man -- format and display the on-line manual pages
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1 = ÃüÁ±ÈÈçcp mv rm µÈ£©
2 = ϵͳµ÷Óà £¨±ÈÈçopenread close µÈ£©
3 = C¿âº¯Êý £¨±ÈÈçprintf £©
4 = É豸ºÍÌØÊâÎļþ
5 ÖÁ 8Ê¡ÂÔ£¬ Ïêϸ˵Ã÷Çë²é¿´£º man man
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man cp == man 1 cp, 1ͨ³£Ê¡ÂÔ
man open == man 2 open, µ«Èç¹ûÓÃman 3openµÄ»°¾Í³ö´í£ºNo entry for open in section 3 of the manual
man printf
×¢Ò⣺Õâ¸ö²»Í¬ÓÚ man 3 printf, ÒòΪÔÚÓû§ÃüÁîÀïÃæÒ²ÓÐÒ»¸ö¿ØÖƸñʽ³ö´íµÄprintfÃüÁËùÒÔÓÅÏÈÏÔʾµÄuser command : printf,
man 3 printf Õâ¸ö²ÅÊÇÕæÕýµÄ²éѯC¿âº¯ÊýÀïµÄprintfº¯Êý
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