Tag：linux
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Time：2020-7-10
lspci NAME Lspci – list all PCI devices [[]]Synopsis lspci [ options ] [[ ]]Description Lspci is a tool used to display all PCI bus devices in the system or all devices connected to the bus. In order to be able to use all the functions of this command, you need to have Linux 2.1.82 […]
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Time：2020-7-10
Note: this blog is written by bloggers word by word, which is not easy. Please respect the original, thank you! 1、 Narration Note: students who need to install git in windows can view this blog https://www.jb51.net/softjc/711624.html Compared with windows, it’s easy to install Ubuntu using GIT. 2. Two characteristics of GIT Version control: it can […]
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Time：2020-7-9
Usage: uname [option]Output a set of system information. If the option is not followed, only the – s option is considered to be attached. – A, – all – outputs all information in the following order. Where – P andIf the detection result of – I is unknown, it is omitted– s, – kernel name […]
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Time：2020-7-9
How to view the version information under Linux, including bits, version information, CPU kernel information, CPU specific model, etc., the whole CPU information is clear at a glance. 1. # uname-a (Linux view version current operating system kernel information) Linux localhost.localdomain 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 athlon i386 GNU/Linux 2. Cat […]
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Time：2020-7-8
Packaging and compression In Linux, packaging and compression are two different concepts. It is very helpful for us to understand complex file suffixes pack When several files and directories are packed together into a large file, it is just a simple package. Therefore, the file size after packaging is generally larger than the total number […]
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Time：2020-7-8
Cat command is a text output command under Linux, which is usually used to view the content of a file.1、 FunctionCat has three main functions1. Display the whole file at a time. Copy code The code is as follows: $ cat filename 2. Create a file from the keyboard. Copy code The code is as […]
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Time：2020-7-7
History related commands !: execute the previous command ! num: execute num command in history command ! – num: execute the last num command in the history command !? String?: executes the last command containing a string string CTRL + R: search for previous matching command ! $: represents the last string of the previous […]
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Time：2020-7-7
revRev displays the last character to the first character.Parameter: None tacUsage: TAC [options]… [file]Invert each specified file line by line and write to standard output.If no file is specified, or if the file is “-“, the data is read from standard input.Parameters that must be used for long options are also required for short options.– […]
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Time：2020-7-7
Delete a file by its inode number First use LS – I to find the inode number of the file to be deleted ls -i |grep xxxxxx|awk ‘{print $2}’|xargs -i rm -f {} XXXXXX is the inode number of the file Delete files by file size Delete files with zero file size in the current […]
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Time：2020-7-6
History displays a list of command history ! (Ctrl + P) displays the previous command ↓ (Ctrl + n) displays the next command ! num execute num command in command history list !! Execute the last command !? String? Executes the latest command containing the string string CTRL + R, then enter a number of […]
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Time：2020-7-6
This paper introduces how to set Java environment variables under Linux. 1. View the Java installation path 2. View Java execution path 3. Configure Java environment variables 4. Java installation path and execution path 5. Pay attention hereJAVA_ Home must be followed by the bin pathYou must use the,Export outputPay attention to the word export […]
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Time：2020-7-5
loginThe login command: enables the user to give up his current identity and log in to the system again. You can also add users in the back, input the password directly and log in to the systemFor example: Copy code The code is as follows: [[email protected] test]# login logoutLogout user exits the system, and its […]
