async

async is a tool to run shell commands in parallel and is designed to be able to quickly parallelize shell scripts with minimal changes. It was inspired by GNU Parallel, with the main difference being that async retains state between commands by running a server in the background.

Usage

All information about the command line interface is available using async --help. Below is an example on how to use async to parallelize commands:

```bash

!/bin/bash

S="/tmp/example_socket"

async -s="$S" server --start

for i in {1..20}; do # prints command output to stdout async -s="$S" cmd -- bash -c "sleep 1 && echo test $i" done

wait until all commands are finished

async -s="$S" wait

configure the server to run four commands in parallel

async -s="$S" server -j4

mkdir "/tmp/exdir" for i in {21..40}; do # redirects command output to /tmp/exdir/file* async -s="$S" cmd -o "/tmp/ex_dir/file$i" -- bash -c "sleep 1 && echo test $i" done

async -s="$S" wait

stops server

async -s="$S" server --stop ```

If you encounter an unexpected error or crash, please turn on logging by setting the environment variable RUST_LOG=debug and open an issue on the Github repository.

Installation

async can be installed using cargo with cargo install async-exec or from the AUR.