1. Name

watch [man page] - execute a program periodically, showing output fullscreen

2. Synopsis

watch [-dhvt] [-n seconds] [--differences[=cumulative]]
      [--help] [--interval=seconds] [--no-title]
      [--version] command 

3. Frequently used options

-n seconds interval in seconds 

4. Examples

Watch is utility which helps you to WATCH for changes. For example if we want to watch content of directory for new files we can do:

$ watch ls ~/ 

By default watch update screen every 2 seconds. To change this interval we can use -n option. If we want to watch to refresh screen every 0.5 second we do:

watch -n 0.5 ls ~/ 

watch for directory or file change

Free Linux eBooks

Do you have the right skills?

Our IT Skills Watch page reflects an up to date IT skills demand leaning towards the Linux and Unix environment. We have considered a number of skills and operating systems.

See the result...

Go to top