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kpld's Spaceprint hash in perl debuggerx %h
x \%h 9/29/2009 close monitor under LinuxIn X:
xset dpms force off
In console:
if [ ${TERM} = "linux" ]; then
setterm -blank 1 -powersave powerdown
fi
These need ACPI support, you can use cmd:
cat /proc/acpi/info
to verify this feature.
This cmd should show "version: 20081214" similar string. 9/27/2009 Argument list too long error in shell and solutionuse cmd "getconf ARG_MAX" to get this limit
this macro is defined in "include/linux/limits.h"
solution:
1.
find /path/ |xargs -n 100 rm
2.
for fileset in a b c d e f g h i j k l m n o p q r s t v w x z
do /bin/rm $fileset* done 3.
ls|xargs rm
4. modify kernel at "include/linux/binfmts.h"
#define MAX_ARG_PAGES 32 // modify 32 to larger
9/13/2009 nptl的问题我的显卡是R300系列，用的开源ati驱动，glxgear跑不起来，3D游戏也不能玩。google了半天，说是去掉nptl这个USE，只好这样。重新emerge了一下，需要编译gcc、mesa、xorg-server这三个包。 弄完之后，glxgear了一下，2300多分，相当不错。马上打开glest，果然比较流畅。 查了下nptl，Enable support for Native POSIX Threads Library, the new threading module (requires linux-2.6 or better usually)，这个怎么会影响显卡驱动效果呢？不解。 9/11/2009 Magic System Request查看：cat /proc/sys/kernel/sysrq
设置：CONFIG_MAGIC_SYSRQ
R-E-I-S-U-B 这个序列的推荐使用方式是：R – 1 秒 – E – 30 秒 – I – 10 秒 – S – 5 秒 – U – 5 秒 – B，而不是一气呵成地按下这六个键
说明：
R - 把键盘设置为 ASCII 模式
E - 向除 init 以外所有进程发送 SIGTERM 信号
I - 向除 init 以外所有进程发送 SIGKILL 信号
S - 磁盘缓冲区同步
U - 重新挂载为只读模式
B - 立即重启系统 user & group commandnewgrp: change primary group ID to exec command
sg group -c command: change group ID to exec command
vigr: edit /etc/group
vipw: edit /etc/passwd
groups: show groups of user
pwck: verify passwd file
grpck: verify group file
setfacl: set file acl
getfacl: get file acl
9/4/2009 screen的高级用法：multiuser要使用multiuser模式，首先必须
# chmod u+s /usr/bin/screen
user1:
screen -S window1
Ctrl+a
:multiuser on
:acladd user2
:aclchg user -w "#"
Ctrl+a Ctrl+d
user2:
screen -r user1/window1
这样user1在屏幕上操作的步骤，user2就能看到了，而且user2去掉了"写"权限，他只能看user1操作，退出使用Ctrl+a Ctrl+d键。
9/2/2009 useful unix command1. apropos ;;lookup command
2. pgrep ;;find process
3. pwgen ;;generate secure password
4. multitail ;;view multi files
5. zcat,zgrep,zless,zdiff ;;operator compressed file directly, without uncompress them 3/2/2009 彩色的man pagesexport PAGER="/usr/bin/less -s"
export BROWSER="$PAGER" export LESS_TERMCAP_mb=$'\E[01;34m' export LESS_TERMCAP_md=$'\E[01;34m' export LESS_TERMCAP_me=$'\E[0m' export LESS_TERMCAP_se=$'\E[0m' export LESS_TERMCAP_so=$'\E[01;44;33m' export LESS_TERMCAP_ue=$'\E[0m' export LESS_TERMCAP_us=$'\E[01;33m' 11/28/2008 免费注册Unix帐号http://www.prunk.si/mediawiki/index.php/Free_List http://bbs.chinaunix.net/viewthread.php?tid=1126814 5/29/2008 迅雷、快车、QQ下载地址分析迅雷：
加密："thunder://".base64_encode("AA".$txt1."ZZ"); 解密：substr(base64_decode(str_ireplace("thunder://","",$txt1)),2,-2); flashget：
加密："flashget://".base64_encode($txt2); 解密：str_ireplace("[FLASHGET]","",base64_decode(str_ireplace("flashget://","",$txt2))); QQ： 加密："qqdl://".base64_encode($txt3); 解密：base64_decode(str_ireplace("qqdl://","",$txt3)); 查看进程时间ps axfo time,stime,start_time,start,pid,comm pstreepstree -G： use VT100 line drawing characters |
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