Core dump - Revision history

Anonymoususer852: Fix on referenced link.

2025-08-15T18:07:34Z

Fix on referenced link.

Anonymoususer852: /* Format */ Add reference to where core files generally use the standard executable image-format, and that ELF is used on Unix-like systems.

2025-08-15T18:06:31Z

‎Format: Add reference to where core files generally use the standard executable image-format, and that ELF is used on Unix-like systems.

Anonymoususer852: Make the word "Linux" a link.

2025-08-15T08:37:27Z

Make the word "Linux" a link.

Anonymoususer852: Note about compressed core dumps in Linux. Add references indicating as such.

2025-08-15T08:36:25Z

Note about compressed core dumps in Linux. Add references indicating as such.

Anonymoususer852: Changed image to larger variant.

2025-08-15T08:22:21Z

Changed image to larger variant.

Anonymoususer852: Add icon from Apache Web server as this icon is PD licensed. Add reference to its usage in the same Web server.

2025-08-15T05:11:09Z

Add icon from Apache Web server as this icon is PD licensed. Add reference to its usage in the same Web server.

Anonymoususer852: /* Software */ add `coredumpctl` for easier management of core dumps.

2025-08-10T01:23:08Z

‎Software: add <code>coredumpctl</code> for easier management of core dumps.

Jsummers at 20:27, 5 May 2016

2016-05-05T20:27:21Z

Jsummers: /* Resources */

2015-10-30T23:36:43Z

‎Resources

Alanc: Created page with "{{FormatInfo |formattype=electronic |subcat=Development }} A '''core dump''' file is the saved image of a program's memory state from a Unix-style OS, usually made when it cra..."

2014-12-28T17:23:22Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Development }} A '''core dump''' file is the saved image of a program's memory state from a Unix-style OS, usually made when it cra..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Development
}}
A '''core dump''' file is the saved image of a program's memory state from a Unix-style OS, usually made when it crashes, so that a developer can debug it. The name refers to the days when computers used [[Wikipedia:Magnetic-core memory|magnetic core memory]] for their RAM.

File names are usually just <code>core</code> or start with a prefix of <code>core.</code>, depending on system configuration.

== Format ==
Core files are often in a version or extension of the [[Executables|OS executable file format]], such as [[ELF]].

== Specifications ==
* [https://www.freebsd.org/cgi/man.cgi?query=core&sektion=5 FreeBSD man pages: core(5)]
* [http://man7.org/linux/man-pages/man5/core.5.html Linux man pages: core(5)]
* [https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man5/core.5.html Mac OS X man pages: core(5)]
* [http://docs.oracle.com/cd/E36784_01/html/E36882/core-4.html Oracle Solaris 11.2 man pages: core(4)]

== Software ==

Core files are usually generated by the OS itself, and can be read by debugging tools for the system they were created on.

* [[GDB]]

== Resources ==
* [[Wikipedia:Core_dump]]

[[Category:Sun]]

@@ Line 12: / Line 12: @@
 == Format ==
-Core files are often in a version or extension of the [[Executables|OS executable file format]], such as [[ELF]].<ref>[[wikipedia:core_dump#Format Format section - Core dump - Wikipedia]]</ref>
+Core files are often in a version or extension of the [[Executables|OS executable file format]], such as [[ELF]].<ref>[[wikipedia:core_dump#Format|Format section - Core dump - Wikipedia]]</ref>
 == Specifications ==

@@ Line 9: / Line 9: @@
 File names are usually just <code>core</code> or start with a prefix of <code>core.</code>, depending on system configuration.
-In modern Linux environments, particularly those using <code>systemd</code>, core dumps are generally compressed by default. This feature was introduced in v215,<ref>[https://www.freedesktop.org/software/systemd/man/latest/coredump.conf.html#Compress= Compress section - coredump.conf.html - systemd manual]</ref> which was released on 2014-07-03.
+In modern [[Linux]] environments, particularly those using <code>systemd</code>, core dumps are generally compressed by default. This feature was introduced in v215,<ref>[https://www.freedesktop.org/software/systemd/man/latest/coredump.conf.html#Compress= Compress section - coredump.conf.html - systemd manual]</ref> which was released on 2014-07-03.
 == Format ==

← Older revision		Revision as of 08:36, 15 August 2025
Line 8:		Line 8:

	File names are usually just <code>core</code> or start with a prefix of <code>core.</code>, depending on system configuration.		File names are usually just <code>core</code> or start with a prefix of <code>core.</code>, depending on system configuration.
		+
		+	In modern Linux environments, particularly those using <code>systemd</code>, core dumps are generally compressed by default. This feature was introduced in v215,<ref>[https://www.freedesktop.org/software/systemd/man/latest/coredump.conf.html#Compress= Compress section - coredump.conf.html - systemd manual]</ref> which was released on 2014-07-03.

	== Format ==		== Format ==

@@ Line 2: / Line 2: @@
 |formattype=electronic
 |subcat=Development
-|image=Bomb.png
+|image=Bomb-large.png
 |caption=Icon used to describe core files in Apache Web server<ref>[https://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/extra/httpd-autoindex.conf.in httpd-autoindex.conf.in - Apache SVN]</ref>
 }}

@@ Line 2: / Line 2: @@
 |formattype=electronic
 |subcat=Development
 }}
 A '''core dump''' file is the saved image of a program's memory state from a Unix-style OS, usually made when it crashes, so that a developer can debug it.  The name refers to the days when computers used [[Wikipedia:Magnetic-core memory|magnetic core memory]] for their RAM.
@@ Line 29: / Line 31: @@
 * [[Wikipedia:Core dump]]
 * [http://backtrace.io/blog/blog/2015/10/03/whats-a-coredump/ FreeBSD Userspace Coredumps]
 [[Category:Sun]]
 [[Category:File formats with a distinctive filename]]

← Older revision		Revision as of 01:23, 10 August 2025
Line 21:		Line 21:

	* [[GDB]]		* [[GDB]]
		+
		+	In modern [[Linux]] environments, those with [https://systemd.io/ <code>systemd</code>] in particular, core files can be centrally managed as a benefit.
		+
		+	* [https://github.com/systemd/systemd systemd] → <code>coredumpctl</code>

	== Resources ==		== Resources ==

← Older revision		Revision as of 20:27, 5 May 2016
Line 27:		Line 27:

	[[Category:Sun]]		[[Category:Sun]]
		+	[[Category:File formats with a distinctive filename]]

@@ Line 23: / Line 23: @@
 == Resources ==
-* [[Wikipedia:Core_dump]]
+* [[Wikipedia:Core dump]]
 [[Category:Sun]]