可以使用 sysstatus --default-config 生成默认配置。

颜色

颜色必须使用反序列化为 colored::Color 的值，请参阅此处的枚举。有效的示例包括 "Black"、"BrightCyan" 和 { "TrueColor": { "r": 3, "g": 4, "b": 255 } }

条件颜色

ConditionalColour 允许根据属性值动态选择文本颜色。每个 ConditionalColour 都有一个默认颜色和零个或多个 ColourLevel，其定义如下

{
    "default_colour": "Green",
    "levels": [
        {
            "min": 0.5,
            "colour": "Yellow"
        },
        {
            "min": 0.8,
            "colour": "Red"
        }
    ]
}

ConditionalColour 通过选择列表中颜色值大于或等于 min 的最远颜色来评估。每个级别的 min 必须随着列表的遍历而增加，否则行为是未定义的。

在以下示例中

• 0.1 => 绿色
• 0.49 => 绿色
• 0.5 => 黄色
• 0.7 => 黄色
• 0.8 => 红色
• 10.0 => 红色

示例配置（带说明）

{
    // [Optional] Configuration for general overview
    "general_info": {
        // ConditionalColour for load average. Comparison value = load / cores.
        "load_avg": {
            "default_colour": "Green",
            "levels": [
                {
                    "min": 0.5,
                    "colour": "Yellow"
                },
                {
                    "min": 0.8,
                    "colour": "Red"
                }
            ]
        },
        // Conditional Colour for memory usage. Comparison value = used / total.
        "memory": {
            "default_colour": "Green",
            "levels": [
                {
                    "min": 0.7,
                    "colour": "Yellow"
                },
                {
                    "min": 0.9,
                    "colour": "Red"
                }
            ]
        },
        // ConditionalColour for CPU frequency. Comparison value = CPU frequency in MHz.
        "cpu_frequency": {
            "default_colour": "Green",
            "levels": [
                {
                    "min": 2000,
                    "colour": "Yellow"
                },
                {
                    "min": 2400,
                    "colour": "Red"
                }
            ]
        }
    },
    // [Optional] Configuration for the storage bars
    "storage": {
        // ConditionalColour for colouring the usage bars of storage usage. Comparison value = used / total.
        "usage_colouring": {
            "default_colour": "Green",
            "levels": [
                {
                    "min": 0.8,
                    "colour": "Yellow"
                },
                {
                    "min": 0.9,
                    "colour": "Red"
                }
            ]
        },
        "exclude_prefixes": [
            "/var/lib/docker/"
        ]
    },
    // [Optional] ConditionalColour for temperature. Comparison value = temperature of component.
    "temperature": {
        "default_colour": "Green",
        "levels": [
            {
                "min": 70,
                "colour": "Yellow"
            },
            {
                "min": 85,
                "colour": "Red"
            }
        ]
    },
    // [Optional] Map of service names to service configurations
    // The ending .service is not needed.
    "services": {
        "docker": {
            // ConditionalColour for memory usage of service. Comparison value = memory usage in bytes.
            "memory_usage": {
                "default_colour": "White",
                "levels": [
                    {
                        "min": 2000,
                        "colour": "Yellow"
                    },
                    {
                        "min": 2400,
                        "colour": "Red"
                    }
                ]
            }
        },
        "ntp": {},
        "ufw": {}
    },
    // [Optional] Configuration for last login section.
    "last_login": {
        // Optionally only include logins which occur before a certain time.
        // Accepts any value which `last --since` accepts e.g. `+5days`, `yesterday`.
        "since": "yesterday",

        // Mapping of usernames to fetch the last logins for to the configuration for that user's last login.
        "users": {
            "pi": {
                // Optionally limit the maximum number of logins shown of the user.
                "max_lines": 4
            },
            "root": {
                // Optionally set the colour of the username.
                "username_colour": "Red"
            }
        }
    }
}

常见问题解答

为什么我的所有 systemd 服务都显示 0B 的内存使用量？

在某些 systemd 安装中，内存会计默认是禁用的。您可以通过取消注释或设置

DefaultMemoryAccounting=yes

在 /etc/systemd/system.conf 中，然后运行 systemctl daemon-reexec 来启用它。
有关更多详细信息，请参阅此 stackoverflow 问题。

替代方案

• motd - yboetz 的 "每日消息" 脚本集合
• rust-motd - "美观、实用的 MOTD 生成，无需运行时依赖" 由 rust-motd 提供

致谢

此程序部分源自 rust-motd，特别是在格式化和处理最后登录解析方面。