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-e ¸Ã¡ºµµÃû¡»ÊÇ·ñ´æÔÚ£¿(³£ÓÃ)
-f ¸Ã¡ºµµÃû¡»ÊÇ·ñΪµµ°¸(file)£¿(³£ÓÃ)
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-b ¸Ã¡ºÎļþÃû¡»ÊÇ·ñΪһ¸ö block device ×°Öã¿
-c ¸Ã¡ºÎļþÃû¡»ÊÇ·ñΪһ¸ö character device ×°Öã¿
-S ¸Ã¡ºµµÃû¡»ÊÇ·ñΪһ¸ö Socket µµ°¸£¿
-p ¸Ã¡ºµµÃû¡»ÊÇ·ñΪһ¸ö FIFO (pipe) µµ°¸£¿
-L ¸Ã¡ºµµÃû¡»ÊÇ·ñΪһ¸öÁ¬½áµµ£¿
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3. Á½¸öµµ°¸Ö®¼äµÄ±È½Ï£¬È磺 test file1 -nt file2
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-ot (older than)ÅÐ¶Ï file1 ÊÇ·ñ±È file2 ¾É
-ef ÅÐ¶Ï file2 Óë file2 ÊÇ·ñΪͬһµµ°¸£¬¿ÉÓÃÔÚÅÐ¶Ï hard link µÄÅж¨ÉÏ¡£ Ö÷ÒªÒâÒåÔÚÅж¨£¬Á½¸öµµ°¸ÊÇ·ñ¾ùÖ¸Ïòͬһ¸ö inode Á¨£¡
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-ne Á½ÊýÖµ²»µÈ (not equal)
-gt n1 ´óÓÚ n2 (greater than)
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//»ñÈ¡×ÓÍøÑÚÂëµÄº¯ÊýQString GetLocalNetMask()
{
int sock_netmask;
char netmask_addr[50];
struct ifreq ifr_mask;
struct sockaddr_in *net_mask;
sock_netmask = socket( AF_INET, SOCK_STREAM, 0 );
if( sock_netmask == -1)
{
perror("create socket failture...GetLocalNetMask\n");
......
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