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 ×îÐÂÎÄÕ : linux

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mkdir -m 775 filename
-m : ÉèÖÃÎļþµÄȨÏÞ¡£Ö±½ÓÉèÖ㬲»ÐèҪĬÈÏȨÏÞ¡£
[root@localhost home]# mkdir text1
[root@localhost home]# mkdir -m 777 text2
[root@localhost home]# ls -l
drwxr-xr-x 2 root root 4096 2010-1-19 08:03 text1
drwxrwxrwx 2 root root 4096 2010-1-19 08:04 text2  ......

Linuxϳ£ÓõĹػúʵÀý

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[root@localhost /]# shutdown [-tÃë] [-arkhcncfF] [ʱ¼ä] [ÌáʾÐÅÏ¢]
[root@localhost /]# shutdown -h 10 'I will shutdown after 10 mins'
-t sec : -t ºó¼ÓÃëÊý£¬¼´‘¹ý¼¸ÃëÖÓºó¹Ø»ú’µÄÒâ˼¡£
-k : ²»ÒªÕæµÄ¹Ø»ú£¬Ö»ÊÇ·¢ËÍÌáʾÐÅÏ¢¡£
-r : ÔÚ½«ÏµÍ³µÄ·þÎñ¹ØµôÖ®ºó¾ÍÖØÐÂÆô¶¯¡£
-h : ÔÚ½«ÏµÍ³µÄ·þÎñ¹ØµôÖ®ºó¾Í¹Ø»ú¡£
-n : ²»Òª½ø¹ýinit³ÌÐò£¬Ö±½ÓÒÔshutdown¹Ø»ú¡£
-f : ¹Ø»ú²¢Æô¶¯ºó£¬Ç¿ÖÆÂÔ¹ýfsckµÄ´ÅÅ̼ì²é
-F : ÏµÍ³ÖØÐÂÆô¶¯ºó£¬Ç¿ÖƽøÐÐfsckµÄ´ÅÅ̼ì²é
-c : È¡ÏûÒѾ­ÔÚ½øÐеÄshutdownÃüÁî·û
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[root@localhost /]#shutdown -h now
ϵͳÔÚ½ñÌìµÄ20:25¹Ø»ú
[root@localhost /]#shutdown -h 20:25
ϵͳÔÙ¹ý10·ÖÖÓºóÖØÐÂÆô¶¯
[root@localhost /]#shutdown -h +10
ϵͳÁ¢¼´ÖØÐÂÆô¶¯
[root@localhost /]#shutdown -r now
ÔÙ¹ý30·ÖÖÓϵͳ»áÖØÐÂÆô¶¯£¬²¢ÏÔʾºóÃæµÄÐÅÏ¢
[root@localhost /]#shutdown -r +30 'The system will reboot'
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[root@localhost /]#shutdown -r +30 'The system will reboot'  ......

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8259AоƬÖжϺÅÓëlinux ϵͳÖжϺŵĶÔÓ¦¹ØÏµ

ICW2 ÓÃÓÚÉèÖÃоƬËͳöµÄÖжϺŵĸß5λ¡£Ê²Ã´ÒâË¼ÄØ£¬¾ÍÊÇ˵´ÓÖжϿØÖÆÆ÷·¢³öµÄÖжÏÐźŵĸß5λ¾ÍÊÇÔÚICW2ÀïÉèÖõġ£
ÔÚlinux 0.11Àïϵͳ°ÑÖ÷ƬµÄICW2ÉèÖÃΪ0x20£¬¾Í±íʾÖжÏÇëÇóIR0~IR7ÖжϺŵķ¶Î§ÊÇ0x20~0x27(8259AоƬ²úÉúµÄIRQºÅ±ØÐëÊÇÁ¬ÐøµÄ£¬ËùÒÔÒ²Ö»ÐèÒªÉèÖÃÆðʼºÅ¾ÍokÁË£¡) ......

cygwin ʹÓÃmake menuconfig ÅäÖÃlinuxÎÊÌâ¼°½â¾ö·½·¨

ÔÚÖ´ÐÐmake menuconfig ÃüÁî½øÐÐÄÚºËÅäÖÃʱ£¬Êä³öÏÂÃæµÄ³ö´íÐÅÏ¢£º
yyh:~/clfs/sources/linux-2.6.17.13$ make ARCH=i386 CROSS_COMPILE=${CLFS_TARGET}- menuconfig
HOSTCC scripts/basic/fixdep
HOSTCC scripts/basic/split-include
HOSTCC scripts/basic/docproc
HOSTCC scripts/kconfig/conf.o
HOSTCC scripts/kconfig/kxgettext.o
HOSTCC scripts/kconfig/mconf.o
SHIPPED scripts/kconfig/zconf.tab.c
SHIPPED scripts/kconfig/lex.zconf.c
SHIPPED scripts/kconfig/zconf.hash.c
HOSTCC scripts/kconfig/zconf.tab.o
HOSTLD scripts/kconfig/mconf
scripts/kconfig/mconf.o:mconf.c:(.text+0xf63): undefined reference to `_libintl_
gettext'
scripts/kconfig/mconf.o:mconf.c:(.text+0x1011): undefined reference to `_libintl
_gettext'
scripts/kconfig/mconf.o:mconf.c:(.text+0x116c): undefined reference to `_libintl
_gettext'
scripts/kconfig/mconf.o:mconf.c:(.text+0x11a1): undefined reference to `_libintl
_gettext'
scripts/kconfig/mconf.o:mconf.c:(.text+0x11c1): undefined reference to `_libint ......

LinuxÏÂÍê³ÉµÄÒ»¸ö×÷Òµ³ÌÐò

Îĵµ´´½¨ÈÕÆÚ£º2010-02-19
    01    // P173: 2.±à³ÌÌâ (7)
    02   
    03    // The beginning of C program: test06-07.c.
    04   
    05    // Header files included.
    06    #include <stdio.h>
    07   
    08    // Macro definition.
    09    #define MAX_SIZE 100
    10   
    11    // No.1: Subroutine: float rounding ( float f_num );
    12    float  rounding ( float f_num )
    13    {
    14        long int    temp=0;
    15        temp = (long int) (f_num * 100); ......
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