[Unix] C Shell (csh) ps Uso equivalente: Display process information

Overview

The ps command in C Shell (csh) is used to display information about the currently running processes on the system. It provides a snapshot of the active processes, including details such as process ID (PID), terminal associated with the process, CPU usage, and memory usage.

Usage

The basic syntax of the ps command is as follows:

ps [options] [arguments]

Common Options

• -a: Displays processes for all users.
• -u: Shows the user-oriented format, including the user name and CPU/memory usage.
• -x: Includes processes that are not attached to a terminal.
• -e: Displays all processes running on the system.
• -f: Provides a full-format listing, including PPID and command line.

Common Examples

Here are some practical examples of using the ps command:

1. Display all processes for the current user:

   ps -u
   

2. Show all processes running on the system:

   ps -e
   

3. List processes with detailed information:

   ps -f
   

4. Display processes for all users:

   ps -a
   

5. Show processes not attached to a terminal:

   ps -x
   

Tips

• Combine options for more detailed output. For example, ps -aux provides a comprehensive view of all processes.
• Use grep to filter results. For example, ps -e | grep firefox to find the Firefox process.
• Regularly check your running processes to monitor system performance and resource usage.