abalone shell value

[Seemingly challenging] How does shell obtain the return value in php? for example, the php file returns an array nbsp; PHPcode lt ;? Phpreturnarray (a gt; 1, B gt; 2, c gt; public, d gt;, e gt ;,); [seemingly challenging] How does shell obtain the return value in php? The php file returns an array. PHP cod

A comparison of the numerical values Describe N1–eq N2 As N1–GT N2 Greater than N1–ge N2 Much more than N1–lt N2 Less than N1–le N2 As small as N1–ne N2 Not equal to string comparison Describe STR1 = str2 As Str1! = str2 Not equal to STR1 Less than (must be used by definition)

1. PrefaceAlmost half a year did not write a blog, wasted a long time, work in the chores too much, their own more and more lazy. In order to spur their own growth, or to insist on writing a blog, record their growth.2. Shell Function Introduction　　Grammar:function ] funname [()]{ action; [return int;] }Description(1) can be defined with function fun () or directly fun (), without any parameters.(2) The parameter returns, can display plus: return

Tags: hash macbook hash newline character MacOS ADC method Roo md5sumtoday, I have no intention of discovering that computing MD5 hashes on Linux is not the same as in MacOS:Linux[[email protected] ~]# echo ‘123456‘ | md5sum f447b20a7fcbf53a5d5be013ea0b15af -Mac[[email protected] Notes]$md5 -s 123456 MD5 ("123456") = e10adc3949ba59abbe56e057f20f883eCareful toss, the original is the echo output string will be added by default a newline character '

$1>a[2]?$1=$1-a[2]:$1=a[2]-$1----> 545 greater than 8, so perform 553-8=545$2>a[2]?$2=$2-a[2]:$2=a[2]-$2----> 556 greater than 8, so perform 556-8=548$3>A[2]?$3=$3-A[2]:$3=A[2]-$3----> 32 greater than 8, so perform 32-8=24$4>a[2]?$4=$4-a[2]:$4=a[2]-$4----> 21 greater than 8, so perform 21-8=13Last process third row$1>a[3]?$1=$1-a[3]:$1=a[3]-$1----> 1 less than 2, so perform 2-1=1$2>a[3]?$2=$2-a[3]:$2=a[3]-$2----> 1 less than 2, so perform 2-1=1$3>a[3]?$3=$3-a[3]:$3=a[3]-$3----> 14 greater than 2

Title Link: https://nanti.jisuanke.com/t/27644Main topic:Problem Solving Ideas:Code:1#include 2 #defineLC (a) (a3 #defineRC (A) (a4 #defineMID (A, B) ((A+B) >>1)5 #defineFin (name) freopen (name, "R", stdin)6 #defineFout (name) freopen (name, "W", stdout)7 #defineCLR (arr,val) memset (arr,val,sizeof (arr))8 #define_for (i,start,end) for (int i=start;i9 #defineFast_io Ios::sync_with_stdio (false); Cin.tie (0);Ten using namespacestd; OnetypedefLong LongLL; A Const intn=1e5+5; - Const intinf=0x3f3f

Today, writing scripts, encountering awk script to the shell of the case, the internet Google, found that there are some problems, through the pipeline, through Eval, feeling is very complex. So I thought to try it with read.First, a test file Test.txt is constructed, and the contents are 1 2 3.First try' {print $ $} ' test.txt | Read a b CBut echo $a, found to be empty, failed.Try it." 1 2 3 " | Read a b CYou can't assign a b c to a value.It seems th

"Seemingly challenging" how the shell gets the value of return in PHP Title PHP This file is to return an array PHP Code ' 1 ', ' b ' = ' 2 ', ' c ' = ' public ', ' d ' = ' ', ' e ' = = ', '; > In the shell how to receive this array ah or there is no way ------Solution-------------------- PHP Code [User:root time:07:23:08 path:

Background: defines a function that is different than the number of local and online server clusters, and wants to get the number of distinct clusters. The function return value of the shell and other languages is quite different. Define a functionfunctionname () {Action Contentecho Output Contentreturn value #返回值可有可不有}get the return

Tag: Shell finds the maximum value in an array elementHow does the shell compare the maximum values in all the elements in an array? Such as:array= (111 222 333 444 555 999 888 777 666) How to find the biggest element 999?Idea: Set a value max=${array[0]} that is the first element of the array, then use a For loop, tak

Use of the special variable IFS in shell, and the difference between the value of $ '\ n' and' \ n', shellifs When a for loop is used in shell, the IFS is also used to define the separator. To specify multiple IFS characters, you only need to concatenate them in the value assignment line. As follows: IFS = $ '\ N ':;

#!/bin/bash- function mytest () { echo "arg1 = $" If [$ = "1"]; then return 1 else return 0 fi}if MyTest 2; Then echo "Aaaaaaaaaa" fi Execution Result:Change it a little bit.#!/bin/bash-function mytest (){echo "Arg1 = $"if [$ = "1"]; thenReturn 1Elsereturn 0Fi}If mytest 1; Thenecho "AAAAAAAAAA"Fi---------------------------------------------------------------------------The variables defined in the shell are

:$ md5sum-c LINUXMINT-12-GNOME-DVD-32BIT.MD5Output if the checksum is correct:Linuxmint-12-gnome-dvd-32bit.iso: OKIf the checksum error is output:Linuxmint-12-gnome-dvd-32bit.iso: Failed md5sum: Warning: 1/1 generated checksum mismatch command interpretation: md5-c: Read MD5 checksum from file and checkMessage Digest algorithm MD5 is a hash function widely used in the field of computer security to provide integrity protection for messages. The algorithm's file number is RFC 1321 (R.rivest,mit La

Test 101-le 99101 is less than or equal to 99Similar special symbols are also available.-eq "Judgment is equal"-ge "judgment is greater than or equal to"-lt "judgment is less than"-ne "judgment is not equal to"You can use the command "[]" instead of the test command as a logical expression#! /bin/bashecho if 101 smaller than 100if test 101-le 100then echo trueelse echo Falsefiecho if 101 bigger than 100 If [101-gt]then echo trueelse echo Falsefi　　1 [[email protected]

There are n kinds of methods, awk, sad, grep, cut ...The above several ways do not write, just write two less commonly used to.Say less nonsense, directly on the code:Cat a.txt aa.gif=aaaa.gifbb.gif=bbbb.gifcc. gif=cccc.gifMethod One:#!/bin/sh while read line do k=${line%=*} v=${line#*=} Echo " $k: $v"done Operation Result:aa.gif: aaaa.gifbb.gif: bbbb.gifcc. gif: cccc.gifMethod Two:#!/bin/shIFS='=' while read K v do echo"$k : $v" Done View CodeOperation Result:aa.gif

#!/bin/bash#Remove the mer.*_ in file name is all of the files in a dirfunctionGetdir () { forElementinch' ls $` DoDir_or_file= $"/"$element if[-D$dir _or_file] then Getdir$dir _or_file Else #deal with all file in DirMv$dir _or_file' Echo$dir _or_file|sed ' s/mer.*) _//G ' fi done}#Check the input argsif(($#ThenEcho"Please input the dir of calibration images"Exitfiroot_dir= $Getdir$root _dir#Create the dir name using TimestrResult_dir="./result_of_"$ (Date +%y:%m:%d-%h:%