Bash Programming Examples

exameninfo

bash

pwd
mkdir Desktop
touch Hallo.pas Info.doc
ls
rm main.sh

cat Hallo.pas
mkdir Informatik
mkdir Informatik/Pascal Informatik/Desktop

mv Hallo.pas Informatik/Pascal
chmod 764 Informatik/Pascal/Hallo.pas
ls -l Informatik/Pascal/Hallo.pas
cd Informatik/Pascal
pwd
ls
mkdir ../Linux
cp ../../Info.doc ../Linux
cp Hallo.pas ../Linux/Test.pas

Ejercicio3

bash

#! bin/bash


mv *3*.txt *3*.md

Execute Bash Shell Online

bash

#!bin/bash

touch ttk_report.csv

if [ -e ttk_report.csv ] 
then
    echo "Exist a ttk_report.csv => backup........."
    if [ -d "BackUp" ]
    then
        da=`date '+%Y-%m-%d_%H:%M:%S'`
        cp ttk_report.csv BackUp/ttk_report_$da.csv
    else
        mkdir BackUp
        da=`date '+%Y-%m-%d_%H:%M:%S'`
        cp ttk_report.csv BackUp/ttk_report_$da.csv
    fi
else
    touch ttk_report.csv
fi

ls BackUp/
cd BackUp

Case in shell script

bash

#! /bin/bash

for process in status mysqld bash
do
  count="$(pidof ${process} | wc -w)"
  case "${count}" in

    0)  echo "Zero"
        ;; 
    1)  echo "One"
        ;;
    *)  echo "Another"
        ;;
  esac
done

launchanapp

bash

sudo bash -c ‘cat << \EOF > /etc/init.d/ec2sampleapp

APP_EXEC=”/usr/bin/java -Xmx700m -jar /home/ec2-user/ec2-masterclass-sample-app.jar
NAME=ec2sampleapp
PIDFILE=/var/run/$NAME.pid
LOG_FILE=”/home/ec2-user/$NAME.log”
SCRIPTNAME=/etc/init.d/$NAME
RETVAL=0

start() {
	echo “Starting $NAME…”
	$APP_EXEC 1>”$LOG_FILE” 2>&1 &
	echo $! > “$PIDFILE”
	echo “$NAME started with pid $!”
}  

status() {
	printf “%-50s” “Checking $NAME…”
	if [ -f $PIDFILE ]; then
		PID=$(cat $PIDFILE)
		if [ -z “$(ps axf | grep ${PID} | grep -v grep)” ]; then
			printf “Process dead but pidfile exists”
		else
			echo “Running”
		fi
	else
		printf “Service not running”
	fi
}

stop(){
	printf “%-50s” “Stopping $NAME”
	PID=cat $PIDFILE
	if [ -f $PIDFILE ]; then
		kill -HUP $PID
		printf “%s\n” “Ok”
		rm -f $PIDFILE
	else 
		printf “%s\n” “pidfile not found”
	fi
}

case “$1” in
	start)
	start
	;;
	status)
	status
	;;
	stop)
	stop
	;;
	restart)
		$0 stop
		$0 start
	;;
	*)
		echo “Usage: $0 {start|status|stop|restart}”
		exit 1
	;;
Esac
EOF’

asdf

bash

# Hello World Program in Bash Shell
echo este es el contenido de augabe1 >Aufgabe1
touch Addition.pas Vortrag.txt
mkdir Aufgabe2
chmod 750 Aufgabe1
chmod 755 Addition.pas
chmod 744 Vortrag.txt
ls -la
pwd
mkdir Info1 Info2 Info3 Info4
cp Aufgabe1 Info1
cp -r Aufgabe2 Info2
ls
cd Info1
chmod 751 Aufgabe1
cat Aufgabe1
mv ../Addition.pas ../Rechnen.pas
cp ../Rechnen.pas Test.pas
ls -l Test.pas
mkdir ../Info3/Robotik ../Info3

Execute Bash Shell Online

bash

#Variable dan operator

tarif=2000
lama=8
harusbayar=$(($tarif * $lama))
uangbayar=20000
kembalian=$(($uangbayar-$harusbayar))

echo "tarif parkir $tarif "
echo  "anda parkir selama $lama jam"
echo "maka anda harus bayar $harusbayar"
echo "uang yang anda bayarkan $uangbayar maka kembaliannya adalah $kembalian"

#Array
#Contoh Data Array
OCS=(OCS1 OCS2 OCS3 OCS4 OCS5 OCS6)

#Menampilkan Data ke-
echo ${OCS[0]}

#Menampilkan Jumlah Data
echo "Jumlah OCS yang Kita Punya ${#OCS[@]}"

