echo earbuds

Linux of the Echo Command , in the Shell extremely popular in programming , Print variables under the terminal value is often used. , Echo command in the build Shell play an important role in scripting1. command FormatEcho[options] [String]2. Command functionList all subdirectories and files in the destination directory3. Command Parameters- N do not wrap at the end of the lineThe--HELP displays help

Ehco and returnreturn Returned is the status code, function end Return does not return function return value You can return the function return value with echo in front, return the specified function exit status code Echo returns the function return value, the function exit status code is the exit status code of the last command of the functiontest1.sh#!/bin/bashfunctiontest () { echo200 }ret=$ (t

Welcome to Join WEBRTC Learning Group (659922087) to obtain free learning resources, mutual communication and growth. WEBRTC of the Echo Cancellation (AEC, AECM) algorithms mainly include the following important modules: Echo delay estimation, NLMS (normalized minimum mean square adaptive algorithm), NLP (nonlinear filtering), CNG (Comfort noise generation). The General classic AEC algorithm should also inc

Objective:I installed nginx-echo-module The original intention is encountered some time ago, although there are configuration location rules, but in the browser access, there is an error, such as mismatch or do not meet the expected situation, want to know if there is actually a match which location rule, But Nginx log can only record the request URL, so, see echo output is very happy, after all, feel retur

!------------------------------------------The echo command in Linux is used to display a section of characters on the standard output, such as:echo "The echo command test!"This will output "the echo command test!." This line of text!echo "The echo command test!" >a.shThis w

6. Script timed Tasks# Example of job definition:# .------------------------- minute (0 - 59)# | .--------------------- hour (0 - 23)# | | .----------------- day of month (1 - 31)# | | | .------------- month (1 - 12) # | | | | .--------- day of week (0 - 6) # | | | | |# * * * * * user-name command to be executed7. View the UID of the current userroot @kallen :/usr/data/kallendb_backup # ps-ef | grep UID uid pid ppid c stime T

Echo-e "\033[32;49;1m [done] \033[39;49;0m"Output Result:[Done]　　The color of the text terminal can be generated by using the ANSI unconventional character sequence. Example:Echo-e "\033[44;37;5m ME \033[0m COOL"The above command sets the background to blue, foreground white, blinking cursor, output character "ME", then reset screen to default settings, output character "COOL". "E" is an optional option for the command

There are two types of echoes in voice calls:1. Circuit echo (already resolved)2. Acoustic echoTwo echo cancellation modules are designed in the WEBRTC source code:1.AEC (Acoustic Echo canceller): PC side2.AECM (Acoustic Echo Canceller mobile): MobileAECM:Causes of acoustic Echo:The voice of the proximal speaker is pic

-Echo is a command and cannot return a value. Echo can be followed by many parameters, separated by semicolons, such as: echo $myvar 1; Echo 1,2, $myvar, "bold"; -Print is a function that can return a value and can have only one argument. -printf function, format the text after the output, such as: $name = "H

Http://www.linuxidc.com/Linux/2014-12/110463.htm#!/bin/bash#定义颜色的变量Red_color= ' \e[1;31m ' #红Green_color= ' \e[1;32m ' #绿Yelow_color= ' \e[1;33m ' #黄Blue_color= ' \e[1;34m ' #蓝pink= ' \e[1;35m ' #粉红res= ' \e[0m '#需要使用echo-EEcho-e "${red_color}======red Color======${res}"Echo-e "${yelow_color}======yelow Color======${res}"Echo-e "${blue_color}======green Color====

As a walking lake for many years old Chinese medicine, today was ordered to solve a case of the front-end page show slow problem. The status of the problem page is as follows: Apache + PHP Using the Smarty template to output content The final output of the page is large, 80k+ Page execution time is above 500ms Sacrifice a magic weapon xhprof the problem page to do a careful check, found that the page bottleneck is actually a template (compiled) in an ec