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Python implements three lines of code to solve a simple one-dimensional equation and three lines of python. The example described in this article is that Python uses three lines of code to solve the one-dimensional equation. The code is concise and efficient. The specific usage is as follows: >>> solve("x - 2*x + 5*x - 46*(235-24) = x + 2")3236.0 The function code is as follows: def solve(eq,var='x'): eq1 = eq.replace("=","-(")+")" c = eval(

Because I usually write some small experimental script, every time to write author,description and so very troublesome, then wrote such a script can create their own small script, code as follows, pure personal original, relatively rough, big God do not spray#!/bin/bash#ver=0aut=0tim=0des=1if[$#-lt1];then echo "' Basename$0 ' :-a|--author|-t|-d|-v|-f|--file/path/to/file| -H "exit3fiwhile[$#-ge1]; Docase$1in-v|--version) VER=1 shift;; -H|--HELP) echo "' Basename$0 ' :-a|-- Author|-t|-d|-v|-f|--

User2 is unable to log in, through the control group to restrict the user to log on to the server6. Script Automatic implementation of judgment#!/bin/bashfunctionget_gid () {ldapsearch-xgidnumber-b "cn=$1,ou=group,dc=vxuepin,dc=com" 2>/dev/null|grep "^gidnumber" | awk ' {print$2} '}functionfilter_on_centos5 () { #samples: #nss_base_passwd dc=vxuepin,dc=com?sub?gidNumber=1000 #nss_base_passwd dc=vxuepin,dc=com?sub?| (gidnumber=1000) (gidnumber=1003) cp/etc/ldap.conf/etc/ldap.conf. ' date+%Y%m

The recent period of time should be a lot of adjustments to modify the Nagios monitoring policy so need to re-restart Nrpe, but after Nagios installation is not provided Nrpe startup script, so I wrote a Nrpe for the usual restart:#!/bin/sh#thestartupscriptfornrpe#author:jim#processname:nrped#chkconfig: 23459703#description:Thisisadaemonusedfornrpe Startupmanagementinnagios#sourcefunctionslibraryif[-f/etc/rc.d /init.d/functions];then./etc/rc.d/init.d/functionselif[- f/etc/init.d/functions];then.

#!/bin/bash#author: The Adventures of Tintin (Jacob) #定义数组, save all the possibilities of Punch game= (stone scissors cloth) num=$[random%3]computer=${game[$num]}# Get the punch of a computer by random number # The possibility of a punch is saved in an array, game[0],game[1],game[2] is 3 different possible echo "Please choose your punch gesture according to the following tips" echo "1. Stone "echo" 2. Scissors "echo" 3. Cloth "read-p" Please select 1-3: "person# prompts the user to punch, Acco

(objinstanceofEquals) {Equals equ=(Equals) obj; return This. Name.equals (Equ.name) This. Age = =Equ.age; } return false; } @Override Public inthashcode () {return31 * This. Name.hashcode () + ((Integer) This. Age). Hashcode (); } Public Static voidMain (string[] args) {Equals eq1=NewEquals ("s", 3); Equals EQ2=NewEquals ("s", 3); System.out.println (Eq1.equals (EQ2)); System.out.println

element, adding an array of 1-9 to the element that has no value. for($i= 0;$i -lt9;$i++){ for($j= 0;$j -lt9;$j++){ if(!$SudokuMatrix[$i][$j]){ $SudokuMatrix[$i][$j] = 1..9 }Else{ $SudokuMatrix[$i][$j] = @($SudokuMatrix[$i][$j]) } }}#loop each element, comparing horizontal and vertical data, from removing all possible values. functionGoloop ($arr){ $NEWARR= @($null) * 9 for($i= 0;$i -lt9;$i++){ $NEWARR[$i] =$arr[$i]. Psobject.copy ()}

#installipvsadmrpm-qipvsadm>/dev/ null// Installing the IPVSADM command-line tool If[$?-eq1];thenyuminstall-yipvsadm >/dev/nullfi#definevariableipvsadm= ' Whichipvsadm ' vip=172.16.16.2rs1=172.16.16.3rs2= 172.16.16.4#ifconfigeth0:0vipifconfigeth0:0 $VIP/32broadcast $VIP up# definelvs-dr$IPVSADM-C //Purge rule $ipvsadm-a-t $VIP:3306-slblc //define MySQL Cluster service $ipvsadm-a-t $VIP:3306-r $RS 1:3306-g //Add node to the DR model of the MySQL Clust

