Install Jstack On Ubuntu Jun 2026

Use sudo -u to run the command as the application owner. For example, if Tomcat owns the process: sudo -u tomcat jstack 28491 > /tmp/tomcat_dump.txt Use code with caution. Error: "well-known file /tmp/.java_pid is not secure"

This will output a path ending in /bin/java . The base path before /bin/java is your JAVA_HOME . install jstack on ubuntu

If you see a version number, it is already installed. If you see a "command not found" error, check if Java is installed at all: java -version Use code with caution. Use sudo -u to run the command as the application owner

If your project requires a specific Java version (like Java 11, 17, or 21), install it directly: sudo apt install openjdk-21-jdk -y For Java 17: sudo apt install openjdk-17-jdk -y For Java 11: sudo apt install openjdk-11-jdk -y Step 3: Verify the Installation The base path before /bin/java is your JAVA_HOME

2. "Unable to open socket file: target process not responding"

: Confirm the tool is available in your path. jstack -help How to Use jstack