<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[KunTu2015的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/KunTu2015</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; KunTu2015]]></copyright><item><title><![CDATA[openwrt Json-rpc]]></title><link>https://blog.youkuaiyun.com/KunTu2015/article/details/137692694</link><guid>https://blog.youkuaiyun.com/KunTu2015/article/details/137692694</guid><author>KunTu2015</author><pubDate>Fri, 12 Apr 2024 19:55:28 +0800</pubDate><description><![CDATA[openwrt Json-rpc]]></description><category></category></item><item><title><![CDATA[openwrt uci shell API]]></title><link>https://blog.youkuaiyun.com/KunTu2015/article/details/137107463</link><guid>https://blog.youkuaiyun.com/KunTu2015/article/details/137107463</guid><author>KunTu2015</author><pubDate>Thu, 28 Mar 2024 12:21:02 +0800</pubDate><description><![CDATA[config_cb、option_cb、list_cd、config_load、config_foreach、config_get、config_set、config_list_foreach、config_get_bool、append和list_contains()函数使用]]></description><category></category></item><item><title><![CDATA[shell扩展修饰符使用]]></title><link>https://blog.youkuaiyun.com/KunTu2015/article/details/136941186</link><guid>https://blog.youkuaiyun.com/KunTu2015/article/details/136941186</guid><author>KunTu2015</author><pubDate>Fri, 22 Mar 2024 14:52:49 +0800</pubDate><description><![CDATA[${var:-world}

若var未定义,则表达式的值为world,var的值为null

若var已定义且为空,则表达是值为world, var的值为null

若var已定义且不为空，则表达式的值为var定义的值

${var:+world}

若var未定义，则表达式的值为null，var的值为null

若var已定义且为空，则表达是值为null，var的值为null

若var已定义且不为空，则表达式的值为world，var的值为定义值

${var:=world}

若var未定义,则表达式]]></description><category></category></item></channel></rss>