linux ini文件读写

[database]
host = localhost
port = 3306
user = admin
password = secret

[logging]
level = info
file = /var/log/app.log

#!/bin/bash

config_file="example.ini"
section="database"
key="host"

value=$(grep -E "^$section[[:space:]]*\$" $config_file | grep -E "^$key[[:space:]]*=" | cut -d'=' -f2-)
echo "$key in $section is $value"

#!/bin/bash

config_file="example.ini"
section="database"
key="host"
value="new_host"

# Check if section exists, if not add it
if ! grep -q "^$section[[:space:]]*\$" $config_file; then
    echo "$section {" >> $config_file
    echo "    $key=$value" >> $config_file
    echo "}" >> $config_file
else
    # Update existing key
    sed -i "/^\[$section\]/,/^\[/ s/^$key=.*/$key=$value/" $config_file
fi

import configparser

config = configparser.ConfigParser()
config.read('example.ini')

host = config['database']['host']
print(f"Host: {host}")

import configparser

config = configparser.ConfigParser()
config['database'] = {'host': 'new_host', 'port': '3306'}

with open('example.ini', 'w') as configfile:
    config.write(configfile)