function::task_pid - Linux

Overview

The function::task_pid command retrieves the process ID (PID) of a given task in the Linux kernel. It is primarily used for task management and debugging purposes, allowing users to identify the process associated with a specific task.

Syntax

function::task_pid <task_path>

Options/Flags

| Option | Description | Default |
|—|—|—|
| -h, –help | Display help and exit | – |

Examples

Example 1: Get PID of the current task

function::task_pid /proc/self

Example 2: Get PID of a specific task

function::task_pid /proc/12345/task/example_task

Common Issues

One common issue with function::task_pid is an invalid task path. Ensure that the provided task_path leads to a valid task directory within the /proc filesystem.

Integration

function::task_pid can be integrated with other commands to perform advanced tasks. For example, it can be used with getconf to determine the PID of the current user’s shell:

getconf SHELL | xargs function::task_pid

Related Commands

• [pidof](man 1 pidof): Search for processes by name.
• [pgrep](man 1 pgrep): Find the PID of a process based on a given pattern.
• [top](man 1 top): Display real-time process information.