Linux/Unix: pstree Command Examples: See A Tree Of Processes

The pstree command in Unix and Linux systems is used to display a tree of processes, showing the relationships between parent and child processes. It can be a useful tool for understanding the process hierarchy on a system and for identifying which processes may be related to each other.

Here are some examples of using the pstree command:

1. Display the process tree for the current user:

$ pstree

2. Display the process tree for a specific user:

$ pstree -u username

3. Display the process tree in ASCII art form:

$ pstree -a

4. Display the process tree with the PIDs of each process:

$ pstree -p

5. Display the process tree in a compact form:

$ pstree -s

6. Display the process tree with additional information about each process, such as the command line arguments and environment variables:

$ pstree -g

7. Display the process tree for a specific process:

$ pstree -p PID

You can use various options and arguments with the pstree command to customize the output and filter the processes that are displayed. For more information about the pstree command and its options, you can consult the documentation for your specific Unix or Linux system.