gettid - Linux

Overview

The gettid command is a versatile tool for retrieving the Thread ID (TID) of the current process. It is a lightweight and efficient way to obtain critical thread-related information, find current thread ID, and facilitate advanced process management tasks.

Syntax

gettid

Options/Flags

This command has no options or flags.

Examples

Example 1: Display Thread ID

To display the Thread ID of the current process:

$ gettid
145742904542720

Example 2: Scripting with Thread ID

In a script that manages multiple threads, obtain the Thread ID for specific tasks:

#!/bin/bash

tid=`gettid`
echo "Current thread ID: ${tid}"

Common Issues

None reported.

Integration

gettid is commonly used with other commands that require thread-specific information. For example:

• gdb: Attaching to a specific thread using the TID: gdb -p <tid>
• ps: Filtering processes by their TIDs: ps -T <tid>

Related Commands

• top: Displays thread-related information (including TIDs) for running processes.
• pstree: Displays a hierarchical view of threads and processes.
• strace: Traces system calls made by a process or thread, including TID identification.