2025-07-18 ...before ...bash20250702.sh

#!/bin/bash

# (c) David Vajda
# bash script excersize
# 2025-07-01

firstname="www"
secondname="dvajda"
thirdname="de"

# hostname
# sublevel domain
# top level domain name


if [[ -n "$1" && -z "$2" ]]
then
    i=0
    name=()
    name+=($(echo "$1" | sed 's/\./\n/g'))
    while [ $i -lt 3 ]
    do
        echo "${name[$i]}"
        i=$(($i+1))
    done
    if [[ "${name[0]}" == "www" && ${name[1]} == "dvajda" && "${name[2]}" == "de" ]]
    then
        echo "das ist der www rechner von David Vajda"
    elif [[ ${name[0]} == "dvajda" && "${name[1]}" == "de" ]]
    then
        echo "das ist  meine domain"
    elif [[ "${name[0]}" == "de" ]]
    then
        echo "das ist zumindest im gleichen land wie  meine"
    fi
else
    echo "hallo welt"
    i=0
    while [ $i -lt 12 ]
    do
        echo "hallo zum $(($i+1))."
        i=$(($i+1))
    done
    M=(Aber Hallo sagt David Vajda)
    i=0
    while [ $i -lt 5 ]
    do
        echo "${M[$i]}"
        i=$(($i+1))
    done
    l=$(ls)
    i=0
    for s in $l
    do
        echo "$s"
        if [ $(($i % 8)) -eq 0 ]
        then
            break
        fi
        i=$(($i+1))
    done
    /bin/bash "$0" "www.dvajda.de"
    /bin/bash "$0" "dvajda.de"
    /bin/bash "$0" "de"
fi