format is to use the module you just set to synchronize the file, test is equal to the Rsync directory in the module settings, similar to an alias (here is the format mentioned above, this is the format:rsync [OPTION] ...) [[email protected]] HOST::SRC DEST)Default to use/etc/rsyncd.conf This configuration file, you can also specify the configuration file rsync--daemon--config=/etc/rsyncd2.confThe options available are: rsync--daemon--helpThis article is from the It Exchange Learning blog, so b
commandEight. Network command:52. A Linux command (per day): Ifconfig command53. One Linux command per day: Route command54. One Linux command per day: ping command55. One Linux command per day: traceroute command56. One Linux command per day: netstat command57. One Linux command per day ($): ss command58. One Linux command per day: Telnet command59. One Linux command per day: rcp command60. One Linux command per day: SCP commandOther commands:35. One Linux command per day: ln command36. One Li
each row:Copy Code code example: #who | cut-b3-5,8AngaAngaAngaAngaAngaI look at the B and c no difference, in fact, the two in single-byte characters (letters) are basically the same, and in multibyte characters (Chinese characters) there is a great difference, here is the Chinese character extraction as an example of:Copy Code code example: #vi test.txtMondayTuesdayWednesday#cut-b3 Test.txt???#cut-c3 Test.txtOneTwoThreeIt is not difficult to see from the above example that the-C output is norm
string s: = Fmt. Sprintf ("%.2f", str)//Remove the decimal part after the var end string if dot: = Strings. LastIndex (S, "."); Dot >= 0 {end = S[dot:] s = s[:d ot]} num: = Len (s) var buf bytes.b Uffer J: = 1 for i:=num-1;i>=0;i--{buf. WriteByte (S[i]) if j%3==0 i!=0{buf. WriteString (",")} J + +} res:=buf. String () var r bytes. Buffer//Invert string for I:=len (res) -1;i>=0;i--{R.writebyte (Res[i])} R.writestri Ng (end) return r.string ()}//Exercise 3.12: Write a function that determines wh
for(intK = i * 2 + 1; K //Starting at the left Dial hand node of the I node, which is 2i+1 . if(k + 1 //If the left Dial hand node is small less right operand sub-node, K points to the right child node .k++; } if(Arr[k] > Temp) {//assigns the child node value to the parent node if the child node is larger than the parent node (no swapping)Arr[i] =Arr[k]; I= k;//nodes that hold larger values}Else { Break; }} Arr[i]= temp;//put the temp value in the f
Alias is used in Linux systems to alias commands to simplify very long instructions. The usage is simple:
Alias: View all current aliases
Alias Tmstart = "$CATALINA _home/bin/start.sh": the command alias to start Tomcat
Unalias Tmstart: Remove Tmstart aliases
If you use the alias directive only in Terminal, the alias will expire after Terminal is closed. If you want alias to always exist, you will need to add the alias directive to ~/.BASHRC(Ubuntu) or ~/.bash_profile(MacOS). Of co
The importance of the basics of Java is becoming more and more important, so that there is the value of communication.1. What is the difference between a static variable and a non-static variable?① Allocated Space:A static variable exists in the method area of the virtual machine and has only one copy of that memory space.Non-static variables need to be available through the new out-of-class instance and allocated in the heap memory space, and each new instance of the class has a variable.② the
] =VL; Break; } } if(TOP2 >= 0) {Console.log ("Error:don ' t find out the same sign:" + stack2.slice (0, TOP2 + 1). Join (",")); } Else{console.log (Result.join (", ")); } }());/*chain Table Array Simulation list: Two arrays, an array with corresponding values, an array to be stored relative to the index at the next worthy index, that is, the index table*/ (function () { varNode =function(value, nextnode) { This. Value =value; This. NextNode =Next
[j+ 1] =Data[j]; DATA[J]=Vitem; }}} Console.log (Data.join (", ")); //O (N²)}());(function () { /*Quick Sort Quick-order each round of processing is actually the number of the base of this round, until all the numbers are returned to place. Each exchange is a leap, and the total number of comparisons and exchanges is less. Determines the order in which the base number is correct on both sides. Based on the idea of "dichotomy"*/ vardata = [6, 9, 3, 7, 1, 5, 4,
of the above steps to get the string x^ty^t, that is, the inverse of the string cbafed two parts (CBA and fed) to give reversal, cbafed get DEFABC, formally expressed as (x^ty^t) ^t=yx, which realizes the entire reversal.
