Linuxϵͳdameon³ÌÐòµÄcore dumpÉèÖÃ
To enable dumps for every daemon:
ulimit -c unlimited >/dev/null 2>&1 (-c maximum size of core files)
ulimit -S -c ${DAEMON_COREFILE_LIMIT:-0} >/dev/null 2>&1
Dump for system
:
DAEMON_COREFILE_LIMIT='unlimited'
The same for every daemon (in /etc/sysconfig/_daemon_): DAEMON_COREFILE_LIMIT='unlimited'
Dump for SUID programs:
echo 1 > /proc/sys/kernel/suid_dumpable
In /etc/sysctl.conf:
kernel.core_uses_pid = 1
kernel.suid_dumpable = 1
and sysctl -p
Ïà¹ØÎĵµ£º
Ò»¡¢Äں˵ĻñµÃ
¿ÉÒÔ´ÓÍøÉÏÏÂÔØÄÚºËÎļþ£¬http://www.kernel.org¡£Èç¹ûÊÇΪÁËÁ·Ï°£¬¾¡Á¿ÏÂÔØ£².4.xµÄÄںˡ£ÒòΪ2.6.xµÄÄں˱Ƚϴ󣬵±È»±àÒëÒ²ÐèÒª¸ü¶¼µÄʱ¼ä¡£
¶þ¡¢Äں˵ıàÒë
LinuxÄں˵ıàÒë²Ëµ¥Ö÷ÒªÓÐÈý¸ö°æ±¾£º
£±£©make config£º½øÈëÃüÁîÐУ¬¿ÉÒÔÒ»ÐÐÒ»ÐеÄÅäÖá£
£²£©make menuconfig£º¿ª·¢ÈËÔ±±È½ÏÊìÏ ......
LinuxÖÐwaitÓ÷¨£º
ϵͳÖеĽ©Ê¬½ø³Ì¶¼ÒªÓÉwaitϵͳµ÷ÓÃÀ´»ØÊÕ¡£
º¯ÊýÔÐÍ£º
#include<sys/types.h>
#include<sys/wait.h>
pid_t wait(int *status);
½ø³ÌÒ»µ©µ÷ÓÃÁËwait¾ÍÁ¢¼´×èÈû×Ô¼º£¬ÓÉwait×Ô¶¯·ÖÎöÊÇ·ñµ±Ç°½ø³ÌµÄij¸ö×Ó½ø³ÌÒѾÍ˳ö£¬Èç¹ûÈÃËüÕÒµ½ÁËÕâÑùÒ»¸öÒѾ±ä³É½©Ê¬µÄ×Ó½ø³Ì£¬wait¾Í»áÊÕ¼¯Õâ ......
ÏµÍ³ÖØÆôºó·¢ÏÖ£¬ApacheÆô¶¯Ê§°Ü
±¨´íÈçÏ£º
# ./apachectl start
(98)Address already in use: make_sock: could not bind to address [::]:80
no listening sockets available, shutting down
Unable to open logs
²éÁËÏÂ80
#netstat -Inp|grep 80
tcp 0 &n ......
iptables-save > ipt.v1.0
iptables-save > ipt.v1.1
iptables-restore < ipt.v1.0
cp /etc/sysconfig/iptables iptables.raw
service iptables save
ipαװµÄ½Å±¾Îļþiptables_masquerade
#!/bin/bash
//ÉèÖÃlinuxϵͳÔÊÐíip°üµÄת·¢
echo "1" > /proc/sys/net/ipv4/ip_forward
//¼ÓÔØÊµÏÖ ......
linuxÏÂĬÈÏÖ»ÄܽâѹzipѹËõÎļþ£¬¶ørarÎļþĬÈÏûÓнâѹ֧³ÖµÄ¹¤¾ß£¬ÕâÀïÌṩһ¸ö¼òµ¥µÄ·½Ê½£¬°²×°rar¹¤¾ß£¬Ö§³ÖlinuxϽâѹrarÎļþ¡£
1£ºÊ×ÏÈÏÂÔØrar½âѹ¹¤¾ß£¬ÕâÀïÓà rarlinux-3.6.b6.tar.gz£¬¸ø³öÒ»¸öÍøÓÑÌṩµÄ°æ±¾ÏÂÔØµØÖ·£º
http://blogimg.chinaunix.net/blog/upfile2/080226173046.gz
2£º½ÓÏÂÀ´Ö´ÐÐÈçϲÙ×÷
t ......