Try to use QProcess

[avis_phoenix]

Hi, I'm try to do a simple tool in QT; this tool convert files from dos format to unix format, using tr program

The I use a QProcess to comunicate tr with my program, but I failed to make it work, because in the error output ( readAllStandardError() ) say:
"usage: tr [-Ccsu] string1 string2
tr [-Ccu] -d string1
tr [-Ccu] -s string1
tr [-Ccu] -ds string1 string2"

and the files are not modified...

What is my mistake??

The statement I am trying to use is:

tr -d "\015" < DOS_File

The code is this:

QProcess *td;
QString prg,file;
 
td = new QProcess(this);
 
prg =  "tr -d \"\\015\" < " + file;
td->start(prg);

QProcess *td;
QString prg,file;

td = new QProcess(this);

prg =  "tr -d \"\\015\" < " + file;
td->start(prg);

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I have also tried to use this:

QProcess *td;
QStringList inst;
QString file;
 
td = new QProcess(this);
 
inst<< "-d"<<"\"\\015\""<<"<"<<file;
td->start("tr",inst);

QProcess *td;
QStringList inst;
QString file;

td = new QProcess(this);

inst<< "-d"<<"\"\\015\""<<"<"<<file;
td->start("tr",inst);

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I'm use QT 4.6 in mac

Thanks