1. cat command
1. cat+文件名, view the contents of the file:
For example, view the content of the main.c file:
2. cat < 文件名, write data to the file, Ctrl+d is to end the input
For example, write data to the file a.txt:
Check the content just written into a.txt:
3. cat 文件名1 文件名2 > 新文件名Merge the files, merge the contents of file 1 and file 2 into a new file
For example, merge the contents of a.txt and b.txt into file.txt:
Two, the more command
more 文件名, when the content of a file exceeds the number of lines that can be displayed on one screen, use more to display the file content in split screens. At this time, you can press Enter to display the remaining content line by line, or you can press Space to display the remaining content page by page content.
Three, less command
less 文件名, a text content viewer to view the file content, use the arrow keys to view the file content downwards, or use the arrow keys to view the file content upwards.
Fourth, the head command
head -n 文件名, display the contents of the first n lines of the file.
For example, to display the contents of the first three lines of the file file.txt:
5. The tail command
tail -n 文件名displays the contents of the last n lines of the file.
For example, to display the content of the last 3 lines of the file file.txt:
