I discovered that gdb has list of commands available through the help command. After starting gdb I can type set output-radix 16 John On Fri, Jul 05, 2013 at 04:50:41PM +0300, Shlomi Fish wrote: > Hi John, > > On Thu, 4 Jul 2013 23:49:37 -0500 > "John J. Boyer" <john.boyer@xxxxxxxxxxxxxxxxx> wrote: > > > > > Is it possible to tell gdb to show the values of variables in > > hexadecimal rather than decimal? I can't find anything on the man page. > > > > Use the /x option: > > [SHELL] > shlomif[fcs]:$trunk/fc-solve/source/B$ gdb ./fc-solve > GNU gdb (GDB) 7.6-4.mga4 (Mageia release 4) > Copyright (C) 2013 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured as "x86_64-mageia-linux-gnu". > For bug reporting instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>... > Reading symbols > from /home/shlomif/progs/freecell/git/fc-solve/fc-solve/source/B/fc-solve...done. > (gdb) p 100 > $1 = 100 > (gdb) p /x 100 > $2 = 0x64 > (gdb) help p > Print value of expression EXP. > Variables accessible are those of the lexical environment of the selected > stack frame, plus all those whose scope is global or an entire file. > > $NUM gets previous value number NUM. $ and $$ are the last two values. > $$NUM refers to NUM'th value back from the last one. > Names starting with $ refer to registers (with the values they would have > if the program were to return to the stack frame now selected, restoring > all registers saved by frames farther in) or else to debugger > "convenience" variables (any such name not a known register). > Use assignment expressions to give values to convenience variables. > > {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP. > @ is a binary operator for treating consecutive data objects > anywhere in memory as an array. FOO@NUM gives an array whose first > element is FOO, whose second element is stored in the space following > where FOO is stored, etc. FOO must be an expression whose value > resides in memory. > > EXP may be preceded with /FMT, where FMT is a format letter > but no count or size letter (see "x" command). > (gdb) > [/SHELL] > > You can find more information about using gdb from its online manual: > > http://www.gnu.org/software/gdb/documentation/ > > And from these resources: > > * http://tel.foss.org.il/advanced.html (search for the "Advanced GDB" row). > > * http://www.haifux.org/lectures/210/ (and > http://www.mail-archive.com/haifux@xxxxxxxxxx/msg03722.html ) > > Hope it helps. > > Regards, > > Shlomi Fish > > -- > ----------------------------------------------------------------- > Shlomi Fish http://www.shlomifish.org/ > Understand what Open Source is - http://shlom.in/oss-fs > > <rindolf> If you repeat a scene 50k times, then the movie will have less > entropy and will compress better. ( irc://irc.freenode.org/#perlcafe ) > > Please reply to list if it's a mailing list post - http://shlom.in/reply . > > _______________________________________________ > Blinux-list mailing list > Blinux-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/blinux-list -- John J. Boyer; President, Chief Software Developer Abilitiessoft, Inc. http://www.abilitiessoft.com Madison, Wisconsin USA Developing software for people with disabilities _______________________________________________ Blinux-list mailing list Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list