Editing Dbx (debugger)

{{Short description|Source-level debugger}}
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{{Infobox Software 
| name                   = dbx
| logo                   = 
| screenshot             = 
| screenshot size        = 
| caption                = 
| author                 = Mark Linton
| developer              = [[Oracle Corporation]]
| released               = {{Start date and age|1981}}
| latest release version = 
| latest release date    = 
| operating system       = [[Unix]] and [[Unix-like]]
| genre                  = [[Debugger]]
| license                = Free for download and use as described in the [[CDDL|Sun Studio product license]].
| website                = 
}}           
'''dbx''' is a source-level [[debugger]] found primarily on [[Solaris (operating system)|Solaris]], [[AIX operating system|AIX]], [[IRIX]], [[Tru64 UNIX]], [[Linux]] and [[Berkeley Software Distribution|BSD]] operating systems. It provides symbolic debugging for programs written in [[C (programming language)|C]], [[C++]], [[Fortran]], [[Pascal programming language|Pascal]] and [[Java (programming language)|Java]]. Useful features include stepping through programs one [[source code|source line]] or [[machine instruction]] at a time. In addition to simply viewing operation of the program, [[Variable (programming)|variables]] can be manipulated and a wide range of expressions can be evaluated and displayed.

==History==
dbx was originally developed at [[University of California, Berkeley]], by Mark Linton during the years 1981–1984<ref>{{cite conference |last1=Linton |first1=Mark A. |s2cid=15074926 |date=1990 |title=The Evolution of Dbx |book-title=USENIX Summer |pages=211–220 |conference=USENIX Summer 1990 Technical Conference |citeseerx=10.1.1.38.5985 }}</ref> and subsequently made its way to various vendors who had licensed BSD.

==Availability==
dbx is provided with [[AIX]],<ref>{{cite web |url=https://www.ibm.com/docs/en/aix/7.3?topic=programs-dbx-symbolic-debug-program-overview |title=AIX 7.3 dbx symbolic debug program overview |publisher=[[IBM]]}}</ref> and was also provided with [[IRIX]]<ref>[https://web.archive.org/web/20160119165855/http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=man&fname=/usr/share/catman/u_man/cat1/dbx.z {{mono|dbx(1)}}] : Provides source-level debugging - SGI techpubs library</ref> and [[Tru64 UNIX]].<ref>[https://web.archive.org/web/20040626133213/http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/MAN/MAN1/0554____.HTM {{mono|dbx(1)}}] : source level debugger - HP Tru64 UNIX Section 1 Reference Pages</ref>

It is included as part of the [[Oracle Solaris Studio]] product from [[Oracle Corporation]],<ref>{{cite web |url=https://docs.oracle.com/cd/E77782_01/html/E77793/index.html |title=Oracle Developer Studio 12.6: Debugging a Program With dbx |publisher=[[Oracle Corporation]]}}</ref> and is supported on both Solaris and [[Linux]]. It supports programs compiled with the Oracle Solaris Studio compilers and [[GNU Compiler Collection|GCC]].

It is also available on [[IBM]] [[z/OS]] systems, in the [[UNIX System Services]] component.<ref>{{cite web |url=https://www.ibm.com/docs/en/SSLTBW_3.1.0/pdf/bpxa600_v3r1.pdf |title=z/OS 3.1 UNIX System Services Programming Tools |publisher=[[IBM]]}}</ref> dbx for z/OS can debug programs written in C and C++, and can also perform machine level debugging. As of z/OS V1R5, dbx is able to debug programs using the [[DWARF]] debug format. z/OS V1R6 added support for debugging [[64-bit]] programs.

GCC removed support for dbx in release 13.<ref>{{cite web | title=GCC Change notes | url=https://gcc.gnu.org/gcc-13/changes.html}}</ref>

==See also==
* [[Modular Debugger]] (mdb)
* [[GNU Debugger]]

== References ==
{{Reflist}}

==External links==
* [https://www.ibm.com/docs/en/SSLTBW_3.1.0/pdf/bpxa600_v3r1.pdf z/OS 3.1 UNIX System Services Programming Tools] - includes dbx
* [https://www.ibm.com/docs/en/aix/7.3?topic=programs-dbx-symbolic-debug-program-overview AIX 7.3 dbx symbolic debug program overview]
* [https://docs.oracle.com/cd/E77782_01/html/E77793/index.html Oracle Developer Studio 12.6: Debugging a Program With dbx]
* {{man/format|1|dbx|https://docs.oracle.com/cd/E77782_01/html/E77803/dbx-1.html|source-level debugging tool|Oracle Developer Studio 12.6 Man Pages}}

[[Category:Debuggers]]
[[Category:Unix programming tools]]

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