: first create two M-files. % [Buyu. m] optimal fishing strategy Problem Function Y = buyu (X) Global A10 A20 A30 A40 total K; Syms K A10; X1 = dsolve ('dx1 =-0.8 * x1', 'x1 (0) = a10 '); T = 1; A20 = Subs (X1 ); X2 = dsolve ('dx2 =-0.8 * X2 ', 'x2 (0) = a20 '); T = 1; A30 = Subs (X2 ); X31 = dsolve ('dx31 =-(0.8 + 0.42 * k) * x31', 'x31 (0) = a30 '); T = 2/3; A31 = Subs (x31 ); X32 = dsolve ('dx32 =-0.8 * x32', 'x32 (2/3) = a31 '); T = 1; A40 = Subs (x32 ); X41 = dsolve ('dx41 =-(0.8 + k) * x41

This article mainly introduces how to implement three lines of code in Python to solve a simple one-dimensional equation, which is suitable for beginners of Python to learn from, you can refer to the example described in this article to use three lines of code to solve the one-dimensional equation. the code is concise and efficient. the usage is as follows: >>> Solve ("x-2 * x + 5 * x-46 * (235-24) = x + 2") 3236.0 The function code is as follows: Def solve (eq, var = 'x'):

files : upload.shpath : $HOME/ggscript/gguploadFunction: The script will not be used directly, to meet other scripts to upload information and design, directly within the script to upload the corresponding file informationHe reads system configuration information in the System Information Profile SysInfoExample[detest#]Ip-mtmyljeyms4xmdeuodykusername-z2dzcg==Password-z2dzxxxxxxPort-mjikPath-l2rhdgexl2dncy9nz3nlcnzlci9kaxjkzwyk[#detest]The above information is encrypted with Base64, ensuring info

#!/bin/bashcheckprocess () {if[" $"="" ]; Thenreturn 1fi process_num= ' Ps-ef | Grep" $"| Grep-v"grep"| WC-l 'if[$PROCESS _num-eq1 ]; Thenreturn 0 Else return 1fi} while[1] ; Do#输入进程名 Echo" $"; Echo" $"; Echo" $"; Checkprocess" $"Checkqq_ret=$?if[$CheckQQ _ret-eq1 ]; Then # Killall-9A. out# exec./A. out#java-cp/home/hadoop/hivestudy/task2-2.0. Jar Com.my.task2.filemoniter/home/hadoop/hivestud

The summation of 1...100Non-recursive: #!/bin/bashreadnumcount=1sum=0val= "" ret= "" while [ $count -le $num ]doif[ $count -eq $num ];thenval= $count else val=${count} ' + ' fi letsum+=countletcount++ret=${ret}${val} doneecho${ret} ' = ' $sum recursion: #!/bin/bashreadnumfunctionadd () { localval=$1localcount=0 localsum=0localnum= $val if[ $val -eq1];then Echo1returnfiarr= $count 1+$ valletval--letcount=$ (add$ val) letsum= $count + $num echo $sum

/etc directory to the/backups directory and name it/backups/ etc-20160613.tar.bz2; (3) If the value of parameter 1 is XZ, use the tar and XZ archives to compress the/etc directory to the/backups directory and name/backups/etc-20160613.tar.xz; (4 ) Any other value, the error compression tool is displayed, and an abnormal exit is performed; #!/bin/bashif[$#-eq1];then case$1in "gzip") tar-zcf/backup/etc-' Date+%F '. tar.gz /etc/*;; "bzip2") tar-j

Recently in the study of shell programming, idle to do nothing, to engage in a small shell. can be used to detect the surviving host of a network segment.1#!/bin/Bash2 #3#Date: the/ A/ -4#blog: www.cnblogs.com/Outline5 #by: Joe6 7 if[$#-lt1] ; Then8 Echo "err, usage:ping.sh ARg"9 Echo "eg:ping.sh 192.168.1"TenExit8 One fi A -ips=" $" - Stat=1 the forIpinch$(seq 1 254) - Do - Ping-C1${IPS}.${IP} >/dev/NULLStat=1||Stat=0 - if[ $Stat-eq1]; Th

- apn|grepmmm_mond;if[[$?-eq1]];thenexit1;else exit0;fi "script" Netstat-apn|grepmmm_mond " interval2 weight -fall3 rise1} vrrp_instancevi_1{statebackup interfaceeth0 virtual_router_id52 #nopreempt priority100 advert_int1 authentication{auth_typepass auth_pass1111 } virtual_ ipaddress{192.168.1.249/24deveth0label eth0:1 } track_interface{ eth0 } track_script{ nbsP;chk_down } debug notify_master "/etc/keepalived/mmm_restart.sh" notify_backup "/et