This is a Bash script for generating a launcher in Linux. It takes command line arguments for the filename, command, description, and path of the launcher. The script is designed to create a launcher in the /usr/local/share/applications/ directory.

create_launcher.bash

#!/bin/bash
# genera un launcher

#
# Folder
#
folder=/usr/local/share/applications/


# Parse command line arguments
while [[ $# -gt 0 ]]; do
    key="$1"
    case $key in
        -f|--filename)
        filename="$2"
        shift
        shift
        ;;
        -c|--command)
        command="$2"
        shift
        shift
        ;;
        -d|--description)
        description="$2"
        shift
        shift
        ;;
        -p|--path)
        path="$2"
        shift
        shift
        ;;
        -i|--icon)
        icon="$2"
        shift
        shift
        ;;
        -h|--help)
        echo "Usage: $0 [OPTIONS]"
        echo "Options:"
        echo "  -f, --filename     Specify the filename*"
        echo "  -c, --command      Specify the command*"
        echo "  -p, --path         If is require a working directory (optional)"
        echo "  -d, --description  Specify the description (optional)"
        echo "  -i, --icon         Specify the icon path (optional)"
        echo "  -h, --help         Show this help message (optionale)"
        exit 0
        ;;
        *)
        echo "Invalid option: $key"
        exit 1
        ;;
    esac
done


# This script generates a new launcher.
echo "Script that generates a new launcher"
# se non sono stati inseriti dei parametri, avvia la versione interattiva
if [ -z "$filename" ] || [ -z "$command" ]; then
    read -p "Enter the filename*: " filename
    read -p "Enter the description[optional]: " description
    read -p "Enter the command*: " command
    read -p "Enter the path (or leave blank for default)[optional]: " path
    read -p "Enter the icon path (or leave blank for default)[optional]: " icon
fi

# verifica che sia solo un file e non un path. in caso di path dai errore ed esce
if [[ $filename == */* ]]; then
    echo "Invalid filename. Please provide only the name without any folder or subfolder references."
    exit 1
fi


# se il filename non ha il .desktop finale, aggiungilo
if [[ ! $filename == *.desktop ]]; then
    filename="$filename.desktop"
fi

if [ -n "$icon" ]; then
    icon_line="Icon=$icon"
else
    icon_line="Icon="
fi

if [ -n "$path" ]; then
    path_line="Path=$path"
else
    path_line=""
fi

if [ -e "$folder$filename" ]; then
    echo "File already exists."
    read -p "File already exists. Do you want to overwrite it? (y/n): " overwrite
    if [[ "$overwrite" =~ ^[yYsS]$ ]]; then
        echo "the file will be overwritten..."
        mv "$folder$filename" "$folder$filename.$(date +%Y%m%d%H%M%S)"
    else
        echo "File not created. Exiting..."
        exit 0
    fi
fi

if [ -z "$filename" ] || [ -z "$command" ]; then
    echo "Filename or command is missing. Exiting..."
    exit 1
fi

# Create the .desktop file
sudo bash -c "cat << EOF > \"$folder$filename\"
#!/usr/bin/env xdg-open

[Desktop Entry]
Version=1.0
Type=Application
Name=$filename
Comment=$description
$path_line
Exec=$command
$icon_line
Terminal=false
Categories=Utility;
EOF"

echo "done!"
sudo chmod +x $folder$filename
echo "creato file in $folder$filename"