Shell

AM (Activity Manager) is a tool for managing activity, initiating activity, services, sending broadcasts, and closing windows.start activity:adb shell am start [options] : Can be obtained in the app's Androidmanifest.xml[Options]:-n class name,-a

GitHub Address: Https://github.com/robbyrussell/oh-my-zshSupport for Linux and Mac.Install command: sh-c "$ (Curl-fssl https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/ install.sh)"or Sh-c "$ (wget https://raw.githubusercontent.

#!/usr/bin/env Bashansilbeif [$-eq 0] #检查上一命令是否执行成功, if not equal to 0, install then echo ' ansible existing ' else #设置EP El Warehouse Rpm-iuvh http://dl. fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm #使用yum安装Ansible yum-y

The shell itself is a program written in C, which is a bridge for users to use Linux. The shell is both a command language and a programming language. As a command language, it interprets and executes user-entered commands interactively, and as a

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

grep, sed, and awk are all text processing tools, and although they all have their advantages and disadvantages, one text processing command cannot be completely replaced by another, or three text-processing commands will not appear. In comparison,

This article is part of the Linux Shell Series Tutorial (11), more Linux shell tutorials: Linux Shell Tutorials In the previous Linux Shell Series tutorial (10) Shell for loop, we have introduced a for loop for Shell loop statements, this

6. Script timed Tasks# Example of job definition:# .------------------------- minute (0 - 59)# | .--------------------- hour (0 - 23)# | | .----------------- day of month (1 - 31)# | | | .------------- month (1 - 12) # | |

Today wrote a circular ping script to scan the network segment some of the IP address, the code is as follows:#!/bin/bashPing_info () {Ping-c 2-w 1 $;if (($?! =0));Then echo $ >>/tmp/iplist;Fi}For i in ' seq 129 254 ';d Oip_dx=192.168.1. $iip_lt=192.

In this article we introduce a shell script that uses the rsync command to back up files/directories on your local Linux machine to a remote Linux server. Using this script will implement the backup interactively, and you will need to provide the

If the expression contains special characters, the Shell will replace it. For example, using a variable in double quotes is a substitution, and an escape character is also a substitution.As an example: #!/bin/bash a = Ten Echo-e

-------------------------------------------------------------------------------------------"Cut Command"Cut [Options] File-F Column Number (--field extract the first few columns)-D delimiter (--delimiter splits columns by specified delimiter)VI User.

ReasonThe GB2312 encoding used by Windows, most Linux systems support UTF-8 encoding, while remote login uses local encoding.Scenario One: Modify the files in the Linux hostvi/etc/sysconfig/i18nThe original content is:Lang= "ZH_CN. UTF-8 "Modified

The logical operators of the shell involve the following types, so as long as the appropriate choice, can solve our many complex judgments, to achieve a multiplier effect.First, the logical operator Logical Volume Label Express

Debug is more boring, so here first on the conclusions and examples, Debug notes do not look and no confusion.ConclusionUsing the return value in the shell, the only way to be universal is to use a global variable, or use Echo and receive it in the

$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of "" ", in the

# # # Bash in the History command in the Shell----------In daily operations, we often use the history command to check the historical commands executed on this machine, or at what time the commands are executed. The history command does not show the

6. Script timed Tasks# Example of job definition:# .------------------------- minute (0 - 59)# | .--------------------- hour (0 - 23)# | | .----------------- day of month (1 - 31)# | | | .------------- month (1 - 12) # | |

First of all, the problem arises from the background, because to do stress testing, frequent use of the AB command, need to test a lot of items, each test to do more than 10 times, Test finished also to draw test results curve, and because the

In general, the programming language can be divided into two categories: the compiled language and the interpreted language.Compiled languagesMany of the traditional programming languages, such as Fortran, Ada, Pascal, C, C + +, and Java, are