Linux operating file directory

command	Explanation	grammar	parameter	Parameter Description
ls	Display a list of files and directories	ls [-alrtAFR] [name...]
			-l	For more information list file
			-a	Lists all files in the current directory contains hidden files
mkdir	Create a directory	mkdir [-p] dirName
			-p	Mr. parent directory to the parent directory absence
cd	Change directory	cd [dirName]
touch	Generates an empty file
echo	Generates a file with content	echo abcd > 1.txt，echo 1234 >> 1.txt
cat	Display text files	cat [-AbeEnstTuv] [--help] [--version] fileName
cp	Copy the file or directory	cp [options] source dest
rm	Delete Files	rm [options] name...
			-f	Forced to delete a file or directory
			-r	Delete all files in this directory
mv	Moving files or directories	mv [options] source dest
find	Find the specified file in the file system
			-name	file name
grep	Find specified string in the specified text file
tree	It used to list the contents of the directory tree diagram
pwd	Displays the current working directory
ln	Softlinks
more	Page display the contents of a text file
head	The beginning of the file display
tail	Display file contents end
			-f	Trace output