Refresh the window to display the IP address and name of Machine C (sons).
刷新窗口以显示 Machine C（sons）的 Ip 地址和名称。
2
If you know the exact position at which the first character of the file owner begins, you can use -c option to display the first character of the file owner.
如果您知道文件属主信息开始的第一个字符的确切位置，可以使用- c选项来显示文件属主的第一个字符。
3
So, to display the first 200 characters, use head -c 200 file, or use tail -c 200 file to display the last 200 characters.
因此，要显示前200个字符，请使用head - c 200 file，或者使用tail - c 200 file来显示后200个字符。