Tail how many lines

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Now live: A fully responsive profile. Related Hot Network Questions. Question feed. I want to output the last lines of a log file. Improve this question. Neil Neil. Add a comment. Active Oldest Votes. Improve this answer. Sign up or log in Sign up using Google. Sign up using Facebook. Tail is a command which prints the last few number of lines 10 lines by default of a certain file, then terminates.

Example :. Example 2: Now what about you are interested in just the last 3 lines of a file, or maybe interested in the last 15 lines of a file. Example 3: We can even open multiple files using tail command with out need to execute multiple tail commands to view multiple files. Suppose if you want to see first two lines of a. Example 4: Now this might be by far the most useful and commonly used option for tail command.

It will start printing extra lines on to console added to the file after it is opened. This command will keep the file open to display updated changes to console until the user breaks the command. I used ; which a kind of command chaining in Linux inorder to execute two commands in single line. Example 5: The same tail -f command can be replicated using less command well. Once you open a file with less.

If no file is specified, or if file is a dash " - " , tail reads from standard input. Outputs the last 10 lines of myfile. The tail command follows the file forever. This is a useful example of using tail and grep to selectively monitor a log file in real time. In this command, tail monitors the file access. It pipes access. Home Help Linux.