Bash Online Compiler

Run Bash scripts online with our shell scripting environment. Perfect for system administration, automation tasks, and learning shell scripting.

bash Online Compiler

#!/bin/bash

echo "Hello, World!"
echo "Welcome to Bash Online Compiler"

# Variables
language="Bash"
version="5.0"
is_powerful=true

echo "Language: $language"
echo "Version: $version"
echo "Is powerful: $is_powerful"

# Arrays
fruits=("apple" "banana" "orange" "grape" "kiwi")
echo "Fruits: ${fruits[@]}"

# Loops
echo "Fruit list with index:"
for i in "${!fruits[@]}"; do
    echo "[$i] ${fruits[$i]}"
done

# Conditional statements
number=42
if [ $number -gt 30 ]; then
    echo "$number is greater than 30"
elif [ $number -eq 30 ]; then
    echo "$number equals 30"
else
    echo "$number is less than 30"
fi

# Functions
greet() {
    local name=$1
    local time=$2
    echo "Hello, $name! Good $time!"
}

greet "Developer" "morning"

# String operations
text="Bash scripting is awesome"
echo "Original text: $text"
echo "Length: ${#text}"
echo "Uppercase: ${text^^}"
echo "Lowercase: ${text,,}"
echo "Substring (0-4): ${text:0:4}"

# File operations (simulated)
echo "Creating temporary files..."
temp_dir="/tmp/bash_demo"
mkdir -p $temp_dir

echo "This is a test file" > $temp_dir/test.txt
echo "Line 2 of the file" >> $temp_dir/test.txt
echo "Line 3 of the file" >> $temp_dir/test.txt

echo "File contents:"
cat $temp_dir/test.txt

echo "File info:"
wc -l $temp_dir/test.txt

# Command substitution
current_date=$(date)
echo "Current date: $current_date"

current_user=$(whoami)
echo "Current user: $current_user"

# Arithmetic operations
a=15
b=7
sum=$((a + b))
product=$((a * b))
division=$((a / b))
remainder=$((a % b))

echo "Arithmetic operations:"
echo "$a + $b = $sum"
echo "$a * $b = $product"
echo "$a / $b = $division"
echo "$a % $b = $remainder"

# Case statement
day="Monday"
case $day in
    "Monday")
        echo "Start of the work week!"
        ;;
    "Friday")
        echo "TGIF!"
        ;;
    "Saturday"|"Sunday")
        echo "Weekend!"
        ;;
    *)
        echo "Regular weekday"
        ;;
esac

# Process information
echo "Process information:"
echo "Script PID: $$"
echo "Number of arguments: $#"

# Environment variables
echo "Environment info:"
echo "Home directory: $HOME"
echo "Current path: $PWD"
echo "Shell: $SHELL"

# Advanced features
# Read from array and process
echo "Processing fruits:"
for fruit in "${fruits[@]}"; do
    length=${#fruit}
    if [ $length -gt 5 ]; then
        echo "$fruit is a long name ($length characters)"
    else
        echo "$fruit is a short name ($length characters)"
    fi
done

# Function with return value
calculate_square() {
    local num=$1
    local result=$((num * num))
    echo $result
}

echo "Squares:"
for i in {1..5}; do
    square=$(calculate_square $i)
    echo "$i^2 = $square"
done

# Cleanup
rm -rf $temp_dir
echo "Cleanup completed"

echo "Bash script execution completed successfully!"

Output

Click "Run" to execute your code and see the output here...

#!/bin/bash

echo "Hello, World!"
echo "Welcome to Bash Online Compiler"

# Variables
language="Bash"
version="5.0"
is_powerful=true

echo "Language: $language"
echo "Version: $version"
echo "Is powerful: $is_powerful"

# Arrays
fruits=("apple" "banana" "orange" "grape" "kiwi")
echo "Fruits: ${fruits[@]}"

# Loops
echo "Fruit list with index:"
for i in "${!fruits[@]}"; do
    echo "[$i] ${fruits[$i]}"
done

# Functions
greet() {
    local name=$1
    local time=$2
    echo "Hello, $name! Good $time!"
}

greet "Developer" "morning"

# String operations
text="Bash scripting is awesome"
echo "Original text: $text"
echo "Length: ${#text}"
echo "Uppercase: ${text^^}"
echo "Lowercase: ${text,,}"
echo "Substring (0-4): ${text:0:4}"

# File operations (simulated)
echo "Creating temporary files..."
temp_dir="/tmp/bash_demo"
mkdir -p $temp_dir

echo "This is a test file" > $temp_dir/test.txt
echo "Line 2 of the file" >> $temp_dir/test.txt
echo "Line 3 of the file" >> $temp_dir/test.txt

echo "File contents:"
cat $temp_dir/test.txt

echo "File info:"
wc -l $temp_dir/test.txt

# Command substitution
current_date=$(date)
echo "Current date: $current_date"

current_user=$(whoami)
echo "Current user: $current_user"

# Arithmetic operations
a=15
b=7
sum=$((a + b))
product=$((a * b))
division=$((a / b))
remainder=$((a % b))

echo "Arithmetic operations:"
echo "$a + $b = $sum"
echo "$a * $b = $product"
echo "$a / $b = $division"
echo "$a % $b = $remainder"

# Process information
echo "Process information:"
echo "Script PID: $$"
echo "Number of arguments: $#"

# Environment variables
echo "Environment info:"
echo "Home directory: $HOME"
echo "Current path: $PWD"
echo "Shell: $SHELL"

# Function with return value
calculate_square() {
    local num=$1
    local result=$((num * num))
    echo $result
}

echo "Squares:"
for i in {1..5}; do
    square=$(calculate_square $i)
    echo "$i^2 = $square"
done

# Cleanup
rm -rf $temp_dir
echo "Cleanup completed"

echo "Bash script execution completed successfully!"

Bash Features

Bash 5.0 shell environment
File operations and I/O
Variables and arrays
Control structures and functions
Command substitution and pipes

About Bash Scripting

Bash (Bourne Again Shell) is a powerful command-line interpreter and scripting language for Unix-like operating systems. It's essential for system administration and automation tasks.

Bash scripts allow you to automate repetitive tasks, manage system configurations, and create complex workflows by combining multiple commands and control structures.

Use our Bash online compiler to learn shell scripting, practice system administration tasks, or test automation scripts without needing a local Unix environment.