摘要：
Head The head command is used to display the beginning of a file or the first few lines of input. It's a useful command for quickly viewing the start 阅读全文
摘要：
The read command is used to take input from the user. Reading a single input value: echo "Enter your name:" read NAME echo "Hello, $NAME!" Output afte 阅读全文
摘要：
The echo command is used to display a line of text or string that is passed as an argument. It's one of the most basic and frequently used commands in 阅读全文
摘要：
The wc command computes the numbers of lines, words, and bytes in a file: wc notes.txt # > 3 7 35 /home/substack/notes.txt Count words wc -w notes.txt 阅读全文