the > in UNIX

Hi all!
I am confused as to how an old-good UNIX command, like

cat text.txt > new_tex.txt

can be used in PHP.
I tried
system (" cat text.txt > new_text.txt");

but it didn't work, the file new_text.txt was left blank.
Am I doing something wrong with the > ???
Must I use something else instead of 'system' ?

Try;

If you use the backtick operator (or shell_exec()), you can capture the entire output to a string and then hopefully find out what the problem is from there:

Originally Posted by ev5 If you use the backtick operator (or shell_exec()), you can capture the entire output to a string and then hopefully find out what the problem is from there: PHP Code: $var = `cat text.txt > new_text.txt`; echo $var;

I usually use backticks for this sort of thing too.

Don't forget to use escapeshellarg or escapeshellcmd as appropriate.