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The shell can often be seen: >/dev/null 2>1Eg:sudo kill-9 ' ps-elf |grep-v grep|grep $1|awk ' {print $4} ' 1>/dev/null 2>/dev/nullThe result of the command can be defined in the form of a%> output/dev/null represents an empty device fileWhere does the > delegate redirect to,

2-6.Condition judgment. Determine whether a number is positive or negative, or 0. Start with a fixed value, and then modify your code to support the user to enter a value for determination.[Answer]The Code is as follows:A = float (raw_input ("Please input a number ..."))If a = 0:Print "The number you input is Zero"Elif a> 0:Print "The number you input is Positive"Else:Print "This is a negative number" 2-7.L

, so equal to no action, after Operation oldarr3–>[1,2])Oldarr3.splice (–GT;2) (from subscript 1 to delete 1 elements, that is, delete 2, so after deletion oldarr3–>[1])Oldarr3.splice (1,4) –>2 (delete

1. [Programming Questions] programming questions 1 Time limit: 1 seconds Space limit: 32768K P is a given two-dimensional set of planar integer points. Defines a point x in P, which is called "maximum" if x satisfies any point in P that is not in the upper-right area of x (the horizontal ordinate is greater than X). Find out the collection of all "maximum" points

in fact to understand the meaning of 2>1, first of all should know that Linux has three kinds of standard input and output, respectively, Stdin,stdout,stderr, the corresponding number is 0,1,2. STDIN is the standard input, the default from the keyboard to read information; stdout is the standard output, the output output to the terminal by default, that is, the monitor and so on; stderr is the standard erro

from 8 o'clock in the morning to 11.Command:3,15 8-11 * * commandExample 4:3rd and 15 minutes of every two-day 8 o'clock in the morning to 11-point executionCommand:3,15 8-11 */2 * commandExample 5:3rd and 15 minutes of each Monday from 8 o'clock in the morning to 11.Command:3,15 8-11 * * 1 commandExample 6:21:30 restart of SMB per nightCommand:* * * * */ETC/INI

The script is:nohup/mnt/nand3/h2000g >/dev/null 2>1 For 1 More accurate should be the file descriptor 1, and 1 is generally representative of Stdout_fileno, in fact, this operation is a dup2 (2) call. He standard output to All_re

Einstein came up with such a mathematical problem: there is a long ladder, if each step across 2, then the last one, if each step across 3, then the last 2 order, if each step across the 5-order, then the last 4 order, if each step across the 6-order, the last remaining 5 order. Only 7 steps at a time, the end is just the first order of no left. How many steps ar

section, director Wang, director Liu, director Zhang, admin, Criminal investigation Detachment, Secret Service detachment, to patrol detachment, through the investigation detachment, the Family Branch, Foreign Affairs Division ', ' This is the middle of 250,000 records ' Set @i=@i+1 End Go DECLARE @h int Set @h=1 While @hBegin DECLARE @i int Set @i=2002 While @iBegin DECLARE @j int Set @j=0 While @jBegin D

Example: nohup/mnt/nand3/h2000g >/dev/null 2>1 for 1 More accurate should be the file descriptor 1, and 1 is generally representative of Stdout_fileno, in fact, this operation is a dup2 (2) call. He standard output to All_result,

) (built:sep 10 2012 18:41:32)27.Copyright (c) 1997-2010 the PHP Group28.Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend TechnologiesWith Eaccelerator v0.9.6.1, the Copyright (c) 2004-2010 eaccelerator, by Eaccelerator 5. Configuration and Optimization php-fpmPHP-FPM The default configuration file is in $php_home/etc/php-fpm.conf, the following is a description of the commonly used configuration items: 1.

1, stitching stringThe concatenation string is one of the most commonly used string operations and supports three ways to stitch strings in a PHP tutorial. is a dot. Delimiter {} operation, there is also a dot equals. = to operate, the dot equals sign can decompose a longer string into several lines to define, which is more beneficial. 2, replacement stringIn the language of PHP, a function named Substr_re

Tags: Specify output redirection open file and reference Linux also TDE2>1 means that standard error (2) is also directed to the output file of standard output (1).We come to know the following: three standard input and output of Linux, respectively, is Stdin,stdout,stderr, the corresponding number is 0,1,2.STDIN is the standard input, read the information by def

Gdb Learning (1) [version 2] And gdb learning Version 2Overview Gdb is short for GNU debugger and a programming debugging tool. Function 1. Start the program and run the program as needed according to user-defined requirements. 2. The program to be debugged can be stopped at the breakpoint specified by the user (the br

_pagesize;}set {_pagesize = value;}}/**////Generate Cache Keypublic override string Getcachekey (){Const string Keyformat = "Pager-sc:{0}-fc:{1}-wc:{2}-gc:{3}-sc:{4}";Return String.Format (Keyformat, Selectclause, FromClause, Whereclause, Groupclause, Sortclause);}/**////SQL statement that generates the total number of query recordspublic string Generatecountsql

online are mostly 1.x versions. Official jquery Handbook: http://api.jquery.com/ Maintenance ie678 is the opinion headache thing, generally we will load a CSS and JS alone processing. Fortunately, the use of these browsers are gradually reduced, computer-side users have gradually been replaced by mobile users, if there is no special requirements, will generally choose to abandon the ie678 support. More friendly prompt user to upgrade

, for example, the rule of "balance" (The winning player have to is at least, points ahead to win a set) have no power within the present problem.Test instructions: Test instructions good fan, do the problem by enumerating test instructions.The title says two people are playing, each game has a lot of rounds, each round of winning players can get a point. If someone's score is k in a match, the game ends and a game is re-opened.Now give the two people a total score, a, B, ask you whether the sco

1. FaceTime can be used for video telephony via a wireless network. Use a frontal camera for face-to-face conversation, or use a back camera to share people or things around you. To use FaceTime, you need to connect the ipad 2 to the wireless network. The contact you are calling must also have an IOS device or computer that can use FaceTime and is networked. Second Step

(Hdu step 3.1.2) the bone board is paved with squares (simple recursion: calculate the number of solutions to overlay 2 * n grids with a 2*1 bone board), hdu3.1.2 Make an advertisement for yourself before writing a question ~.. Sorry, I hope you can support my CSDN video courses at the following address: Http://edu.csdn.net/course/detail/209 Question:

Program | pagination | display display form: ID1 NAME | ID2 NAME 1 JULIET | 2 SPIRIT 3 BABY | 4 BOY [1] [2] [3] [4] Pages: 1/4 pages