# Alternative using jcmd (JDK 7+) jcmd <PID> Thread.print > thread_dump.txt
jstack can access sensitive runtime information. On production systems: install jstack on ubuntu
To install on Ubuntu, you must install the Java Development Kit (JDK) # Alternative using jcmd (JDK 7+) jcmd <PID> Thread
sudo apt install openjdk-21-jdk
To use the jstack command without specifying the full path, add the JDK bin directory to your system path: install jstack on ubuntu