Manual: gstack

GSTACK(1)				    GNU Development Tools				   GSTACK(1)

NAME
       gstack - Print a stack trace of a running program

SYNOPSIS
       gstack [-h | --help] [-v | --version] pid

DESCRIPTION
       Print a stack trace of a running program with process ID pid.  If the process is multi-threaded,
       gstack outputs backtraces for every thread which exists in the process.

       The script invokes GDB, attaches to the given process ID, prints the stack trace, and detaches from
       the process.

       gstack exits with non-zero status if "gdb" was unable to attach to the given process ID for any
       reason, such as a non-existent process ID or insufficient privileges to attach to the process.

OPTIONS
       --help
       -h  List all options, with brief explanations.

       --version
       -v  Print version information and then exit.

ENVIRONMENT
       AWK Full	 file  name  for  an Awk interpreter to use.  If not set, PATH will be searched for an "awk"
	   program.

       GDB Full file name for a GDB executable to use to generate stack backtraces.  If not set,  PATH	will
	   be searched for a "gdb" program.

       GDBARGS
	   Optional arguments to be passed to the "gdb" program.

SEE ALSO
       The  full  documentation for GDB is maintained as a Texinfo manual.  If the "info" and "gdb" programs
       and GDB's Texinfo documentation are properly installed at your site, the command

	       info gdb

       should give you access to the complete manual.

       Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland  H.	Pesch,	July
       1991.

COPYRIGHT
       Copyright (c) 1988-2025 Free Software Foundation, Inc.

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free
       Documentation  License,	Version	 1.3 or any later version published by the Free Software Foundation;
       with the Invariant Sections being "Free Software" and "Free Software Needs Free Documentation",	with
       the Front-Cover Texts being "A GNU Manual," and with the Back-Cover Texts as in (a) below.

       (a)  The	 FSF's	Back-Cover Text is: "You are free to copy and modify this GNU Manual.  Buying copies
       from GNU Press supports the FSF in developing GNU and promoting software freedom."

gdb-17.1					 2026-01-30					   GSTACK(1)