ÇëÎÊ£¬ÔõôÔÚÂÛ̳ÇóÖú£¿linuxºÍcygwinµÄ
ÓÐÁ½¶Î´úÂ룺
#!/bin/sh
if [ $#=0 ]
then
echo "Name not provided"
else
echo "You name is $1"
fi
#!/bin/sh
if [ $#=0 ]; then echo "Name not provided"
else echo "You name is $1"
fi
Ãû×ÖΪmypgm1
µÚÒ»¶Î´úÂëÔÚcygwinϲ»ÄÜÕýÈ·ÔËÐÐ
±¨´í£º
mypgm1: line 2: [: missing `]'
mypgm1: line 5: $'\r': command not found
µÚ¶þ¶Î´úÂë¾Í¿ÉÒÔÔËÐÐÁË
µ«ÊÇÁ½¶Î´úÂëÔÚ´¿linuxµÄ»·¾³¶¼ÄÜÔËÐС£
ÇëÎÊÕâÊÇÓï·¨²»¼æÈݵÄÎÊÌâÂð£¿
cygwinµÄÓï·¨ÒªÇóÊÇ·ñ±Èlinux¸üÑϸñ£¿==ÔÚcgywinÏÂÄÜÔËÐеĴúÂëÔÚlinuxÀïÃæÒ»¶¨ÄÜÔËÐУ¬·´Ö®²»È»
Ïà¹ØÎĵµ£º
1. HCI²ãÐÒé¸ÅÊö£º
HCIÌṩһÌ×ͳһµÄ·½·¨À´·ÃÎÊBluetoothµ×²ã¡£ÈçͼËùʾ£º
´ÓͼÉÏ¿ÉÒÔ¿´³ö£¬Host Controller Interface(HCI) ¾ÍÊÇÓÃÀ´¹µÍ¨HostºÍModule¡£Hostͨ³£¾ÍÊÇPC£¬ ModuleÔòÊÇÒÔ¸÷ÖÖÎïÀíÁ¬½ÓÐÎʽ£¨USB,serial,pc-cardµÈ£©Á¬½Óµ½PCÉϵÄbluetooth Dongle¡£
ÔÚHostÕâÒ»¶Ë£ºapplication,SDP,L2capµÈÐÒé ......
Service Discovery Protocol(SDP)ÌṩһÖÖÄÜÁ¦£¬ÈÃÓ¦ÓóÌÐòÓз½·¨·¢ÏÖÄÄÖÖ·þÎñ¿ÉÓÃÒÔ¼°ÕâÖÖ·þÎñµÄÌØÐÔ¡£
·þÎñ·¢ÏÖÐÒé(SDP»òBluetooth SDP)ÔÚÀ¶ÑÀÐÒéÕ»ÖжÔÀ¶ÑÀ»·¾³ÖеÄÓ¦ÓóÌÐòÓÐÌØÊâµÄº¬Ò⣬·¢ÏÖÄĸö·þÎñÊÇ¿ÉÓõĺÍÈ·¶¨ÕâЩ¿ÉÓ÷þÎñµÄÌØÕ÷¡£SDP¶¨ÒåÁËbluetooth client·¢ÏÖ¿ÉÓÃbluetooth server·þÎñºÍËüÃǵÄÌØÕ÷µÄ·½·¨¡£ ......
linuxÖÐselect()º¯Êý·ÖÎö
SelectÔÚSocket±à³ÌÖл¹ÊDZȽÏÖØÒªµÄ£¬¿ÉÊǶÔÓÚ³õѧSocketµÄÈËÀ´Ëµ¶¼²»Ì«°®ÓÃSelectд³ÌÐò£¬ËûÃÇÖ»ÊÇϰ¹ßдÖîÈçconnect¡¢accept¡¢recv»òrecvfromÕâÑùµÄ×èÈû³ÌÐò£¨Ëùν×èÈû·½Ê½block£¬¹ËÃû˼Ò壬¾ÍÊǽø³Ì»òÊÇÏß³ÌÖ´Ðе½ÕâЩº¯Êýʱ±ØÐëµÈ´ýij¸öʼþµÄ·¢Éú£¬Èç¹ûʼþûÓз¢Éú£¬½ø³Ì»òÏ߳̾ͱ»×èÈû£¬º ......
linuxϵÄÎļþ½á¹¹£¬¿´¿´Ã¿¸öÎļþ¼Ð¶¼ÊǸÉÂðÓõÄ
/bin ¶þ½øÖÆ¿ÉÖ´ÐÐÃüÁî
/dev Éè±¸ÌØÊâÎļþ
/etc ϵͳ¹ÜÀíºÍÅäÖÃÎļþ
/etc/rc.d Æô¶¯µÄÅäÖÃÎļþºÍ½Å±¾
/home Óû§Ö÷Ŀ¼µÄ»ùµã£¬±ÈÈçÓû§userµÄÖ÷Ŀ¼¾ÍÊÇ/home/user£¬¿ÉÒÔÓÃ~user±íʾ
/lib ±ê×¼³ÌÐòÉè¼Æ¿â£¬Óֽж¯Ì¬Á´½Ó¹²Ïí¿â£¬×÷ÓÃÀàËÆwindowsÀïµÄ.dllÎ ......
·find path -option [ -print ] [ -exec -ok command ] {} \;
#-print ½«²éÕÒµ½µÄÎļþÊä³öµ½±ê×¼Êä³ö
#-exec command {} \; -----½«²éµ½µÄÎļþÖ´ ......