Does `parallel' work for anybody? When I run $ ls | parallel echo
I get the following error message, and nothing happens. parallel: Warning: No more processes: Decreasing number of running jobs to 1. parallel: Warning: Raising ulimit -u or /etc/security/limits.conf may help. parallel: Error: No more processes: cannot run a single job. Something is wrong at file-name. Any idea about what's happening?
