedy Green]

Look at File.listFiles(), File.length(), Arrays.sort() and Comparator.

for additional help see http://mindprod.com/jgloss/file.html and
http://mindprod.com/jgloss/sort.html

 

[Sudsy]

Posit:

I want to retrieve a directory listing (of images) on a UNIX server,
sorted by size (in descending order).

But then I saw somewhere that it will parse the exec arguments as
separate commands. Anybody have an idea that will return the desired
results.

This should do what you want:

Process p = Runtime.getRuntime().exec(
new String[] { "/bin/ls", "-lS", "/images" } );

(note the -S flag: sort by size)

 

[Roedy Green]

This should do what you want:

Process p = Runtime.getRuntime().exec(
new String[] { "/bin/ls", "-lS", "/images" } );

Not if he's running windows!

 

[Andrew Thompson]

Process p = Runtime.getRuntime().exec(
new String[] { "/bin/ls", "-lS", "/images" } );

Not if he's running windows!

(quoted from earlier in thread..)
"I want to retrieve a directory listing
(of images) on a UNIX server,.."

 

[Sudsy]

Process p = Runtime.getRuntime().exec(
new String[] { "/bin/ls", "-lS", "/images" } );

Not if he's running windows!

But if that were the case then OP wouldn't have provided /bin/ls as
the executable in the first place, c'nest pas?

 

[Andrew Thompson]

Process p = Runtime.getRuntime().exec(
new String[] { "/bin/ls", "-lS", "/images" } );

Not if he's running windows!

(quoted from earlier in thread..)
"I want to retrieve a directory listing
(of images) on a UNIX server,.."

I checked the OP when I writ that,
though now I notice it was *requoted*
in Sudsy's post as well.

 

[Silvio Bierman]

Process p = Runtime.getRuntime().exec(
new String[] { "/bin/ls", "-lS", "/images" } );

Not if he's running windows!

But if that were the case then OP wouldn't have provided /bin/ls as
the executable in the first place, c'nest pas?

That would be n'est-ce pas