The follow Option An extremely useful feature of (Web hosting services)
The follow Option An extremely useful feature of the tail command is the -f ( f as in follow) option: tail -f file Specifying the -f option enables you to examine the specified file while programs are writing to it. Often I have to look at the log files generated by programs that I am debugging, but I don’t want to wait for the program to finish, so I can start the program and then use tail -f for the log file. Some Web administrators use a command such as the following to watch the HTTP requests made for their system: $ tail -f /var/log/httpd/access_log Sams Teach Yourself Shell Programming in 24 Hours Contents Index Hour 15: Text Filters Previous Chapter Next Chapter Sections in this Chapter: The head and tail Commands Summary Using grep Questions Counting Words Previous Section Next Section Copyright Macmillan Computer Publishing. All rights reserved.
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