C language version:#include Go language version:Package Mainimport ( "FMT") func reversestring (s []byte,from int,to int) { for{ T:=s[from] s[from]=s[ To] s[to]=t from++ to--
Title DescriptionGiven a string, it is required to move several characters in front of the string to the end of the string, such as the string "ABCdef" before the 2 characters ' a ' and ' B ' moved to the end of the string, so that the original string into the string "Cdefab". Write a function that requires an O (n) time complexity for a string operation of length n and an O (1) space complexity.Analysis and Solution One: violence Displacement methodAt first glance, perhaps the first way to thin
Observe the following phenomenon, the cubic of a number, the bitwise accumulation is still equal to itself.1^3 = 18^3 = 512 5+1+2=817^3 = 4913 4+9+1+3=17...Would you please calculate the total number of positive integers, including 1,8,17, that fit within this nature?Please fill in this number, do not fill in any superfluous content or descriptive text.Recursive use is critical because you don't know how many numbers will appear.Package Cube;public class Main { static int count = 0; Publi
View system load Common commands W16:32::15 is the system timeUp to Min is the start-up usage time1 user is the number of users logged inImportant Load average:0.00 0.00 0.00 Load Represents the average load within 1 minutes for 5 minutes and 15 minutes respectively. If it is 0.10, there are 10 processes using the CPU. 10 processes are queued or computed. Determines his load capacity based on the number of CPU cores.How do I check the CPU core count?If the 0 description is 1 cores, if the 1 desc
Shutting down the firewallSelinux=disabledCan be in three different states# Enforcing -SELinux security policy is enforced. Open# Permissive -SELinux prints warnings instead of enforcing. Open do not intercept# Disabled -No SELinux policy is loaded. Off, defaultSELinux is open, you can use the following two commandsThe first command is to query the status of SELinux, which is turned off.The second command is a temporary shutdown.The third command is temporarily opened.Permanently open or close t
The code is as follows:Url= "/VAR/WWW/HTML/RRA/150/9517.RRD/VAR/WWW/HTML/RRA/256/11345.RRD/VAR/WWW/HTML/RRA/150/9518.RRD" fff= ' echo $url |awk ' {printnf} ' for ((i=1;iThe results of the operation are as follows:[Email protected]]# sh get_in2.35g 2016-04-103.69g 2016-04-096.84g 2016-04-08[[email protected]]#Get cacti rrd file daily peak shell
Many of the students with virtual machine in the/ tmp directory when the decompression, will find that the previous mount of this directory space is insufficient, resulting in the next step can not be carried out (I encountered this problem in Vmwaretools decompression) ...In fact,/TMP is space-loaded without having to re-erect the virtual machine!The MOUNT-A command mounts all the file systems specified in the/etc/fstab file, and we can open this file to see what you're loading.## /etc/fstab# C
=" Http://s4.51cto.com/wyfs02/M02/7E/77/wKiom1cA2J2y4Q0fAAAsDYZC888076.png "title=" 3.png " alt= "Wkiom1ca2j2y4q0faaasdyzc888076.png"/>4) test the efficiency of the script, the larger the network segment to be tested, the longer it takes, the more I have tested the range of more than 2,500 hosts.650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/7E/73/wKioL1cA23fiJVDnAABAOT-33Yo281.png "title=" 4.png " alt= "Wkiol1ca23fijvdnaabaot-33yo281.png"/>If you are testing this script to find what
/apache-size 100c-printExample 3: Find a file with a length of more than 10 blocks in the current directory (a piece equals 512 bytes)Find. -size +10-print11. Use the depth option:When you use the Find command, you may want to match all the files and find them in the subdirectory. Use the depth option to enable the Find command to do so. One reason for this is that when you use the Find command to back up a file system to tape, you want to back up all of the files first, followed by the files in
Udev33.4.1 What is Udev33.4.2 Benefits of using Udev33.4.3 Udev Related Terms33.4.4/etc/udev/udev.conf File Details33.4.5 Udev Rules File33.4.6 querying the device information in the UDEV database33.4.7 Restart Udev DaemonThe 34th Chapter Troubleshooting Linux34.1 Recovering master boot Records34.2 Single-user mode34.2.1 Single-User mode introduction34.2.2 hack root user password34.3 Creating a bootable disc34.4 Rescue ModeBrief introduction of 34.4.1 rescue mode34.4.2 into rescue mode34.4.3 us
=wangshaojun////user authenticationSecrets file=/etc/rs.passwd///password file, can be written casuallyThe hosts allow=192.168.1.118////specifies which machines can be connected.[Denny1]Path=/tmp/rsync123Use Chroot=yesMax Connections=4Read Only=yesList=yesUid=rootGid=rootHosts allow=192.168.1.1Any conditions that are not specified later can be///////////////////////////////////////////////////////////////////////////////////////////////1. Save the configuration file.2. Start the configuration fi
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