JINFO(1)

💅 JINFO(1) — the jinfo girlies' guide

ok so bestie, this is jinfo, straight out of the JDK command crew — she generates Java configuration information for a specified Java process. yes that's the whole personality. let's get into it 💖

🎀 NAME

jinfo — generate Java configuration information for a specified Java process ✨

🌸 SYNOPSIS

⚠️ heads up bestie: this command is experimental and unsupported. iykyk 😭

jinfo [option] pid

• option — this is where the jinfo command-line options go. peek at Options for the jinfo Command below for the full menu 🍓
• pid — the process ID you want the configuration info for. important: the process must be a Java process, no exceptions. wanna see which Java processes are even running on the machine? use either the ps command, or — if the JVM processes aren't running in a separate docker instance — the jps command. 🫶

🦋 DESCRIPTION

okay so jinfo prints Java configuration information for a specified Java process. and what's in that info? Java system properties plus JVM command-line flags. the whole vibe check of your JVM, basically 👑

one thing to know: if the specified process is running on a 64-bit JVM, you might need to specify the -J-d64 option, like this:

jinfo -J-d64 -sysprops pid

now for the fine print, and ngl it's important:

this command is unsupported and might not be available in future releases of the JDK. 💀

also on Windows systems where dbgeng.dll is not present, you gotta install the Debugging Tools for Windows to have these tools work. and your PATH environment variable should contain the location of the jvm.dll that's used by the target process — or the location from which the core dump file was produced. literally put it in the PATH. don't skip that step bestie 🌈

✨ OPTIONS FOR THE JINFO COMMAND

📌 Note: if none of the following options are used, both the command-line flags and the system property name-value pairs are printed. so you get the deluxe combo by default, slay 🎀

• -flag name — prints the name and value of the specified command-line flag.
• -flag [+|-]name — enables or disables the specified Boolean command-line flag.
• -flag name=value — sets the specified command-line flag to the specified value.
• -flags — prints command-line flags passed to the JVM. 🔥
• -sysprops — prints Java system properties as name-value pairs.
• -h or -help — prints a help message. 🫶

and that's the whole page, bestie! this icon was brought to you by JDK 25.0.5.0.3, dated 2026 — no cap, that's the version and the date, periodt. 💜🧚💫