commandliners

From time to time we want to see only a few lines near the end of a file. We often use cat or more, but this can be tedious when the file is big (like a very long log file). You can use these commands to read from the end of the file:

• tac. It works exactly as cat but reading from the end of the file
• tail. It reads from the end of the file. It has more features than tac. The one I found to be more interesting is the -f flag. It makes tail to continue reading from the end of the file. This is very useful to continuously reading the last lines written to a log file