enca [-L LANGUAGE] [OPTION]... [FILE]...
enconv [-L LANGUAGE] [OPTION]... [FILE]...

Bản 5.0
	+ cải thiện performance 5-10 lần
	+ batched read interface
	+ more metadata objects
	+ giảm lượng bộ nhớ
	+ enable query cache

$ enconv -x UTF-8 -L none < MySQL\ Cluster

Bản 5.0
	+ cải thiện performance 5-10 lần
	+ batched read interface
	+ more metadata objects
	+ giảm lượng bộ nhớ
	+ enable query cache

# du -hs /home
3.5G    /home
# du -hs /etc
92M     /etc
# du -hs /bin
5.2M    /bin

# nohup command &

[text@server ~]$ uptime 
 13:32:50 up  4:22,  3 users,  load average: 0.34, 0.32, 0.33

# ls | xargs gzip

# nice gzip OfficeXpSp3-kb832671-fullfile-enu.exe

top - 13:44:39 up  4:34,  4 users,  load average: 0.58, 0.62, 0.49
Tasks: 134 total,   2 running, 132 sleeping,   0 stopped,   0 zombie
Cpu(s): 18.5%us,  6.2%sy, 65.7%ni,  0.0%id,  9.0%wa,  0.0%hi,  0.6%si,  0.0%st
Mem:   1025596k total,  1011384k used,    14212k free,    33616k buffers
Swap:   811240k total,       84k used,   811156k free,   505860k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                    
21685 testuser  30  10  2048  572  244 R 64.6  0.1   0:07.12 gzip OfficeXpSp3-kb832671-fullfile-enu.exe                 
 2471 root      20   0  399m  34m  10m S 12.4  3.5  19:44.95 /usr/bin/Xorg :0 -br
12623 testuser  25   5  237m  85m  22m S  3.4  8.5  12:16.84 /usr/lib/firefox-3.0.1/firefox                             
21707 root      20   0  9344 2796 2240 S  1.7  0.3   0:00.03 sshd: unknown [priv]                                       
21709 root      20   0  8556 2256 1824 S  1.7  0.2   0:00.03 sshd: [accepted]

$ du -s * | sort -rn
10884	LPIC-1.Linux.Professional.Institute.Certification.Study.Guide._Level1.Exams.101.and.102_.pdf
5476	Linux Professional Institute (LPI) Certification Bible.pdf
3100	117-101
2472	117-201
2352	OReilly.LPI.Linux.Certification.in.a.Nutshell.2nd.Edition.Jul.2006.chm
1872	117-102
1052	117-202
564	Linux Professional Institute (LPI) Certification Level 1.pdf
548	Testking LPI
72	Appendix G.pdf 
8	Incorrect Answer.otl
4	questions.otl

$ du -s * | sort -rn | cut -f2 | xargs -d '\n' du -sh
11M	LPIC-1.Linux.Professional.Institute.Certification.Study.Guide._Level1.Exams.101.and.102_.pdf
5.4M	Linux Professional Institute (LPI) Certification Bible.pdf
3.1M	117-101
2.5M	117-201
2.3M	OReilly.LPI.Linux.Certification.in.a.Nutshell.2nd.Edition.Jul.2006.chm
1.9M	117-102
1.1M	117-202
564K	Linux Professional Institute (LPI) Certification Level 1.pdf
548K	Testking LPI
72K	Appendix G.pdf 
8.0K	Incorrect Answer.otl
4.0K	questions.otl

$ du -sh Open\ source\ Security\ Tools.pdf 
13M	Open source Security Tools.pdf

$ split -b 5m -d Open\ source\ Security\ Tools.pdf Open\ source\ Security\ Tools.

$ du -sh *
5.1M	Open source Security Tools.00
5.1M	Open source Security Tools.01
2.8M	Open source Security Tools.02
13M	Open source Security Tools.pdf

$ tar --help
GNU `tar' saves many files together into a single tape or disk archive, and
can restore individual files from the archive.

Usage: tar [OPTION]... [FILE]...

Examples:
  tar -cf archive.tar foo bar  # Create archive.tar from files foo and bar.
  tar -tvf archive.tar         # List all files in archive.tar verbosely.
  tar -xf archive.tar          # Extract all files from archive.tar.

