A bash script used for uploading a second script over ssh to a server and invoking it with given parameters. Using bash interal argument parsing.

backup.sh

#!/bin/bash

# set -e: Fail if some command exits with non-zero status
# set -u: Fail on use of uninitialized variable
set -eu

# Usage
if [[ $# -lt 2 ]]; then
    echo "Usage: $0 -h|--host <host> -u|--user <username> -p|--password <password> [-c|--compression <'gz'|'zip'|'xz'>]"
    exit 2
fi

# Parsing options
ARGS=$(getopt --options 'h:u:pc:' --long 'host:,user:,password,compression:' -- "$@")

eval set -- "$ARGS"
unset ARGS

while true; do
    case "$1" in
        '-h'|'--host')
            host="$2"
            shift 2;;
        '-u'|'--user')
            user="$2"
            shift 2;;
        '-p'|'--password')
            read -s -p 'Password: ' password
            shift;;
        '-c'|'--compression')
            case "$2" in
            '')
                compression='xz';;
            *)
                compression="$2";;
            esac
            shift 2;;
        '--')
            shift
            break;;
        *)
            printf "Unknown option %s among %s\n" "$1" "$*"
            exit 1;;
    esac
done

#echo "Host:$host"
#echo "User:$user"
#echo "Password:$password"
#echo "Compression:$compression"

exec 3<<< "$password" sshpass -d3 scp server.sh $user@$host:~/htdocs/

exec 3<<< "$password" sshpass -d3 ssh $user@$host "./htdocs/server.sh $compression"