菜鳥MIS的學習筆記

做完emerge -uD world之後發現man不能使用了
Huma ~ # man ls
/usr/bin/gtbl: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory groff: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

查了一下 Huma ~ # file /usr/bin/gtbl
/usr/bin/gtbl: symbolic link to `tbl'

Huma ~ # ldd /usr/bin/gtbl
        linux-gate.so.1 =>  (0xffffe000)
        libstdc++.so.6 => not found
        libm.so.6 => /lib/libm.so.6 (0xb8099000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb808b000)
        libc.so.6 => /lib/libc.so.6 (0xb7f42000)
        /lib/ld-linux.so.2 (0xb80c5000)

發現是lib連結出了問題

解決的方法: Huma ~ # ldconfig

Huma ~ # ldd /usr/bin/gtbl
        linux-gate.so.1 =>  (0xffffe000)
        libstdc++.so.6 => /usr/lib/gcc/i686-pc-linux-gnu/4.4.3/libstdc++.so.6 (0xb7e21000)
        libm.so.6 => /lib/libm.so.6 (0xb7dfc000)
        libgcc_s.so.1 => /usr/lib/gcc/i686-pc-linux-gnu/4.4.3/libgcc_s.so.1 (0xb7dde000)
        libc.so.6 => /lib/libc.so.6 (0xb7c95000)
        /lib/ld-linux.so.2 (0xb7f17000)

指令
user@linux:~$ hdparm -i /dev/sd*
/dev/sda: Permission denied

需切換成root
root@linux:~# hdparm -i /dev/sd*

顯示資訊如下:

/dev/sdb:
 Model=WDC WD1001FALS-00J7B0                   , FwRev=05.00K05, SerialNo=     WD-WMATV0772502
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
 BuffType=unknown, BuffSize=32767kB, MaxMultSect=16, MultSect=?0?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7
 * signifies the current active mode

/dev/sdb1:
 Model=WDC WD1001FALS-00J7B0                   , FwRev=05.00K05, SerialNo=     WD-WMATV0772502
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
 BuffType=unknown, BuffSize=32767kB, MaxMultSect=16, MultSect=?0?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7
 * signifies the current active mode

指令

user@linux:~$ cat /proc/cpuinfo

CPU是Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
顯示資訊如下:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 26
model name      : Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz
stepping        : 4
cpu MHz         : 1600.000
cache size      : 8192 KB
physical id     : 0
siblings        : 8
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips        : 5345.37
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:
...中略
processor       : 7
vendor_id       : GenuineIntel
cpu family      : 6
model           : 26
model name      : Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz
stepping        : 4
cpu MHz         : 1600.000
cache size      : 8192 KB
physical id     : 0
siblings        : 8
core id         : 3
cpu cores       : 4
apicid          : 7
initial apicid  : 7
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips        : 5345.16
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

方法一

user@linux:~$ mysqladmin -u root -h localhost password '輸入想要的密碼'

方法二

mysql> update mysql.user set Password=password('輸入想要的密碼') where User='root';