Ubuntu-shell command extract a file branch

Start a few lines: Head

End a few lines: tail

Middle lines: SED

1. If you only want to see the first 100 lines of the file, you can use the Head command, such as head-100 filename2. If you want to view the 100 lines of the file, you can use the tail command, such as: tail-100 filename or tail-n filename3. To view the middle section of the file, you can use the SED command, such as: Sed-n ' 100,200p ' filename so you can view only the lines 100th through No. 200 of the file. Intercepted files can be entered into a new file with redirection: head-100 filename >a.txt turn from: 43733891

Ubuntu-shell command extract a file branch