$ tar -xvjf httpd-2.2.9.tar.bz2

$ tar -xvzf mysql-5.0.67.tar.gz

$ tar -cvfj /mnt/usb/doc.bz2 ~/documents

alias ..='cd ..'
alias ...='cd ../../'
alias cl='clear'
alias df='df -h'
alias l='cd /mnt/data/linux'
alias p='cd /mnt/data/linux/packages' 
alias c='cd /mnt/data/linux/code'
alias e='cd /mnt/data/linux/ebooks'
alias t='cd /mnt/data/linux/To\ do\ write'
alias v1='cd /mnt/data/Video'
alias tcs='cd /mnt/data/Music/01_TrinhCongSon/'
alias v2='cd /home/quanta/Video'
alias m='cd /mnt/data/Music'
alias v='vnstat $1'
alias h='history'
alias trim='grep -v "^#" $1 | sed "/^$/d"'
alias mk='mkdir'
alias j='job -l'
alias f='freemind'
alias ff='firefox &'
alias s='skype &'
alias t='cd /mnt/data/linux/To\ do\ write'
alias x='xvnkb --method=telex --charset=utf8'
alias v='VBoxManage'
alias a='aria2c $1'

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias h='history'
alias cdrom='mount /dev/sr0 /mnt/cdrom'
alias log='tail -f /var/log/messages'
alias trim='grep -v "^#" $1 | sed "/^$/d"'
alias s='service $1 $2'
alias openports='netstat -nape --inet'
alias psx='ps -auxw | grep $1'
alias b='echo $2 > /sys/devices/virtual/backlight/sony/brightness'
alias v='vnstat $1'
alias pt='powertop'
alias n='netstat $1'
alias r='route $1'
alias e='exit'
alias t='tail -f $1'

$ . ~/.bashrc

$ source ~/.bashrc

Nov 19 	Gettysburg Address delivered, 1863
Nov 19 	Anniversary of the 1968 Coup by the Army in Mali
Nov 19 	Discovery Day in Puerto Rico
Nov 19 	Feast Day of S.A.S. Prince Rainier in Monaco
Nov 19 	Garifuna Settlement in Belize
Nov 19*	Day of Prayer and Repentance (Buss- und Bettag) in Federal Republic of Germany
Nov 19 	N'oubliez pas les Tanguy !
Nov 19 	Bonne fête aux Tanneguy !
Nov 19 	Aujourd'hui, c'est la St(e) Mechtilde.
Nov 19 	N'oubliez pas les Mathilde !
Nov 19 	Bonne fête aux Patrocle !
Nov 19 	Sainte Élisabeth nous montre quel bonhomme sera l'hiver.
Nov 19 	День ракетных войск и артиллерии
Nov 20 	Robert Francis Kennedy (RFK) born in Boston, Massachusetts, 1925
Nov 20 	Revolution Day in Mexico
Nov 20 	Duane Allman is born in Nashville, Tennessee, 1946
Nov 20 	Joe Walsh is born in Cleveland, 1947
Nov 20 	Aujourd'hui, c'est la St(e) Edmond.
Nov 20 	N'oubliez pas les Octave !
Nov 20 	Bonne fête aux Adventor !
Nov 20 	Aujourd'hui, c'est la St(e) Solutor.
Nov 20 	N'oubliez pas les Ambroise !
Nov 20 	Bonne fête aux Rutus !
Nov 20 	Combate de la Vuelta de Obligado, 1845

Sep 02 	Great Britain adopts Gregorian Calendar, 1752
Sep 02 	Japan signs unconditional surrender on US battleship `Missouri', 1945
Sep 02 	N'oubliez pas les Ingrid !
Sep 02 	Nace en Buenos Aires el escritor Esteban Echeverría, 1805
Sep 02 	Muere Bernardino Rivadavia, primer presidente argentino, 1845
Sep 03 	Richard ``the Lionheart'' crowned king of England, 1189
Sep 03 	Anniversary of the Founding of the Republic in San Marino
Sep 03 	Independence Day in Qatar
Sep 03 	Memorial Day in Tunisia
Sep 03 	Bonne fête aux Grégoire !
Sep 03 	Kriegserklärung Großbritaniens und Frankreichs an Deutschland, 1939
Sep 03 	Vier-Mächte-Abkommen über Berlin, 1971

root@GantzPC:~# calendar -t 11.9     
Sep 11 	Terrorists destroy World Trade Center in New York, 2001
Sep 11 	Anniversary of military coup in Chile
Sep 11 	Ethiopian New Year in Ethiopia
Sep 11 	National Holiday in Chile
Sep 11 	Aujourd'hui, c'est la St(e) Adelphe.
Sep 11 	Tu peux semer sans crainte
	Quand arrive la saint Hyacinthe.
Sep 12 	Jesse Owens born, 1913
Sep 12 	German paratroopers rescue Mussolini from captivity, 1943
Sep 12 	Germany annexes Sudetenland, 1938
Sep 12 	Amilcar Cabral's Birthday in Guinea-Bissau
Sep 12 	Defender's Day in Maryland
Sep 12 	Revolution Day in Ethiopia
Sep 12 	N'oubliez pas les Apollinaire !

