参考URL
パクりました。
http://blog.akagi.jp/archives/128.html
gdb
The GNU Project Debugger
Linuxで標準的に使われるフリーのデバッグ用ソフト(デバッガ)
インストールと確認方法
### インストール ### root@hostname:/home/shimizu# aptitude install gdb 以下の新規パッケージがインストールされます: gdb gdbserver{a} libc6-dbg{a} ... root@hostname:/home/shimizu# ps afx | grep [a]pache2 3627 ? Ss 1:05 /usr/sbin/apache2 -k start 15435 ? S 0:00 \_ /usr/sbin/apache2 -k start 15442 ? S 0:00 \_ /usr/sbin/apache2 -k start ### ダンプする ### root@hostname:/home/shimizu# gdb GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 Copyright (C) 2014 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-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word". (gdb) attach 3627 Attaching to process 3627 Reading symbols from /usr/sbin/apache2...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libpcre.so.3...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libpcre.so.3 ... (gdb) gcore memory.text warning: target file /proc/3627/cmdline contained unexpected null characters warning: Memory read failed for corefile section, 8192 bytes at 0x7ffc84899000. Saved corefile memory.text (gdb) detach Detaching from program: /usr/sbin/apache2, process 3627 (gdb) quit ### バイナリエディタで閲覧する ### root@hostname:/home/shimizu# od memory.text 417444000 077457 000000 062141 072144 070171 000145 063456 000172 417444020 000000 000000 072056 075147 077400 000000 062141 072144 417444040 070171 000145 061056 031172 000000 000000 062141 066144 ...