View Full Version : Indirection operator not working from QProcess

8th June 2010, 13:56
Dear Friends
I am trying to execute an external process for LINUX from within my QT application. Please see below.

QProcess *process = new QProcess(this);
process->start("qsub runbatch | awk '{print $3}' > processID.dat");

This should execute
qsub runbatch | awk '{print $3}' > processID.dat
which is a LINUX command the ledt part of >
qsub runbatch | awk '{print $3}'
should return a process ID which is an interger and I want this to be written on a file
which I'll use later.

But I can see this process is not writing any file by name processID.dat
Can anyone help me to resolve this problem , why its not executing a LINUX process

Thanks in advance

8th June 2010, 14:16
QProcess executes a single process. It does not support shell features such as pipes, redirection, or parameter substitution.

8th June 2010, 15:06
However, you can read the output and write it to the file from within your program.