Example of cat commands in linux

The cat command function example in linux has three main functions: 1. display the entire file at a time. $ Catfilename2. create a file from the keyboard. $ Cat & gt; filename can only create new files, but cannot edit existing files. 3. combine

Bash and PATH

Bash preliminary discussion and PATH explanation 1. understand bash. The shell records the shell provided by the local machine in/etc/shells. These shells are binary executable files. The/etc/passwd can find the shell started by a fixed user, and

Bashshell for concurrent multi-process operations

Bashshell implements concurrent multi-process operations preface currently I have mastered the basic language, php (most familiar with, the code in the project is implemented using it), bashshell (O & M tool), c (acm dedicated ), it seems that only

Summary of Linux technical knowledge points

Summary of Linux technical knowledge 1. the system of the existing computing node has crashed and all hard disk partitions cannot be deleted. at this time, you can use any system installation disk to delete the hard disk partition and reformat it,

Smart programmers-remote control of Linux

Smart Programmers & mdash; remote control of Linux today I was writing a program to capture mouse and mouse messages in Linux. Check the information and see the following information: The Mouse and mouse device (including touch and other devices)

[O & M personnel? Why? 12] SpotlightonUnix adds a few scent to O & M

[O & M personnel? Why? 12] SpotlightonUnix adds a few scent to O & M? Why? 11] Precautions for permission setting during GNU/LinuxNFS server deployment: http://www.2cto.com/ OS /201304/203804.htmlspotlightonunixcannot only operate the system. [is a

Openwrt modify host name

Openwrt: modify the default host name in OpenWrt source code: [plain] package/base-files/etc/config/system [openwrt @ rootconfig] $ vimsystem1configsystem2optionhostnameJack3optiontimezoneUT openwrt Default host name: OpenWrt Modify in source

Linux LVM operation process

Linux has been operating the company's FTP server for LVM for several years. now there is a shortage of space, and it is decided to use LVM for resizing. Idea: first copy the data, then purchase a large-capacity hard disk and add it to the server,

Added a scheduled task deletion log in linux.

Linux added the scheduled task deletion log rmCharlog. sh #! /Bin/bashecho 'date + % Y-% m-% d' & gt;/l/rmCharlog. logfind/usr/app/glassfish/domains/domain1/logs-mtime + 2 & gt;/l/rmCharlog. logfind linux adds a scheduled task to delete the log

Build an embedded development environment in Ubuntu-continued

Ubuntu builds an embedded development environment. the embedded development environment includes two parts: the tool environment and the debugging environment. In the previous article "embedded development environment-Cross Compilation + tftp +

Find the rpm package corresponding to *. so

Find the rpm package corresponding to *. so 1. find/-dfilename2.rpm-qffilnameeg: [root @ vbox1 ~] # Find/-nameld-linux.so.2/home/oracle/app/oracle/product/11.2.0/dbhome_2/lib/stubs/ld-linux.so.2/lib Find the rpm package corresponding to *. so. 1.

Tomcat startup configuration in linux

In linux, after tomcat is started and configured in linux, if you want tomcat to start automatically after it is configured in linux, another configuration is required. the following two methods are introduced! Tomcat startup Method 1: modify tomcat/

Ld: cannotfind-lgcc_s solution

Ld: cannotfind-lgcc_s address today in compiling node. js when this error occurs, resulting in compilation errors can not continue ld: cannotfind-lgcc_s problem cause: gcc compilation module not found, starting with soft connection failure, in

How to set PPPoE broadband connection in Linux

The PPPoE client software must be installed to set the PPPOE broadband connection in Linux. The following describes how to install: This article uses RedHatLinux6.2 as the experimental platform. for Linux installation methods on other platforms,

Scheduled script execution in Linux

In Linux, the scheduled execution script in Linux is mainly executed by adding a custom plan to the crontab file, mainly by remembering the/var/spool/cron directory. Next let's take a look at the specific usage: First check the/etc/crontab File: $

How to modify linux host name

Run the # uname-ncsdba # hostnamecsdba1 command to modify the linux host name and view the host name. run the hostname command. Command format: hostnamenewhostname this command is used to temporarily modify the linux host name. Its survival time is

Delete copy and move a file

Run the Linux code rm-rf/file-r: recursive processing parameter-f: force delete all files Linux code cp/test1/file1/test3/file2 copy file1 to test3 and rename file2Linux code cp-atesttest1 to t... run the Linux code rm-rf/file-r: recursive

The use of mount -- bind

The use of mount -- bind often encounters the following situation during firmware development: to test a new function, you must modify a system file. This file is on the read-only file system (you can't refresh the firmware for a small test), or

Tomcat and jdk are packaged and deployed in linux

Tomcat and jdk are packaged and deployed in linux. 1. find a jdk of the installed linux version and package the installed directory. 2. decompress the packaged jdk in the tomcat root directory and change the name to jdk 1.6linux. 3. modify % tomcat %

Linux Network Operation Commands

Linux Network Operation Commands linux operation command summary github address: https://github.com/zhwj184/shell-work [Java] #/bin/sh # view the http request headertcpdump-s1024-l-A-nhost192.168.9.56tcpdump-s... linux Network Operation related

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