#!/bin/bash

set -x

for cmdno in $(seq 100)
do
    echo ./one-io
done > commands

mkdir -p temp-directory

./looper \
    --to-stdout \
    --stagger \
    --verbosity 1 \
    --number-padding 3 \
    --directory temp-directory \
    --max-concurrency 10 \
    --numbered \
    --commands-file commands
    

# Usage: ./looper
# 	--directory                             The directory to use for output files
# 	--resolution n                          The frequency with which to check for subprocess
# 	                                        termination
# 	--exit-early                            Exit immediately upon detecting a subprocess that does
# 	                                        not yield the expected value (depends on --or-statuses
# 	                                        and --and-statuses)
# 	--or-statuses                           Or the exit statuses of the subprocesses when computing exit status
# 	--and-statuses                          And the exit statuses of the subprocesses when computing exit
# 	                                        status (default)
# 	--max-concurrency n                     Start <= n subprocesses concurrently (default: infinite)
# 	--maxtime n                             Terminate processes that take longer than n seconds
# 	--derive                                Derive a filename for output from the command run
# 	--numbered                              Just use numbered filenames
# 	--command cmd                           Add cmd to the list of subprocesses
# 	--commands-file filename                Read commands, one per line, from filename
# 	--commands cmd1 cmd2 ... cmdn           Add commands to list of subprocesses from command line
# 	--labeled-command label:cmd             Add cmd to list of subprocesses.  Output in label
# 	--labeled-commands-file filename        Read label:cmd pairs from filename.  cmd output
# 	                                        in filename "label"
# 	--labeled-commands                      label1:cmd1 label2:cmd2 ... labeln:cmdn.  cmdn output in labeln
# 	--parameterized-command                 cmd 'parameter1 parameter2 ... parametern'
# 	                                        EG: 'ssh %s hostname' 'master node1 node2'
# 	                                        output would be files master, node1 and node2
# 	--ssh-command                           cmd 'hostname1 hostname2 ... hostnamen'
# 	                                        EG: 'hostname' 'master node1 node2'
# 	                                        output would be files master, node1 and node2
# 	--scp-command                           "srcfilename" "destfilename" "hostname1 hostname2 ... hostnamen"
# 	                                        EG: "/etc/hosts" "/etc/hosts" "node1 node2"
# 	                                        output filenames are always derived
# 	--rsync1-command                        EG: filename "hostname1 hostname2 ... hostnamen"
# 	--rsync-command                         EG: srcfn dstfn "hostname1 hostname2 ... hostnamen"
# 	                                        Note that --rsync2-command is an alias for --rsync-command
# 	--rsync3-command                        EG: rsyncopts srcfn dstfn "hostname1 hostname2 ... hostnamen"
# 	--number-padding n                      Pad output file numbering to n characters for ls sorting
# 	--no-unlink-desired                     Do not unlink output files with desired exit statuses (depends
# 	                                        on --or-statuses and --and-statuses)
# 	--stagger                               Pause for 0.25 seconds after each command start
# 	--dump-lines number-of-lines            (defaults to 10)
# 	--dump-nothing
# 	--dump-entire
# 	--to-stdout
# 	--verbosity levelno
# 	-v
# 	--help
# 	--absolute-time                         output timestamps relative to program start (only in --to-stdout)
# 	--relative-time                         output timestamps relative to subprogram start (only in --to-stdout)
# 
# In --or-statuses mode, the exit status of this program will be the minimum of the
# subprocesses' exit statuses.
# 
# Similarly, in --and-statuses mode (the default), the exit status of this program will
# be the maximum of the subprocesses' exit statuses.
# 
# The exit status of a subprocess that timed out is always 254.
# 
# Output is saved, one file per command (host), in the specified directory.
# Output files are deleted if the exit status is what was desired (true or
# false depending on --and-statuses or --or-statuses) by default - see
# --no-unlink-desired.
# 
# Don't try to --scp-command and --ssh-command in the same ./looper unless
# the --ssh-command does not depend on the --scp-command; they may be
# run in parallel, so use two ./looper's.
# 
# Comparing --to-stdout and --not-to-stdout:
# 	--to-stdout is a little slower than --not-to-stdout.
# 	--to-stdout is not fully binary-safe.  --not-to-stdout is.
# 	--to-stdout is more informative during a run.  --not-to-stdout is quieter.
# 	--not-to-stdout is the default.