Hi All i am trying to build up a set of subprocess.Ponen calls to replicate the effect of a horribly long shell command. I'm not clear how I can do one part of this and wonder if anyone can advise. I'm on Linux, fairly obviously.
I have a command which (simplified) is a tar -c command piped through to xargs: tar -czvf myfile.tgz -c $MYDIR mysubdir/ | xargs -I '{}' sh -c "test - f $MYDIR/'{}'" (The full command is more complicated than this; I got it from a shell guru). IIUC, when called like this, the two occurences of '{}' in the xargs command will get replaced with the file being added to the tarfile. Also IIUC, I will need two calls to subprocess.Popen() and use subprocess.stdin on the second to receive the output from the first. But how can I achive the substitution of the '{}' construction across these two calls? Apologies if I've made any howlers in this description - it's very likely... Cheers J^n -- http://mail.python.org/mailman/listinfo/python-list