linux uniqÃüÁîÏê½â
uniqÃüÁî
Îļþ¾¹ý´¦ÀíºóÔÚËüµÄÊä³öÎļþÖпÉÄÜ»á³öÏÖÖظ´µÄÐС£ÀýÈ磬ʹÓÃcatÃüÁÁ½¸öÎļþºÏ²¢ºó£¬ÔÙʹÓÃsortÃüÁî½øÐÐÅÅÐò£¬¾Í¿ÉÄܳöÏÖÖظ´ÐС£Õâʱ¿ÉÒÔʹÓÃuniqÃüÁÕâЩÖظ´ÐдÓÊä³öÎļþÖÐɾ³ý£¬Ö»ÁôÏÂÿÌõ¼Ç¼µÄΨһÑù±¾¡£
Óï·¨£º
uniq [Ñ¡Ïî] Îļþ
˵Ã÷£ºÕâ¸öÃüÁî¶ÁÈ¡ÊäÈëÎļþ£¬²¢±È½ÏÏàÁÚµÄÐС£ÔÚÕý³£Çé¿öÏ£¬µÚ¶þ¸ö¼°ÒÔºó¸ü¶à¸öÖظ´Ðн«±»É¾È¥£¬ÐбȽÏÊǸù¾ÝËùÓÃ×Ö·û¼¯µÄÅÅÐòÐòÁнøÐеġ£¸ÃÃüÁî¼Ó¹¤ºóµÄ½á¹ûдµ½Êä³öÎļþÖС£ÊäÈëÎļþºÍÊä³öÎļþ±ØÐ벻ͬ¡£Èç¹ûÊäÈëÎļþÓÓ- ”±íʾ£¬Ôò´Ó±ê×¼ÊäÈë¶ÁÈ¡¡£
¸ÃÃüÁî¸÷Ñ¡ÏÒåÈçÏ£º
- c ÏÔʾÊä³öÖУ¬ÔÚÿÐÐÐÐÊ×¼ÓÉϱ¾ÐÐÔÚÎļþÖгöÏֵĴÎÊý¡£Ëü¿ÉÈ¡´ú- uºÍ- dÑ¡Ïî¡£
- d Ö»ÏÔʾÖظ´ÐС£
- u Ö»ÏÔʾÎļþÖв»Öظ´µÄ¸÷ÐС£
- n Ç°n¸ö×Ö¶ÎÓëÿ¸ö×Ö¶ÎÇ°µÄ¿Õ°×Ò»Æ𱻺öÂÔ¡£Ò»¸ö×Ö¶ÎÊÇÒ»¸ö·Ç¿Õ¸ñ¡¢·ÇÖƱí·ûµÄ×Ö·û´®£¬±Ë´ËÓÉÖƱí·ûºÍ¿Õ¸ñ¸ô¿ª£¨×ֶδÓ0¿ªÊ¼±àºÅ£©¡£
+n Ç°n¸ö×Ö·û±»ºöÂÔ£¬Ö®Ç°µÄ×Ö·û±»Ìø¹ý£¨×Ö·û´Ó0¿ªÊ¼±àºÅ£©¡£
- f n Óë- nÏàͬ£¬ÕâÀïnÊÇ×Ö¶ÎÊý¡£
- s n Ó룫nÏàͬ£¬ÕâÀïnÊÇ×Ö·ûÊý¡£
ÎÒÃÇ¿ÉÒÔͨ¹ýÒÔÏÂÃüÁî½øÐвâÊÔÃüÁî.
1.sort sudoers |uniq
2.sort sudoers |uniq -c
3.sort sudoers |uniq -d
4. sort sudoers |uniq -u
ÆäËûµÄÃüÁîÇë×ÔÐвâÊÔ¡£
Ïà¹ØÎĵµ£º
ÀýÒ»£º·¢ËÍSignaling Packet£º
Signaling CommandÊÇ2¸öBluetoothʵÌåÖ®¼äµÄL2CAP²ãÃüÁî´«Êä¡£ËùÒÔµÃSignaling CommandʹÓÃCID 0x0001.
¶à¸öCommand¿ÉÒÔÔÚÒ»¸öC-frame£¨control frame£©Öз¢ËÍ¡£
Èç¹ûÒªÖ±½Ó·¢ËÍSignaling Command.ÐèÒª½¨Á¢SOCK_RAWÀàÐ͵ÄL2CAPÁ¬½ÓSocket¡£ÕâÑù²ÅÓлú»á×Ô¼ºÌî³äCommand Code£¬Identi ......
ÔÚLinuxÄں˴úÂëÖУ¬ÓÐÒ»¸öÐźŴ¦Àí°ó¶¨Æ÷º¯Êýsignal£¬Ëüµ½ÔÐͶ¨ÒåÈçÏ£¬Í¨¹ýman 2 signal¿ÉÒԲ鿴ÆäÔÐÍ¡£
#include <signal.h>
typedef void (*sighandler_t)(int); (1)
sighandler_t signal(int signum,sighandler_t handler); (2)
µÚÒ»¾äÊÇ°üº¬Í·Îļþ£¬µÚ¶þ¾äÊÇÀàÐͶ¨Ò ......
ÔÚÏò´ó¼ÒÏêϸ½éÉÜlinux±àÒë֮ǰ£¬Ê×ÏÈÈôó¼ÒÁ˽âÏÂLinux½Å±¾ShellÃüÁȻºó½²½âÔÚshell½Å±¾ÖпÉÒÔʹÓÃÈÎÒâµÄunixÃüÁî¡£
Óï·¨»ù±¾½éÉÜ
1.¿ªÍ·
³ÌÐò±ØÐëÒÔÏÂÃæµÄÐпªÊ¼£¨±ØÐë·½ÔÚÎļþµÄµÚÒ»ÐУ©£º
#!/bin/sh
·ûºÅ#!ÓÃÀ´¸æËßϵͳËüºóÃæµÄ²ÎÊýÊÇÓÃÀ´Ö´ÐиÃÎļþµÄ³ÌÐò¡£ÔÚÕâ¸öÀý×ÓÖÐÎÒÃÇʹÓÃ/bin/shÀ´Ö´ÐгÌÐò¡£
µ±±à¼ºÃ ......