What option do you add to the cat command to display line numbers?
There are two command line options available in the cat command that allows you to display line numbers, –number (-n) and –number-nonblank (-b), according to your requirement. The option -n or –number will print out the line numbers of all lines, including the blank or empty lines in the file.
How do I show line numbers more?
Press the Esc key if you are currently in insert or append mode. Press : (the colon). The cursor should reappear at the lower left corner of the screen next to a : prompt. A column of sequential line numbers will then appear at the left side of the screen.
How can I change the number of lines in the tail command?
The tail command displays the last 10 lines of a file. You can change the number of lines displayed by using the -n or +n options. – The -n option displays n lines from the end of the file. – The +n option displays the file from line n to the end of the file.
Which is the correct command head or tail?
The command is: head -M file_name | tail +N since the head command takes first M lines and from M lines tail command cuts lines starting from +N till the end, we can also use head -M file_name | tail + (M-N+1) command since the head command takes first M lines and from M lines tail command cuts (M-N+1) lines starting from the end.
How does the head command get the lines of a file?
Explanation: You probably already know that the head command gets the lines of a file from the start while the tail command gets the lines from the end. The “head -x” part of the command will get the first x lines of the files. It will then redirect this output to the tail command.
How to view a file using the tail command?
– The +n option displays the file from line n to the end of the file. For example, to display the last four lines of the /var/log/messages file, enter the tail command with the -n option set to 4. For example, to display line 10 through the end of the data.txt file, enter the tail command with the +n option set to 10.