Command to view the specified number of lines in the file tail command (to view the data at the end of the file) 1 #The content at the end of the output file, 10 lines by default
2 tail date.l
About operating system
Introduction to Operating System 1. Why is there an operating system Modern The computer system is mainly composed of one or more processors, main memory, hard disk, keyboard, mouse, monitor, print
Syntax – Is it easier to write recursive drop parsers using EBNF or BNF?
I have a grammar for BNF and EBNF. BNF is obviously more verbose. As far as building a recursive descent parser using BNF, I have a pretty good idea; there are many resources for me. Could not find
Regular expression – Multi-line match in Haskell POSIX
I can’t seem to find suitable documentation on Haskell’s POSIX implementation.
Especially the module Text. Regex.Posix.
Anyone Can you point me in the right direction to use multi-line match
Operating system (OS)
1. Operating System (OS) Schematic diagram of the operating system as an interface
A computer without an operating system is usually called bare metal
Virtual Machine refers to softwar
Text handling CUT, SORT, UNIQ, PASTE regular expression
Text processing cut, sort, uniq, paste regular expressions 1 cut Extract text by column cut -d DELIMITER -f FILEDS .example,cut -d: -f1, use- d: Colon separator, use f1 to get the first column.
Operating system – Can Peterson’s solution running properly on modern CPU architecture?
I am studying the Operating System Concepts of Silberschatz, Galvin and Gagne.
On page 229, the book explains this about Petersons Solution:< /p>
Because of the way modern computer arch
How to avoid creating .crc files when creating parquet floors
I am using a parquet frame to write parquet files
I used this constructor to create a parquet writer –
public class ParquetBaseWriter extends ParquetWriter {
public ParquetBaseWriter(Path fi
[Research on the computer] Operating system D6: concurrent program design
1. Basic concepts of concurrent programs
2. Concurrent program control and problems
Algorithm: warshall closure
Operating system – the theory behind the boot process
I downloaded several bootloaders from osdev and successfully loaded a kernel. But now I want to learn the theory behind the bootloader. I want to know why the system starts and everything behind th