linux shell

Linux shell BASICS (7) and Linux shell BasicsVII. Process Control Condition judgment control in the bash script-[] ([] expression is true) (execute the following command when the result of the front side is true) | (if-case loop control-while-utile-for-break-continue # [abc] # echo $? 0 (true) # [] # echo $? 1 (false)

--book author Shenmon reprint please specify the source Content Introduction Objective What is a shell? Our first shell script Run the shell script Summarize Part V Third lesson preview: variable in hand, shell not worry 1. PrefaceThe previous lesson is a

Linux Shell series (15th) Shell function introduction, linuxshell This article is part 15 of the Linux Shell series. For more Linux Shell series tutorials, see:

[Shell series] common Linux Shell skills and shelllinux skills In recent daily work, we often deal with Linux servers, such as Oracle performance optimization and resource utilization monitoring of our data collection servers, debug server code and solve problems such as efficiency and stability. Therefore, the

2015-05-08 00:15 3896 people read review (US) Collection report This article has been included in:Classification:Advanced Software Development (419) Author of similar articlesX unix/linux Miscellaneous (118) Author of similar articlesX Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.In this era, we write some books, but also just to make some money, basically is a list of some k

playing Linux does not know the shell, that is, do not understand Linux. This statement is enough to witness the shell's position in Linux operations. Always want to write down the shell, but always do not know how to write, not because the

(after waking up for a nap, the mind is particularly clear, so to organize a piece of Cao classmate's yesterday answers the ^_^, the process of collecting information, but also the process of learning)Background:Yesterday quickly off work, every time to catch the suburban bus Cao classmate will run off on time, but it is almost 7 o'clock, Cao classmate still indifferent in the seat, this is abnormal, after a small meeting, Cao classmate ran over.Cao Classmate : I made a mistake ~ ~ ~ a

This article is part of the Linux Shell Series Tutorial (eight), more shell tutorials: Linux Shell Tutorials In previous: Linux Shell series Tutorial (vii)

This article is part (iii) of the Linux Shell Series tutorial, more on the Shell Tutorial: Linux Shell Series Tutorials The shell is an advanced scripting class language and also supports custom variables. Today we will introd

Linux Shell series (12) Shell until loop, shelluntil This article is Part 12 of the Linux Shell series tutorials. For more Linux Shell tutorials, see the

Linux Shell wildcards, escape characters, metacharacters, special characters, shell escape1. linux shell wildcard (wildcard) Wildcards are processed by shell (not by the command statements involved, but we have not found any intro

1. Linux Scripting Basics 1.1 Basic Introduction to grammar 1.1.1 Start The program must start with the following line (must be on the first line of the file): #!/bin/sh The symbolic #! is used to tell the system that the parameters behind it are the programs used to execute the file. In this example we use/BIN/SH to execute the program. When you edit a good script, you must also make it executable if you want to execute the script. To make the

Q: What is a shell and what is a shell script?A:shell is a program written in C, which is a bridge between the user and the Linux operating system. The user can either enter command execution or use shell scripting to do more complicated operations. It is the general designation of command Language, command interpreter

Monitor linux traffic for shell and linux traffic for shell If you want to view linux traffic in real time and do not want to go to a third-party tool, you can directly write and run it! System: centos 6.5 Principle: Get the traffic from/proc/net/dev, and then get the traffi

Here I will first describe what a shell is, and then introduce my first shell program and summarize the experience from it. First, what is the shell Before talking about my shell program, I would like to talk to you about what is shell, I believe that the word

This article is part of the Linux Shell Series Tutorial (11), more Linux shell tutorials: Linux Shell Tutorials In the previous Linux Shell