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From Chapter 7 of Linux Shell script introduction Archiving with tar The tar command can archive files. It was originally designed to store data on tape, so its name also comes from Tape ARchive. Tar can package multiple files and folders into a single file, while retaining all file attributes, such as owner, permissions, etc. Files created b ...

Linux three swordsmen awk awk description awk - pattern scanning and processing language； awk is gawk, which is more like a language and is very powerful in file processing; awk can customize variables, functions, loops, conditional statements, etc; awk judges and processes data line by line; awk usage awk command syntax Precedin ...

As a programmer, especially the old code farmer who can't do anything without vim, the "use English punctuation in Chinese" function of the input method is essential. It allows you to avoid many unnecessary Chinese and English switching operations when writing code. However, this function is a burden when writing documents. Chinese do ...

Summarize the scripting from 10.14 to 10.28 In order to consolidate the relevant knowledge points of shell script, the problems and solutions encountered in writing script are summarized. Title I 10.14.sh The logic is not perfect, and there is no troubleshooting experiment. Many problems will arise when troubleshooting experiments are carried ...

home pagespecial columngitArticle details0General operation of GitLao Mao Published 21 minutes agoAs a developer, no matter where he goes, he may have an indescribable relationship with the code warehouse. From clone warehouse = > new function branch = > submit after the development function is completed = > branch merge = > label = ...

The awk command is used for output, statistics, and other processing of records that match styles in a file. awk command syntax: awk pattern { ACTION } While awk reads the file, the variable $0 holds the entire line, the variable $1 holds the contents of the first field, $2 holds the contents of the second field,.... The variable NF holds ...

introduction In this highly information-based IT era, the production system, business operation, sales and support, daily management and other links of enterprises increasingly rely on computer information and services, resulting in a large increase in the demand for the application of high availability technology, so as to provide conti ...

for command: Various uses of for i in: for i in "file1" "file2" "file3"for i in /boot/*for i in /etc/*.conffor i in $(seq -w 10) -- equal width 01-10for i in {1...10}for i in $( ls )for I in $(< file)for i in "$@" -- take all location parameters, which can be abbreviated as for i Note: the bash shell supports C-type f ...

Preface In a real production environment, writing shell scripts will inevitably encounter some interactive interfaces, such as raid s and extensions, which require interaction, so we need to use the following non-interactive operations to achieve true shell script automation. 1. Here Document exempt from interaction 1. Overview Provide ...

        I've been learning shell for some time. I've sorted out some basic shell syntax before. Today I'll make a phased summary. In addition, there are several script examples for your reference. Summary brain map Script instance 1. Judge whether the two hosts are ping ed #!/bin/env bash #This script is used to deter ...