Shell

#!/bin/bash# Create a link interface named Bond0 ip=$1gate=192.168.18.1eth1=eno1eth2=eno2#eth3=eno3#eth4=eno4modprobe bonding# Back up the NIC 1 file cp /etc/sysconfig/network-scripts/ifcfg-$ETH 1 ifcfg-$ETH 1.bak# Modify the NIC Profile

Sample Resource Listsuch as Url.txt:http://su.bdimg.com/static/superplus/img/logo_white_ee663702.pnghttp:// Su.bdimg.com/static/superplus/img/logo_white_ee663703.pnghttp://su.bdimg.com/static/

Two virtual machines, all to be detected1. is yum available2. Firewall default zone modified to trusted3. Whether the IP address is configured#######################################################Second, ordinary users (must restore the environment)

Pipe symbol, UNIX is a very powerful feature, the symbol is a vertical line: "|".Usage: Command 1 | Command 2 His function is to pass the result of the first command 1 execution as input of the Command2 to command 2, for example: $ls-S|SORT-NR (Note

Using Prompt_command to implement the command audit function:Record what users, at what time, what to do, and then record the information found in a file.Specific operation:Append the following to/etc/profile:############ #日志审计chmod +s/usr/bin/chmod

The PS command in Linux is the abbreviation for process status. The PS command is used to list those processes that are currently running on the system. The PS command lists the current snapshots of those processes, which are those that are

SET-E # Exit The script if an error happensScript ASet +e # don ' t bail out of bash script if CCache doesn ' t existScript BSET-E # Back to regular ' bail out on error ' modeScript CAs a script shell above,The script in a and C executes when the

Equipped with the Spark cluster, first wrote two small examples with Pyspark, but found that the TAB key is not prompted, so the intention to go to Scala to try, in the Spark-shell under the hint, but found not to backspace, and the hint is not a

1. Load the configuration file sequence during the Linux login process:/ETC/PROFILE→/ETC/PROFILE.D/*.SH→~/.BASH_PROFILE→~/.BASHRC→[/ETC/BASHRC]You can view the default ~/.BASHRC file as follows:1 cat ~/2# BASHRC34# User specific aliases and

Shell Basic OperatorsThe Shell, like other programming languages, supports a variety of operators, including: Relational operators Boolean operator String operators File Test Operators Native bash does not support simple

Learning two months of Linux, remember a lot of commands, know the role of the script, also by the script killed about half of the brain cells, and now the script is not skilled use, feel lost. Love my brain cells, hate the script, but have to say

Cat ${file} | While Read lineDoecho $ LineDone-------------------------------------------While the read line #每次读取aa a row in the. ListDoEcho $LINE #输出每行的信息Done ${file}-------------------------------------------Reads the first and second columns

Regular expressions^ Start tag$ end Tag[A-z][A-z][0-9]. Single arbitrary character* Number of previous character repetitions >=0+ Number of previous character repetitions >=1？ Number of previous character repetitions 0 or 1{N,m} The number of times

1. Thread group settings, HTTP cookies, HTTP request default settings, Note: Cookies are primarily delivered to the login status2. Set the login HTTP request3. After logging in, access the Data interface (and post-processing the data return value)4.

Method 1 : Using sedShell>cat A1.txt123a123,555456.333566 . 555!88,thisis a good boy.Shell>cat a1.txt|sed ' s/[[:space:]|[:p unct:]]/\n/g ' |sed '/^$/d ' |sort|uniq-c|sort-n-k1-r2 5551 This1 is1 good1 boy1 A1231 A1 881 5661 4561 3331 123Shell>Sed '

This article directory:1.1-Bar expressionUsage notes for 1.2 test and []1.3 [[]]1.4 Usage RecommendationsTest can be used for testing expressions, including: string comparisons, arithmetic comparisons, file existence, attributes, types, and so on.

Handling strings in shell scripts1, ${#变量名}Function: Returns the length of a string# foo= "This is a test"# echo ${#foo}//Returns the length of the string foo142. ${variable name: offset:length}Function: Intercepts the string, length specifies the

Sometimes in the Linux operating system need to calculate the length of a string, through the query data to collate the current shell to get the length of the string of several methods, here to share, the method is as follows:Method 1: Use the wc-l

#!/bin/bash                  ----The default execution shell mode #chkconfig: 2345 10 80        ---- Add to boot execution mode path= "/usr/local/nginx/sbin/nginx"         ---- The boot path after the source code installation Nginx name= "Nginxd"    

Array Summary Directory: Array composition Array Assignment Array output Array case 1. Array compositionThe composition of an array is a collection of elements, using a variable to store multiple elements, to