我当时正在阅读系统电话和遇到的系统电话,其形式是打开(2),读(2),write(2)等。我试图找到副主页中的2。我首先想到的是它的旗帜设置,而不是我发现的旗帜。请帮助我理解这一点。如果问题太愚蠢,请原谅我。
谢谢 谢谢
“2”是指《Unix手册》的章节,第2节是系统电话,第3节是图书馆电话,对某些电话的区分有些武断,这些电话过去是系统电话(基本上直接呼叫内核),但现在(至少是某些版本的Unix)图书馆功能在呼叫内核之前做了大量工作。
http://en.wikipedia.org/wiki/Man_page#Manual_sections” rel=“no follow”>维基百科网页上有关“人页” 的更多内容。
我认为,这也许只是指它所在人页的章节。例如,像人2一样。
它显示主页的章节
http://en.wikipedia.org/wiki/man_page#manual_sections
如您所见, 2个是系统电话, 开放、读写后所期望的几乎是系统电话 :)
这是有用的, 例如, 如果您想要查找 perl 打开的, 您可以做 :
man open -S 3 # -S switch here is to specify which section in man page
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