Shell

3. Compile and test the results: A. Empty command line variables. B. Open a command line window and change the directory (CD) to the location of the SLUtil.exe file (... \debug\slutil.exe) C. Open the Library shell folder next to the Command Line

This article mainly introduces the shell script implementation to monitor the running state of the specified process, this article directly gives the script code, the need for friends can refer to the following In the previous blog, once wrote the

command options files Some variables related to the arguments passed to the shell: the number of $# command line arguments $? The return value of the calling command $$ the process number of the current process $! The process number of the last

The command interpreter Shell is an application that is most closely related to users, and users use the system primarily through the shell. After each login to the system, a shell that interacts with the user is started, and the shell gives a

Found that three symbols are useful when writing scripts. One is the pipe command "|", one is executing the command "&" in parallel, and the other is "&&" The so-called pipe, acting as a function of the connection between the front and back two

This article records my common or useful system level commands under Linux system, including hardware and software view, modify command, CPU, memory, hard disk, network, system management, etc. However, this article does not intend to introduce

Speaking of function calls, I believe that we will not be unfamiliar, however, for beginners shell of me, the shell function call Way is a little let me not too accustomed to, I have gone a lot of detours, because the transfer parameters when a very

Environment: SSH server:192.168.100.29 server.example.com SSH client:192.168.100.30 client.example.com Create secret key authentication through root user to implement Shell script management, distribution, deployment First, the client side

#!/bin/bashCat # Auto Install lamp env# by author Max# 2017-03-20Eofapache_soft= "HTTPd httpd-devel"mysql_soft= "Mariadb-server mariadb mariadb-devel"php_soft= "PHP php-mysql php-devel"ip= ' ifconfig eno16777736|grep 192|awk ' {print $} ' |sed '

Functions: functionProgram Programming: Code ReuseModular programmingStructured programmingThe code of an independent function as a whole, and a name for it; a named code snippet, which is a function;Note: The code snippet that defines the function

Prepare 3 Machines1.linux-node1 ip:10.89.3.108 (Springboard machine)2.weblamp ip:10.89.3.1003.weblnmp ip:10.89.3.101The 3 system environments are as follows:[Email protected] ~]$ cat/etc/redhat-release CentOS release 6.8 (Final)1) First do SSH key

First set a small goal, first proficient in the shell say! --OLD boyUseShelldeveloping a Springboard function script caseexample 17_6: Developing an Enterprise-class Shell springboard machine case. Requiring a user to log on to a springboard machine

Move cursor shortcut keysCtrl+f move forward one characterCtrl+b Move backward one characterCTRL + A moves to the beginning of the current homeCtrl+e move to the end of the current lineAlt+f move forward one wordAlt+b Move backward One wordCtrl+l

First, the meaning of variable $#,[email protected],$0,$1,$2,$*,$$,$ in Linux:Script tests can be used to differentiate the specific roles and usages of these variables.The script is as follows:# vim Variable#!/bin/shecho "number:$#" echo "Scname:$0"

First we need to understand the content and format of the script The first line must be shebang (interpreter path), shebang must occupy the absolute beginning In the shell script, except for Shebang, the contents of the line beginning

echo Display in shell script with color display, echo display with color, need to use parameter-EThe format is as follows:Copy the code code as follows:Echo-e "\033[word background color; text color m string \033[0m"For example:Copy the code code as

In the previous blog, we introduced some of the features of Shell programming, namely command aliases, command history, shortcut keys, command completion, command line expansion, command execution results, escape characters, wildcards, IO

Homework One: Organize your blog with awk, variables, operators, if multiple branchesJob Two: awk text processing1, print the UID within the scope of 30~40 user name[Email protected] ~]# awk-f: ' $3>=30 && $32. Print the line number and user name of

===========================================================================if define a PATH variable in a statement the path that raised the command bug where path change occurs problem Original script file: INotify +rsync Live Sharing

Frequently used file test operators-ongoing updates - e -- exist File exists is True - F -- file File exists and is true for normal files - D -- Directory File exists and is directory-True