␡
- Getting Started
- Building Pipelines
- Running Commands as the Superuser
- Finding Help
- Moving Around the Filesystem
- Manipulating Files and Folders
- System Information Commands
- Searching and Editing Text Files
- Dealing with Users and Groups
- Getting Help on the Command Line
- Searching for Man Files
- Using Wildcards
- Executing Multiple Commands
- Moving to More Advanced Uses of the Command Line
This chapter is from the book
Building Pipelines
Building Pipelines
The power of the command line really comes into its own when you start combining commands by using pipelines. A pipeline uses the pipe symbol (|) to string together a number of commands to perform a specific task. As an example, if you use the cat command to display the contents of a file to the screen, but the file scrolls past you, create a pipeline and use the less command so you can browse the file:
username@computer:~$ cat foo.txt | less username@computer:~$ ps ax | grep getty | wc -l