Linux command learning record

1. stat : this command will display the status information of a file
2. wc -l : count the amount of lines in the objective file
3. wc -w : count the amount of words in the objective file
4. wc -c : count the amount of characters in the objective file
5. head -n [ 10] : display the first 10 lines of the objective file
6. tail -n [10] : display the last 10 lines of the objective file
7. tail -f : automatically outputs appended contents of the objective file