wg

wg stands for wait-group. It is a shell command that executes other shell commands asynchronously.

installation

go get github.com/sdeoras/wg/wg

example

# initialize wg and send to background
wg init &

# run some commands
wg run -- sleep 1
wg run -- sleep 1
wg run -- sleep 1

# wait for command completion
wg wait

# note that three sleep commands ran asynchronously and total wait time was only 1 second

server and a client

wg init starts a server and wg run starts a client. It is, therefore, necessary to run wg init in background and to call wg wait to not only wait for command completion but also to kill the server.

limitations

server is not designed to run in multiple instances. wg init will fail if a server is already running.