parssh: Parallel SSH orchestration in a Bash session.
=====================================================

Instructions
------------

- Source pars.sh to your Bash session:

```bash
. pars.sh
```

- Run *parssh* function for usage information:

```bash
parssh --help
```

- Run simple command on listed servers from list:

```bash
parssh "md5sum /bin/bash" < SERVERLIST
```

- Export FUNCTIONS and VARIABLES from local Bash session to remote hosts from
SERVERLIST and execute:

```bash
parssh "$(declare -f FUNCTIONS; declare -p VARIABLES); FUNCTIONS" < SERVERLIST
```

- Export FUNCTIONS and VARIABLES from local Bash session to remote hosts from
SERVERLIST and execute with a concurrency of 35, saving and displaying output
along with the commands and meta-data as a header in the 'PROJECT_NAME.out'
and 'PROJECT_NAME.err' files:

```bash
parssh -35 -C -t PROJECT_NAME \
  "$(declare -f FUNCTIONS; declare -p VARIABLES); FUNCTIONS" < SERVERLIST
```