Shell

First, replace the text:# #1Sed-i ' s/disabled=true/disabled=false/'/etc/fdfs/storage.conf# #2Sed-i ' s/base_path=\/home\/yuqing\/fastdfs/base_path=\/fdfs\/storage/'/etc/fdfs/storage.conf# #3echo "Enter tracker_ip:"Read Tracker_ipecho "$Tracker

Two comparison of parameters[Email protected] shell]# VI test.sh[email protected] shell]# cat test.sh#!/bin/bashif [$1-ge];Then ECHO-E "\033[41;37m \033[0m "Elseecho "Start and End time is: ' Date-d" $ days ago "+%y%m%d"--' date-d ' day Ago

This script is what you might need to do after you've just installed CENTOS6.6. When learning CentOS, you can run this script to do some configuration to help you not be bothered by these firewall yum SELinux IP.#!/bin/bash  #判断是不是root用户if  [[  "$

Variable Description:$$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

Catalogue 1. List of special variables 2. Special Instructions In the shell, variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such

The date command is the command that displays the DateTimeDateFriday, January 01, 2016 15:05:01 CSTThe option to modify the time is-s" 2016-01-01 12:56:10 "View CalendarAa.Annual CalendarCal-yTime to synchronize the serverYum Install Ntp-yNtpdate

Recently learning Gradle, using the git clone command to download some information, but the file name contains a space, it does not seem very comfortable, so think of using shell script to batch it, remove the file name of the space, note that this

Poptest is the only training institute for developing Test and development engineers in China, aiming at the ability of the trainees to be competent in automated testing, performance testing and testing tools development. If you are interested in

Linux Login Server Knock command too much, at some point it is inconvenient, so the shell wrote aI. Description Supports both secret and key formats The user name and password are both written and saved in clear text Two. Configuration

Tag:shell    function     menu print     [[email protected] scripts]# cat menu.sh #!/bin/bash################################# ## filename: menu.sh# describe: choose a place to eat# author:  lijun# create date: 2015-09-09# version: 1.0##############

In Linux, the execution of a script can help us save a lot of time, for the execution of the script it is understood by the individual, it is the same as the beginning of the file #! Bin/bash through the VI editor to create a new executable file,

Take the length of the variable [[Email protected] scripts]# var=oldboy123[[email protected] scripts]# echo  ${var}oldboy123[[email protected] scripts]# echo ${#var}9# For example: #以下判断用read输入一个值, if the length is 0, The value is empty,

#!/bin/sh# Describe:check the real server status# history:2015-08-25 22:21:38# Author:timPath=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/binExport PATHvip=192.168.1.121dip=192.168.1.112rip= ("192.168.1.122" "192.168.1.123")Vport=8

Emptying files with shell scriptsIn recent projects, a lot of log files are generated, so you need to write a script to empty them manually, here are a few typical ways.Method 1 Code#!/bin/bash##方法1echo "" > $1echo "$1 cleaned up."RunDescriptionI

#!/bin/bash# gets all m3u8 files in the current directory, and Var=$(ls|grep '. m3u8'|Cut-D'.'-F1) #死循环 while[1=1 ] Do#循环每个文件 forStreaminch$var Do#获取当前最新视频文件 TS=$(ls-t|grep "$stream") for file inch$ts Do#存储M3U8文件文件名作为图片文件名, for* -, capturing

#！ /bin/bashAction () {#1, get SVN update output/OPT/SVN/SVN/BIN/SVN update/opt/lampz/apache/web > File_out#2, gets the number of rows through the output file File_outline=$ (wc-l File_out|awk ' {print $} ')#3, if the number of rows is greater than 2

There are a number of ways to intercept strings in the shell, ${expression} There are 9 ways to use them. ${parameter:-word}${parameter:=word}${parameter:?word}${parameter:+word} The above 4 alternatives can be used for default values. ${#parameter}

grep Basic Usagegrep [Options] [mode] [file:]Options-C outputs only the number of matching rows-I ignore case when searching-H does not display file names when querying multiple files-L searches only for matching file names, not specific matching

Shell: The shell is the most straightforward way to operate Linux, interacting with the Linux system through the input commands in the shell.The shell is a small box, each with a separate namespace, the login operation is a shell (possibly bash,zsh,

PS: Only consider the latest version of Scala and python2.x, due to the difference between python3.x and python2.x, and the mainstream of some open source projects are used Python2, currently python2 a little bit compatible python31.