| Code | Kommentar |
| `$(date +%A)` | ruft die Systemvariable ab, die den aktuellen Wochentag speichert |
Bei Variablen wird zwischen Name und '=' keine Leerzeichen gelassen!
### Klammern ```bash #! /bin/bash firstnumber=$1 secondnumber=$2 echo The sum is $(($firstnumber+$secondnumber)) ``` ### Input ```bash #! /bin/bash echo -n "Hello, what is your name? " #-n bewirkt, dass die Eingabe nicht in einer neuen Zeile stattfindet read firstname echo -n "Thank you, and what is your surname? " read surname clear echo Hello $firstname $surname, how are you today? ``` ### If, then und Else ```bash #! /bin/bash echo -n "Hello, what is your Name " read firstname echo -n "And what is your surname? " read surname clear if [ "$firstname" == "Hermann" ] && [ "$surname" == "Pelzer" ] then echo "Awesome name," $firstname $surname else echo Hello $firstname $surname, how are you today? fi ``` ### While-Schleife ```bash #! /bin/bash count=0 while [ $count -lt 100 ];do echo $count let count=count+1 done ``` ### For-Schleife ```bash #! /bin/bash for count in {0..100}; do echo $count let count=count+1 done ``` ### Choice ```bash #! /bin/bash auswahl = 4 echo "1. Tails" echo "2. Is" echo "3. Awesome" echo -n "Please choose an option (1, 2, or 3) " while [ $choice -eq 4 ] ; do read choice if [ $choice -eq 1 ] ; then echo "You have chosen: Tails" else if [ $choice -eq 2 ] ; then echo "You have chosen: Is" else if [ $choice -eq 3 ] ; then echo "You have chosen: Awesome" else echo "Pleas make a choise between 1 to 3" echo "1. Tails" echo "2. Is" echo "3. Awesome" echo -n "Please choose an option (1, 2, or 3) " choice=4 fi fi fi done ```