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Now there is a PHP website, want to get access to the customer's MAC address, which Danale have any good solution, please tell my brother, thank you. Reply to discussion (solution) ..................This is impossible.All you can get is the client's IP address, browser information.The MAC address is definitely not available unless you make the client-side security control ... No this scenario This is really no way. Unless the execution segment bat or shell script gets Execute the comman

Fg, bg, jobs, , nohup, ctrl + z command I , At the end of a command, you can put the command in the background for execution, such as gftp , 2. ctrl + z You can put a command that is being executed in the foreground to the background, and it is paused and cannot be executed. Iii. jobs View the number of commands currently running in the background The jobs-l option displays the PID of all jobs. jobs can be in running, stopped, and Terminated State, bu

# Include # Include # Include # Include # Include # Include # Include # Include # Include # Define maxn22222# Define MAXM 55555# Define INF 100000000Using namespace std;Int n, m;Int fa [MAXN];Int l [MAXN], r [MAXN], c [MAXN];Int x [MAXN], d [MAXN];Int find (int x){If (fa [x] = x) return x;Int t = find (fa [x]);D [x] ^ = d [fa [x];Fa [x] = t;Return t;}Bool join (int x, int y, int v){Int fx = find (x );Int fy = find (y );If (fx = fy) return (d [x] ^ d [y]) = v );Else{Fa [fx] = fy;D [fx] = d [x] ^

{$ Rsum + = (int) $ code [$ I];}}$ Tsum = $ lsum * 3 + $ rsum;If ($ code [12]! = (10-($ tsum % 10 ))){Die ("the code is bad! ");} // Echo $ Guide [$ code [0];$ Barcode = $ Lstart;For ($ I = 1; $ I {$ Barcode. = $ Lencode [$ Guide [$ code [0] [($ i-1)] [$ code [$ I];}$ Barcode. = $ center;For ($ I = 7; $ I {$ Barcode. = $ Rencode [$ code [($ I)];}$ Barcode. = $ ends;$ Img = ImageCreate ($ lw * 95 + 60, $ hi + 30 );$ Fg = ImageColorAllocate ($ img, 0,

];}}$ Code. = (10-($ odd * 3 + $ even) % 10) % 10;/* Create the bar encoding using a binary string */$ Bars = $ ends;$ Bars. = $ Lencode [$ code [0];For ($ x = 1; $ x {$ Bars. = $ Lencode [$ code [$ x];}$ Bars. = $ center;For ($ x = 6; $ x {$ Bars. = $ Rencode [$ code [$ x];}$ Bars. = $ ends;/* Generate the Barcode Image */$ Img = ImageCreate ($ lw * 95 + 30, $ hi + 30 );$ Fg = ImageColorAllocate ($ img, 0, 0, 0 );$ Bg = ImageColorAllocate ($ img, 255

vmlinuz-2.6.32-358.el6.i686.bz2********************************************************Find. -name x.txt |cpio-cov >/tmp/x.cpio will find x.txt backup to/tmp/x.cpioCpio--ABSOLUTE-FILENAME-ICVU *****************************************************1. Making Yum SourceMkdir-p/mnt/cdromMount-o loop/usr/local/rhel-server-6.4-i386-dvd.iso/mnt/cdrom/(or mount the mirrored disc,Locate the mounted disc via df-m, such as/DEV/SR1, and then execute Mount-o loop/dev/sr1/mnt/cdrom)Cd/etc/yum.repos.dMkdir-p B

FG, BG, Jobs, , CTRL + Z are all related to system tasks, although these commands are largely not needed now, but they are also usefulOne. is most often usedThis is used at the end of a command, you can put this command in the background to executeTwo. CTRL + ZYou can put a command that is executing in the foreground in the background and pauseThree. JobsSee how many commands are currently running in the backgroundFour. FgMove commands in the backgro

the upper-right corner of the component; RELX: The component's x-coordinate relative to the window, which should be a decimal between 0-1, rely: The component's y-coordinate relative to the window, a decimal between 0-1, and width : the component's breadth; HEITHT: The height of the component; relwidth: The component is relative to the width of the window, 0-1; relheight: The height of the component relative to the window, 0-1;　　　　　5, use

Piping and "-"Tar cvf /home | Tar xvf-Use-to replace stdout stdinThe difference between this and the pipeline is that the pipeline is the output character stream, which is considered the previous file.Tee Dual Guide -A Accumulate writes to File two redirect ls | Tee A.txtdesktopdownloadsdropboxgoagentworkcat A.txt......ls | Tee a.txt > B.txtJobsCTRL + Z: The task is paused ctrl+y: only when the process attempts to read input from the terminal is

.");} $lsum = 0; $rsum = 0; For ($i =0 $i { if ($i% 2) { $odd + + $ncode [$x] $lsum + + (int) $code [$i]; }else{ $rsum + + (int) $code [$i]; } } $tsum = $lsum *3 + $rsum; if ($code [a]!= (10-($tsum% 10)) { Die ("The Code is bad!"); } echo $Guide [$code [0]];$barcode = $Lstart;For ($i =1 $i {$barcode. = $Lencode [$Guide [$code [0]][($i-1)]] [$code [$i]];}$barcode. = $center;For ($i =7 $i {$barcode. = $Rencode [$code [($i)]];}$barcode. = $ends;$img = Imagecreate ($lw *95+60,

