linux output

The shell can often be seen: 1>/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

Operating System Reading Report-Introduction to Real-Time Linux Feifei (98132194) Abstract: This article makes a simple analysis on a real-time Linux instance nmt rt-Linux, and points out the role of Linux in general real-time operating

On the first, straight hit Linux:12 asked 1. What is Linux? Linux is an exotic operating system that is born on the web, growing up on the web, and ripe for networking. In the 1991, Finnish college student Linus Torvalds The idea of developing a

Before we know about redirects, let's take a look at the Linux file descriptor. Linux file Descriptor: Can be understood as a Linux trace open file, and the allocation of a number, this number is similar to the C language operation of the file when

This article is part of the Linux Shell Series Tutorial (16), more Linux shell tutorials: Linux Shell Tutorials The output and input redirection in the shell is a feature that is often used in the use, and is very useful for you to introduce the

What is the difference between this command and 2>&1 >/dev/null when you find a statement in the shell script that >/dev/null 2>&1 has not previously understood the purpose of this command? The emphasis of these two commands and the shell input and

First, choose the appropriate Linux distributionWhen it comes to Linux distributions, too many, probably no one can give an accurate number, but one thing is to be sure, Linux is becoming more and more prevalent, faced with so many Linux

Dedicated to beginners: How to learn Linux operating systemFirst, choose the appropriate Linux distributionWhen it comes to Linux distributions, there are too many, and maybe no one can give an accurate number, but one thing is thatLinux is becoming

This article is reproduced in the original link http://www.cnblogs.com/chengmo/archive/2010/10/20/1855805.htmlBefore we get to the redirect, let's take a look at the Linux file descriptor.Linux File Descriptor : Can be understood as a Linux trace

Line Speed Concept Many people misunderstand this line-speed concept. The so-called wire speed ability is the router/switch is like a wire. And this, is impossible. One of the concepts that should be considered is latency. Packet into the router or