Provided by: python3-drgn_0.0.32-2_amd64 
NAME
drgn - programmable debugger
SYNOPSIS
drgn [OPTION...]
drgn [OPTION...] SCRIPT [ARGUMENT...]
drgn [OPTION...] -e CODE [ARGUMENT...]
DESCRIPTION
drgn (pronounced "dragon") is a debugger with an emphasis on programmability. It provides APIs for using
the types, variables, and stack traces in a program or core dump from Python, allowing for easy,
expressive scripting and more complex debugging.
Full documentation is available online at https://drgn.readthedocs.io/.
For in-program documentation, try help(drgn).
OPTIONS
If no positional arguments are given (and -e is not given), then drgn runs in interactive mode: commands
are read from the terminal. Relevant helpers are automatically imported. An empty string is prepended to
sys.path.
If positional arguments are given (and -e is not given), then drgn runs in script mode: SCRIPT is
executed with the given ARGUMENTs. Nothing is imported automatically. sys.argv[0] is set to SCRIPT and
the remaining arguments are added to sys.argv. The parent directory of SCRIPT is prepended to sys.path.
-e CODE
Evaluate the given code and exit. Relevant helpers are automatically imported. sys.argv[0] is set
to -e and the remaining arguments are added to sys.argv. An empty string is prepended to sys.path.
Program Selection
One of these options may be given to specify what program to debug.
-k, --kernel
Debug the running kernel. This is the default.
-c, --core PATH
Debug the given core dump.
-p, --pid PID
Debug the running process with the given process ID.
Debugging Symbols
-s, --symbols PATH
Load debugging symbols from the given file. If the file does not correspond to a loaded
executable, library, or module, then a warning is printed and it is ignored; see --extra-symbols
for an alternative.
This option may be given more than once.
--main-symbols
Only load debugging symbols for the main executable and those added with -s or --extra-symbols.
--no-default-symbols
Don't load any debugging symbols that were not explicitly added with -s or --extra-symbols.
--extra-symbols PATH
Load additional debugging symbols from the given file, which is assumed not to correspond to a
loaded executable, library, or module.
This option may be given more than once.
The following options correspond to drgn.Program.debug_info_options in the Python API.
--try-symbols-by METHOD[,METHOD...]
Enable loading debugging symbols using the given methods. METHOD may be:
• The name of a debugging information finder (standard, debuginfod, or any added by plugins).
• module-name: if the name of a module looks like a filesystem path, try the file at that path.
• build-id: search by build ID.
• debug-link: search by debug link (e.g., .gnu_debuglink).
• procfs: try /proc/pid/exe or /proc/pid/map_files.
• embedded-vdso: try vDSO data saved in a core dump.
• reuse: try reusing a previously used file.
• supplementary: try finding supplementary files (e.g., .gnu_debugaltlink).
• kmod=depmod: search using depmod metadata.
• kmod=walk: search by walking kernel directories.
• kmod=depmod-or-walk: search using depmod metadata if it is available or by walking kernel
directories if depmod metadata does not exist.
• kmod=depmod-and-walk: search using depmod metadata if it is available, then by walking kernel
directories if depmod metadata does not exist or does not contain the desired module.
Multiple methods may be enabled by passing a comma-separated list. This option may be given more
than once, in which case the lists will be combined.
--no-symbols-by METHOD[,METHOD...]
Disable loading debugging symbols using the given methods. METHOD may be the name of a debugging
information finder, module-name, build-id, debug-link, procfs, embedded-vdso, reuse,
supplementary, or kmod.
Multiple methods may be disabled by passing a comma-separated list. This option may be given more
than once, in which case the lists will be combined.
Debugging Symbol Directories
These options correspond to drgn.DebugInfoOptions.directories in the Python API.
--debug-directory PATH
Search for debugging symbols in the given directory.
By default, these directories are used for searches by build ID, debug link, for supplementary
files, and for kernel files.
This option may be given more than once to search in multiple directories.
--no-default-debug-directories
Don't search for debugging symbols in the standard directories or those added by plugins.
These options correspond to drgn.DebugInfoOptions.debug_link_directories in the Python API.
--debug-link-directory PATH
Search for debugging symbols by debug link in the given directory.
$ORIGIN (or ${ORIGIN}) is replaced with the absolute path of the directory containing the loaded
file.
This option may be given more than once to search in multiple directories.
--no-default-debug-link-directories
Don't search for debugging symbols by debug link in the standard directories or those added by
plugins.
These options correspond to drgn.DebugInfoOptions.kernel_directories in the Python API.
--kernel-directory PATH
Search for the kernel image and loadable kernel modules in the given directory.
This option may be given more than once to search in multiple directories.
--no-default-kernel-directories
Don't search for the kernel image and loadable kernel modules in the standard directories or those
added by plugins.
Logging
--log-level {debug,info,warning,error,critical,none}
Log messages of at least the given level to standard error. The default is warning.
-q, --quiet
Don't print any logs or download progress. This is equivalent to --log-level none.
Generic Information
-h, --help
Show a help message and exit.
--version
Show drgn's version information and exit.
COPYRIGHT
Omar Sandoval
0.0.32 Jul 18, 2025 DRGN(1)