which、whereis、locate跟find這四個都是查詢的指令。
which是找指令，所以它只會到$PATH環境變數設定下的路徑去尋找。
whereis跟locate是找檔案，但是這兩個指令並非直接在硬碟上做搜尋，而是尋找已經建立好的「/var/lib/slocate.db」的資料庫做搜尋。可以直接下updatedb更新資料庫，或是在/etc/cron.daily/slocate.cron設定更新排程。linux剛安裝好時資料庫尚未建立，若是沒有執行updatedb的動作的話，locate指令是找不到任何資料。此外whereis只會找到名稱完全符合的檔案，locate則會找出含有搜尋字串的檔案。
find就很花時間，會整個硬諜搜尋檔案，因此也很傷硬諜。
星期三, 8月 09, 2006
星期二, 8月 08, 2006
星期一, 8月 07, 2006
[Linux]開機設定檔/etc/inittab
# inittab This file describes how the INIT process should set up
# the system in a certain run-level.
#
# Author: Miquel van Smoorenburg,
# Modified for RHS Linux by Marc Ewing and Donnie Barnes
#
# Default runlevel. The runlevels used by Mandrakelinux are:
# 0 - halt (Do NOT set initdefault to this)
# 1 - Single user mode
# 2 - Multiuser, without NFS (The same as 3, if you do not have networking)
# 3 - Full multiuser mode
# 4 - unused
# 5 - X11
# 6 - reboot (Do NOT set initdefault to this)
#
id:5:initdefault:
#設定開機後的執行模式(run-level)，一般都是3(文字模式)，5(視窗模式)
# System initialization.系統初始化，想知道做了什麼設定，看看/etc/rc.d/rc.sysinit這個檔就知道了
si::sysinit:/etc/rc.d/rc.sysinit
l0:0:wait:/etc/rc.d/rc 0
l1:1:wait:/etc/rc.d/rc 1
l2:2:wait:/etc/rc.d/rc 2
l3:3:wait:/etc/rc.d/rc 3
l4:4:wait:/etc/rc.d/rc 4
l5:5:wait:/etc/rc.d/rc 5
l6:6:wait:/etc/rc.d/rc 6
# Trap CTRL-ALT-DELETE
ca::ctrlaltdel:/sbin/shutdown -t3 -r now
#是否啟用CT
# When our UPS tells us power has failed, assume we have a few minutes
# of power left. Schedule a shutdown for 2 minutes from now.
# This does, of course, assume you have powerd installed and your
# UPS connected and working correctly.
pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting Down"
# If power was restored before the shutdown kicked in, cancel it.
pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled"
# Run gettys in standard runlevels
1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6
#開完機就會有六個終端機，可用Alt-F[1-6]切換，如果執行X-window，就是tty7，要從X-window切換到其他視窗要多按CTRL鍵
# Single user mode
~~:S:wait:/bin/sh
# the system in a certain run-level.
#
# Author: Miquel van Smoorenburg,
# Modified for RHS Linux by Marc Ewing and Donnie Barnes
#
# Default runlevel. The runlevels used by Mandrakelinux are:
# 0 - halt (Do NOT set initdefault to this)
# 1 - Single user mode
# 2 - Multiuser, without NFS (The same as 3, if you do not have networking)
# 3 - Full multiuser mode
# 4 - unused
# 5 - X11
# 6 - reboot (Do NOT set initdefault to this)
#
id:5:initdefault:
#設定開機後的執行模式(run-level)，一般都是3(文字模式)，5(視窗模式)
# System initialization.系統初始化，想知道做了什麼設定，看看/etc/rc.d/rc.sysinit這個檔就知道了
si::sysinit:/etc/rc.d/rc.sysinit
l0:0:wait:/etc/rc.d/rc 0
l1:1:wait:/etc/rc.d/rc 1
l2:2:wait:/etc/rc.d/rc 2
l3:3:wait:/etc/rc.d/rc 3
l4:4:wait:/etc/rc.d/rc 4
l5:5:wait:/etc/rc.d/rc 5
l6:6:wait:/etc/rc.d/rc 6
# Trap CTRL-ALT-DELETE
ca::ctrlaltdel:/sbin/shutdown -t3 -r now
#是否啟用CT
# When our UPS tells us power has failed, assume we have a few minutes
# of power left. Schedule a shutdown for 2 minutes from now.
# This does, of course, assume you have powerd installed and your
# UPS connected and working correctly.
pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting Down"
# If power was restored before the shutdown kicked in, cancel it.
pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled"
# Run gettys in standard runlevels
1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6
#開完機就會有六個終端機，可用Alt-F[1-6]切換，如果執行X-window，就是tty7，要從X-window切換到其他視窗要多按CTRL鍵
# Single user mode
~~:S:wait:/bin/sh
[Life]中暑了
上個禮拜跑去北斗國小參加自由軟體與DRBL研習，第一次感受到參與電腦研習活動竟是如此煎熬，參與研習活動的學員老師們，全部關在一個密閉空間內，吹著32度C的「冷」氣，「冷」到整個人昏昏沉沉，熱汗直冒，最後熱到受不了，把窗戶打開後才比較舒服些。一連參加三天的研習後，已經感到力不從心，正式宣告中暑了。北斗國小雖然貴為研習中心，但是整體電腦教室環境，實在很難令人感到舒服，我發誓我發誓，以後再也不要去北斗國小參加研習了。
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