$ ethtool -i eth0
driver: b44
version: 2.0
firmware-version: 
bus-info: 0000:03:00.0

Name       : gconf-editor
Arch       : i386
Version    : 2.22.0
Release    : 1.fc9
Size       : 1.4 M
Repo       : installed
Summary    : Editor/admin tool for GConf
URL        : http://www.gnome.org
License    : GPLv2+ and GFDL
Description: gconf-editor allows you to browse and modify GConf configuration sources.

$ gconftool-2 --type string --set /apps/metacity/global_keybindings/run_command_2 "<Alt>L"
$ gconftool-2 --type string --set /apps/metacity/keybinding_commands/command_2 "gnome-screensaver-command --lock"

$ gconftool-2 -t string -s /apps/metacity/global_keybindings/run_command_3 "<Alt>X"
$ gconftool-2 -t string -s /apps/metacity/keybinding_commands/command_3 "xvnkb --method=telex --charset=utf8"

gconftool-2 -s -t bool /desktop/gnome/remote_access/enabled true

gconftool-2 -s -t bool /desktop/gnome/remote_access/prompt_enabled false

$ clear

# mpstat 
Linux 2.6.18-92.el5  (s1.xyz.com)                   12/05/2008

09:38:26 AM  CPU   %user   %nice    %sys %iowait    %irq   %soft  %steal   %idle    intr/s
09:38:26 AM  all   13.98    0.05   15.57    2.45    0.02    0.60    0.00   67.34   2426.45

# mpstat -P ALL

Linux 2.6.18-92.el5  (s1.xyz.com)                   12/05/2008

09:47:16 AM  CPU   %user   %nice    %sys %iowait    %irq   %soft  %steal   %idle    intr/s
09:47:16 AM  all   13.98    0.05   15.53    2.44    0.02    0.60    0.00   67.38   2429.00
09:47:16 AM    0   10.98    0.04   15.04    1.83    0.00    0.35    0.00   71.76   1000.99
09:47:16 AM    1   10.75    0.12   14.08    5.46    0.01    0.37    0.00   69.22     64.27
09:47:16 AM    2   12.08    0.04   15.15    1.84    0.00    0.47    0.00   70.41      0.00
09:47:16 AM    3   12.94    0.05   15.75    2.08    0.00    0.43    0.00   68.74     13.53
09:47:16 AM    4   11.87    0.05   16.69    2.50    0.01    0.32    0.00   68.57     30.14
09:47:16 AM    5   14.01    0.04   13.71    1.81    0.00    0.29    0.00   70.13      0.49
09:47:16 AM    6   13.62    0.03   18.13    1.76    0.00    0.41    0.00   66.05     24.52
09:47:16 AM    7   25.55    0.01   15.74    2.26    0.16    2.16    0.00   54.13   1295.06

$/sbin/ifconfig

$ifconfig

$echo $PATH
/usr/kerberos/bin:/usr/local/bin:/usr/bin

$PATH=$PATH:/sbin

$echo $PATH
/usr/kerberos/bin:/usr/local/bin:/usr/bin:/sbin

$ ls -d *.otl | sed 's/\(.*\).otl$/mv "&" "\1.txt"/' | sh

$ history | awk '{print $2}' | sort | uniq -c | sort -rn | head

Record Header: Handle {record id}, DMI type {dmi type id}, {record size} bytes
Record Value: {multi line record value}

# dmidecode -t bios
# dmidecode 2.9
SMBIOS 2.4 present.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: Phoenix Technologies LTD
	Version: R0070J4
	Release Date: 12/06/2006
	Address: 0xE7210
	Runtime Size: 101872 bytes
	ROM Size: 1024 kB
	Characteristics:
		PCI is supported
		PC Card (PCMCIA) is supported
		PNP is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		ESCD support is available
		Boot from CD is supported
		Selectable boot is supported
		EDD is supported
		8042 keyboard services are supported (int 9h)
		CGA/mono video services are supported (int 10h)
		ACPI is supported
		USB legacy is supported
		AGP is supported
		Smart battery is supported
		BIOS boot specification is supported
		Function key-initiated network boot is supported
		Targeted content distribution is supported
	BIOS Revision: 7.0
	Firmware Revision: 7.0

# dmidecode -t 1
# dmidecode 2.9
SMBIOS 2.4 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: Sony Corporation
	Product Name: VGN-N230E
	Version: C3LNME3Z
	Serial Number: 28249635-3008138
	UUID: 7C1A72A0-B4E7-11DB-893E-0013A94F8444
	Wake-up Type: Power Switch
	SKU Number: N/A
	Family: N/A