#Menampilkan Semua Data dalam Array 
echo ${OCS[@]}

# STRING - LEN kalo di Excel mah
nama="Jayusman"
echo "Jumlah Karakter pada kata $nama" ${#nama}

#INDEX - EXPR
#menghitung jumlahh karakter substring 

kalimat="Pesan Khusus dari Telkomsel"
carihuruf="s"

echo "jumlah huruf $carihuruf pada kalimat $kalimat adalah "
expr index "$kalimat" "$carihuruf"

#Substring Extraction
#menampilkan potongan text dari text tertentu
#fungsi Mid pada Excel
#sama seperti array, perhitungan dimulai dari 0

abjad="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
mulaike=10
sebanyak=5
echo ${abjad:$mulaike:$sebanyak}

#contoh aja nih 
smscontent="Info Gempa Mag:5.8, 11-Mar-19 23:34:29 WIB, Lok:1.13 LU,98.76 BT (63 km BaratDaya PADANGSIDEMPUAN-SUMUT), Kedlmn:85 Km ::BMKG"
#dapatkan posisi tanda titik dua pertama 
#titik dua pertama ada pada huruf ke-15, 

x=`expr index "$smscontent" ':'` # mencari posisi titik dua
y=`expr index "$smscontent" ','` # mencari  posisi tanda koma
z=$((y - x -1)) # menghitung bearapa karakter antara : dan ,


echo ${smscontent:$x:$z}



#Substring Replacement
text="subjek, tagihan layanan atas nama subjek periode Maret 2019 sebesar 200.000"
echo ${text[@]/subjek/Jayusman}  #1. mengganti subjek pertama
echo ${text[@]//subjek/Jayusman} #2. mengganti semua subjek
echo ${text[@]/%subjek/Jayusman} #3. mengganti subjek terakhir
echo ${text[@]// layanan/}       #4. mengapus kata layanan

#Decision Making
#IF satu Kriteria
name="Salmon"
if [ "$name" = "Salma" ]; then
    echo "Ya - Saya $name"
else
    echo "Bukan - Saya $name"
fi

#If Mjulti Kriteria
JenisKelamin="L"
if [ "$JenisKelamin" = "L" ]; then
    echo "Laki - Laki"
elif [ "$JenisKelamin" = "P" ]; then
    echo "Perempuan"
else
    echo "Jenis Kelamin dipertanyakan"
fi

#If pada Operator Matematika
#perintah lebih kecil dari -lt lower then
#comparison    Evaluated to true when
#$a -lt $b    $a < $b
#$a -gt $b    $a > $b
#$a -le $b    $a <= $b
#$a -ge $b    $a >= $b
#$a -eq $b    $a is equal to $b
#$a -ne $b    $a is not equal to $b
#$a != $b    $a is different from $b

a=12
b=25
if [ "$a" -lt "$b" ]; then
    echo "benar"
else
    echo "salah"
fi

# case
mycase=4
case $mycase in
    1) echo "You selected bash";;
    2) echo "You selected perl";;
    3) echo "You selected phyton";;
    4) echo "You selected c++";;
    5) exit
esac

mytim=(Aningga Jayusman Wira Kuncoro)
for i in ${mytim[@]} ; do
    echo "Nama saya adalah $i"
done

#while
qty=12
while [ $qty -gt 0 ]; do
  echo "Nomor: $qty"
  qty=$(($qty - 1))
done

#until
jml=1
batas=12
until [ $jml -gt $batas ]; do
    echo "Nomornya : $jml"
    jml=$(($jml + 1))
done

fdsafsda

bash

f1() {
    [ -s shufmusic_list.tmp.txt ] || ( printf "t" ; return 1 )
}

f2() {
    [ -s shufmusic_list.tmp.txt ] || return 1
}

f1
echo f1=$?
f2
echo f2=$?

Execute Bash Shell Online

bash

# Hello World Program in Bash Shell
#!/bin/bash

echo "Bienvenidos a los scripts de Dalma"

read -p "Introduzca la opción que desee > " opcion

case $opcion in

    a) 
        echo "Hola soy la opción a"
        ;;
    b)
        echo "Hola soy la opción b"
        ;;
    *)
        echo "Ninguna de las opciones es correcta"
        ;;
esac

rolldice

bash

#!/bin/bash
# could even do this as an alias.
function rolldice
{
  return ` shuf -i 1-3 -n1 `
}
total=0
rolldice
roll=$?
total=` expr $total + $roll `
echo "First roll was $roll"
rolldice
roll=$?
total=` expr $total + $roll `
echo "Second roll was $roll"
rolldice
roll=$?
total=` expr $total + $roll `
echo "Third roll was $roll"
echo
echo "Total is $total"

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