How to run several commands with SSH.Net?

How would you chain Unix commands to run a few at a time?

• Given say some number (say 100) 'whoami' commands, how would you chain commands together to run only a few at a time (say 10)? The goal being to not overwhelm with too many commands at the same time but being able to execute more than one. Consider the numbers variable e.g. use of 'seq' is not allowed. Solution has to be bash compatible. Something in a for-do-done loop....

• Answer:

  I once wrote a tool that does this. It was very simple: it took a list of commands to run and a process pool size, and then ran the commands with that maximum number of processes, starting the next only when one of the currently-running commands finished. For example, if my command list was... expensive-binary foo expensive-binary bar expensive-binary baz expensive-binary qux expensive-binary quux expensive-binary corge expensive-binary grault expensive-binary garply ...and you used a pool size of 3, the program would first start 3 instances of expensive-binary with arguments foo, bar, and baz respectively. When one of them finished, it would start expensive-binary with the argument qux. When another of those would finish, it would start expensive-binary quux. And so on. Then I realized I had essentially written a tiny, unstable subset of http://www.gnu.org/software/parallel/: parallel -a commands -j 3 Note that this is just the tip of the iceberg that is the power of GNU Parallel: it can distribute very complex jobs across multiple machines, with redundancy and dynamic tuning based on completion rate. It is essentially a primitive http://hadoop.apache.org/.