');$ends = ' 101 '; $center = ' 01010 ';/* upc-a must be digits, we compute the checksum. */if (strlen ($code)!=) {die ("upc-a must be digits.");}/* Compute the EAN-13 Checksum Digit * *$ncode = ' 0 ' $code;$even = 0; $odd = 0;For ($x =0 $x if ($x% 2) {$odd + = $ncode [$x];} else {$even + = $ncode [$x];}}$code. = (($odd * 3 + $even)% 10))% 10;/* Create the bar encoding using a binary string */$bars = $ends;$bars. = $Lencode [$code [0]];For ($x =1 $x $bars. = $Lencode [$code [$x]];}$bars. = $cen

Verification Code function Upcabarcode ($code) { $LW = 2; $hi = 100; $Lencode = Array (' 0001101 ', ' 0011001 ', ' 0010011 ', ' 0111101 ', ' 0100011 ', ' 0110001 ', ' 0101111 ', ' 0111011 ', ' 0110111 ', ' 0001011 '); $Rencode = Array (' 1110010 ', ' 1100110 ', ' 1101100 ', ' 1000010 ', ' 1011100 ', ' 1001110 ', ' 1010000 ', ' 1000100 ', ' 1001000 ', ' 1110100 '); $ends = ' 101 '; $center = ' 01010 '; /* upc-a must be digits, we compute the checksum. */ if (strlen ($code)!=) {die ("upc-a must b

FG, BG, Jobs, , CTRL + Z are all related to system tasks, although these commands are largely not needed now, but they are also usefulOne. is most often usedThis is used at the end of a command, you can put this command in the background to executeTwo. CTRL + ZYou can put a command that is executing in the foreground in the background and pauseThree. JobsSee how many commands are currently running in the backgroundFour. FgMove commands in the backgro

Background:Recently in the implementation of some long-time procedures, always accidentally forgot to enter the ' ', the end of the terminal is stuck there, it is depressedA new terminal was always opened in the past.Today, look at "Bird Brother's Linux private dishes", when the introduction of vim introduced a ctrl-z command can be the current program cut into the background, very useful! But how do you cut it back? Search, see below:-----------reprinted from: http://blog.chinaunix.net/uid-102

% overtime. Judging from my experience that this is a mathematical problem, let's analyze the key information in the topic description and see if there is any mystery. Small octopus can only be moved to 4 * x + 3 or 8 * x + 7, then we think F (x) =4 * x + 3, g (x) =8 * x + 7. The key part arrived, I stare two eyes for a long time, finally found1. F (g (x)) = g (f (x)) We can assume that the final movement of the small octopus is a string that can be expressed in

Turn from: http://blog.csdn.net/fengyifei11228/article/details/5737371 http://idas643.blog.163.com/blog/static/167104838201341493846584/ First, the background process Management command FG, BG, Jobs, , CTRL + Z, CTRL + C, CTRL + \, CTRL + D1, At the end of a command, you can put this command in the background, such as GFTP,2, CTRL + ZA command that is executing in the foreground can be placed in the background and paused and not executed3. JobsSee ho

Question: Ctrl-z and ctrl-c difference? Reply: Ctrl-z and Ctrl-c are both interrupt orders, but their roles are different. Ctrl-c is the execution of a mandatory interrupt program, And the ctrl-z is to break the task, but this task is not over, he is still in the process he just maintained a suspended state, the user can use the FG/BG operation to continue the task of the foreground or the background, FG co

Oracle provides a new pseudo-column in 10g: Connect_by_isleaf, which allows you to determine whether the current record is a leaf node of a tree. Here is a description of how to implement the corresponding function in 9i. First, construct an example: Sql> CREATE TABLE t_tree (ID number PRIMARY KEY, father_id number, NAME VARCHAR2 (30)); Table has been created. Sql> INSERT into T_tree VALUES (1, 0, ' A '); 1 lines have been created. Sql> INSERT into T_tree VALUES (2, 1, ' BC '); 1 lines have be

24, pipe and job control, shell variables, environment variable configuration fileOne, pipe and operation controlPipe Break: | Indicates that the contents of the previous file output are passed to the following command.|grep: Filter, specify the keyword command. |grep ' AAA '.Job ControlCTRL + Z: Pauses a task. It is equivalent to placing the current task in the background, using the FG command to recall the task.

LinuxCtrl + zjobsbgfg usage and differences 1. amp; this is most often used at the end of a command, you can run this command in the background. 2. ctrl + z. You can run a command in the foreground on the background, pause. 3. run jobs to check the number of Linux Ctrl + z jobs bg fg running in the background. 1. This command is most often used at the end of a command, you can run this command in the background. 2. ctrl + z. You can run a command in