advanced bash scripting guide

http://tldp.org/LDP/abs/html/Advanced Bash Scripting Programming GuideAn in-depth exploration of scripting language artThis tutorial does not assume previous scripting or programming knowledge, but progresses quickly toward an intermediate/

　　At the beginning of the new year, the knowledge base of open source class is online. Early on, the Linux command Encyclopedia/bash Reference, Advanced Bash Scripting Programming Guide, is available in two series. Other materials are on the line.Among them, the

Advanced Bash-scripting Guide (19th): maximum common divisor of two integers, bashscripting The example selected in this article is from the book "Advanced Bash-scripting Gudie", transl

Advanced Bash-scripting Guide (17): use more to view gzip files, The example selected in this article is from the book "Advanced Bash-scripting Gudie", translated by Yang chunmin Huang

Advanced Bash-scripting Guide (15th): Test broken link files (broken link ), The example selected in this article is from the book "Advanced Bash-scripting Gudie", translated by Yang ch

Advanced Bash-scripting Guide (18): [[] and [] some special cases, bashscripting The example selected in this article is from the book "Advanced Bash-scripting Gudie", translated by Yan

Advanced Bash Script Programming Guide-general Linux technology-Linux programming and kernel information. Read the following for details. Advanced Bash Script Programming Guide Main directory Part 1. Warm up 1. Why use shell pro

File test operations-advanced bash Script Programming Guide /Span> 7.2 file testing operations----------------Returns true if...-E file exists-File a exists.This option has the same effect as-e, but it has been discarded and is not encouraged.-F file is a regular file (not a directory or a device file)-S file length is not 0-D files are directories.-File B is a b

I like a wordThe only-to really learn scripting are to write scriptsThe only way to learn a script is to write a scriptBetter command-line parameter detectione_wrongargs=85 # non-numerical argument (Bad argument format).41 ## case "$" in# "") lines=50;;# *[!0-9]*) echo "Usage: ' basename $ ' lines-to-cleanup";No number in the middle of the argument, invalid argument# exit $E _wrongargs;;# *) lines=$1;;# ESACMore Efficient directory detection3 # Cd/var

Bash scripting one variable, variable typeShell Programming:Compilers, interpretersProgramming languages: Machine language, assembly language, advanced languagesStatic language: Compiled languageStrongly typed (variable) languageconvert into executable format in advanceC,C + +,JAVA,C #Dynamic Language: interpreted language On the fiy Weak typeEdge interpretatio

Overview:Overview:This section describes the array of shell scripting in Linux, advanced string processing, advanced variables, and configuring the user's environment.One, function and positional parameter extension1. TheShift command implements the jump in the position parameter, which squeezes the leftmost parameter650) this.width=650; "src=" Http://s1.51cto.co

Shell Scripting Learning GuideThe following eight points can not be said to be your shell Scripting Learning Guide de all, at least let you write a reliable shell script.1. Specify bashThe first line of the shell script, what should be after #!?If you ask someone about this question, the answers may vary from one person to another. I've seen/usr/bin/env

myscript.sh You can use Set-o verbose and set-o xtrace to permanently specify-V and-O in the script header. This is useful when executing a script on a remote machine, using it to output remote information. When you should not use bash scripts your script is too long, as many as hundreds of lines you need more complex data structures than arrays there are complex escape problems there are too many string operations that do not need to invoke other p

parameterecho "Last argument is $ (eval echo \$$#)"echo "Last argument is $ (eval echo $#)"The shell also provides the Eval command, as well as the familiar scripting language, which takes its arguments as command execution, and at first glance doubts why the shell provides two mechanisms to dynamically execute the command string, but after careful analysis, it is found that the Shell's eval differs greatly from other languages.Functions in 1.shell c

, which is represented as a local variable. such as local temp=1 .Example 3. Array Parameterstest3.sh#!/bin/bash Span class= "hljs-comment" ># trying to pass a array variable function testit {local newarray # use ' local ' define a local variable newarray= (' echo " the NewArray value is ${newarray[*]} "}myarray= (1 , 2 , 3 , 4 , 5 ) echo "the original array is:${ Myarray[*]} " testit $myarray Test:sh test3.shOutput:The original array is:1,

Author: Cheron Link: https://www.zhihu.com/question/29581524/answer/44872235 Source: Know Copyright belongs to the author, reprint please contact the author to obtain authorization. Now the Internet is rich in resources, Java learning is not difficult. The introduction and Advanced Guide to the Java service side is for beginners in our group, including learning goals, skills and references that need to be

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