# dmidecode -t Processor
# dmidecode 2.9
SMBIOS 2.4 present.

Handle 0x0004, DMI type 4, 35 bytes
Processor Information
	Socket Designation: N/A
	Type: Central Processor
	Family: Other
	Manufacturer: GenuineIntel
	ID: E8 06 00 00 FF FB E9 BF
	Version: Genuine Intel(R) CPU           T2250  @ 1.73GHz
	Voltage: 1.3 V
	External Clock: 133 MHz
	Max Speed: 1733 MHz
	Current Speed: 1733 MHz
	Status: Populated, Enabled
	Upgrade: None
	L1 Cache Handle: 0x0005
	L2 Cache Handle: 0x0006
	L3 Cache Handle: 0x0007
	Serial Number: N/A
	Asset Tag: N/A
	Part Number: N/A

# dmidecode -t memory
# dmidecode 2.9
SMBIOS 2.4 present.

Handle 0x0009, DMI type 16, 15 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 2048 GB
	Error Information Handle: Not Provided
	Number Of Devices: 2

Handle 0x000A, DMI type 17, 21 bytes
Memory Device
	Array Handle: 0x0009
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 1024 MB
	Form Factor: SODIMM
	Set: None
	Locator: SODIMM1
	Bank Locator: Bank 0
	Type: DDR2
	Type Detail: Unknown

Handle 0x000B, DMI type 17, 21 bytes
Memory Device
	Array Handle: 0x0009
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 1024 MB
	Form Factor: SODIMM
	Set: None
	Locator: SODIMM2
	Bank Locator: Bank 1
	Type: DDR2
	Type Detail: Unknown

Type   Information
       ----------------------------------------
          0   BIOS
          1   System
          2   Base Board
          3   Chassis
          4   Processor
          5   Memory Controller
          6   Memory Module
          7   Cache
          8   Port Connector
          9   System Slots
         10   On Board Devices
         11   OEM Strings
         12   System Configuration Options
         13   BIOS Language
         14   Group Associations
         15   System Event Log
         16   Physical Memory Array
         17   Memory Device
         18   32-bit Memory Error
         19   Memory Array Mapped Address
         20   Memory Device Mapped Address
         21   Built-in Pointing Device
         22   Portable Battery
         23   System Reset
         24   Hardware Security
         25   System Power Controls
         26   Voltage Probe
         27   Cooling Device
         28   Temperature Probe
         29   Electrical Current Probe
         30   Out-of-band Remote Access
         31   Boot Integrity Services
         32   System Boot
         33   64-bit Memory Error
         34   Management Device
         35   Management Device Component
         36   Management Device Threshold Data
         37   Memory Channel
         38   IPMI Device
         39   Power Supply

# export HISTTIMEFORMAT=’%F %T ‘
# history | more

$ yum info ImageMagick
Installed Packages
Name       : ImageMagick
Arch       : i386
Version    : 6.4.0.10
Release    : 2.fc10
Size       : 27 M
Repo       : installed
Summary    : An X application for displaying and manipulating images
URL        : http://www.imagemagick.org/
License    : ImageMagick
Description: ImageMagick(TM) is an image display and manipulation tool for the X Window System. ImageMagick can read and write
           : JPEG, TIFF, PNM, GIF, and Photo CD image formats. It can resize, rotate, sharpen, color reduce, or add special
           : effects to an image, and when finished you can either save the completed work in the original format or a
           : different one. ImageMagick also includes command line programs for creating animated or transparent .gifs,
           : creating composite images, creating thumbnail images, and more.  ImageMagick is one of your choices if you need a
           : program to manipulate and display images. If you want to develop your own applications which use ImageMagick code
           : or APIs, you need to install ImageMagick-devel as well.

$ for img in *; do mogrify -verbose -font /usr/share/fonts/msttcorefonts/verdana.ttf -pointsize 50 -draw "gravity SouthEast fill gray text 0,0 'Photographed by: quanta'" $img; done

$ for img in *; do mogrify -verbose -font /usr/share/fonts/msttcorefonts/verdana.ttf -pointsize 50 -draw "fill gray text $((`identify -format '%w' $img` - `echo "Photographed by: quanta" | wc -c` * 27 - 34)),$((`identify -format '%h' $img` - 34)) 'Photographed by: quanta'" $img; done

Name       : steghide
Arch       : i386
Version    : 0.5.1
Release    : 9.fc9
Size       : 488 k
Repo       : installed
Summary    : A steganography program
URL        : http://steghide.sourceforge.net
License    : GPLv2
Description: Steghide is a steganography program that is able to hide data in various kinds of image- and audio-files. The
           : color- respectivly sample-frequencies are not changed thus making the embedding resistant against first-order
           : statistical tests. Features of steghide include compression and encryption of embedded data,  embedding of a
           : checksum to verify the integrity of the extracted data and support for jpeg, bmp, wav and au files.