1. touch command
touch --- create filename
touch [file name]: (in the root directory is to directly write the root directory, if it is not created in the root directory, write the absolute path of the detailed directory name)
touch test01 test02 : create two filenames at the same time
touch 'test test': Create a file name with spaces (it is not recommended to create a file name with spaces, and you need to query with spaces in subsequent queries, which is a bit troublesome)
2. cat command
cat --- display file contents
cat -n(number, line number) : Add the line number to view the file content of the specific file line number
3. tac command
tac --- Display file contents in reverse
4. The more command
more ---- Pagination to display the contents of the file
After entering: press space or f to reverse the page; enter to newline; Q or q to exit
5. The less command
less --- Paginate the contents of the file (the page can be reversed upwards)
After entering, press the up arrow to reverse the page; /[Search content] press Enter to find the specific content
6. head command
head --- Display the content of the first few lines (the first 10 lines are displayed by default)
head -n (specific line number): Display the specific line of the file
7. tail command
tail --- Display the last few lines of the file
tail -n : display the specified line
tail -f : Dynamically display the content at the end of the file
Press: ctrl c : exit