in reply to System call doesn't recognise '>'

system LIST doesn't use the shell. > is a shell command. If you wanted to use execute a shell command using system, you'd have to do 
system('sh', '-c', 'foo > file');

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or the equialent 

system('foo > file');

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The latter is also suitable for Windows.

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Re^2: System call doesn't recognise '>'
by Lauras (Initiate) on Dec 10, 2008 at 21:52 UTC 
    my @array = ($command, $arg1, $arg2, $arg3);
system ('@array > $outfile');

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    Results in:

    Can't spawn "cmd.exe": No such file or directory at D:\advanced_programming\test_syscall.pl line 11.

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[d/l]
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      system ('@array > $outfile');

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      That line doesn't do what you think it does. Single quotes don't interpolate. You want to use double quotes and you want to check the return code of system():

      system( "@array > $outfile" ) == 0
    or die "Couldn't launch [@array > $outfile]: $!/$?";

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[d/l]
[select]
        my @array = ($command, $arg1, $arg2, $arg3);
system( "@array > $outfile" ) == 0
    or die "Couldn't launch [@array > $outfile]: $!/$?";

        [download]

        Results in:

        Can't spawn "cmd.exe": No such file or directory at D:\advanced_progra
+mming\test_syscall.pl line 29.
Couldn't launch [C:\clover\clover.exe D:\advanced_programming\vb_van_m
+otif.dat D:\advanced_programming\test.fa D:\advanced_programming\back
+ground.fa > C:\clover\out.txt]: No such file or directory/65280 at D:
+\advanced_programming\test_syscall.pl line 29.

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        Again: If I paste the string C:\clover\clover.exe D:\advanced_programming\vb_van_motif.dat D:\advanced_programming\test.fa D:\advanced_programming\background.fa > C:\clover\out.txt in command line cmd.exe , it returns perfect output to the out.txt file.

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[d/l]
[select]
      I'd be surprised if there was a file named @array...
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[d/l]

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