Linux Tips and Tricks

## To view detailed hardware info in linux
root# dmidecode                               # To get hardware info of system in Linux

root# dmidecode -t 2                        # To get CPU info

root# dmidecode -t 17                      # To get ram modules info

## To view network info and traffic capturing  
root# ifconfig -a                               # To get Ethernet card info

root# tcpdump -i eth0                      # To capture Ethernet traffic

REPAIR MBR OF WIN 7

Boot from windows 7 dvd

Choose your default "Language," "Time" and "Keyboard Input" on the first window and click "Next."

Click on the "Repair Your Computer" option to gain access to the System Recovery window.
 
Now choose "Command Prompt" to run the Bootsect.exe utility. Bootsect is located inside the boot folder so change your directory to boot. Now run "bootsect /nt60 C:\" (without quotes)
 
if you had Windows 7 initially installed in the C partition. Alternatively, you can run "bootsect /nt60 SYS" or "bootsect /nt60 ALL" (without quotes) to repair the system partition or all partitions.
 
Eject the DVD and restart your computer. Your computer should now boot Windows 7 again.

bootsect /nt52 | /nt60  SYS|ALL|C:\  /force| /mbr

SAMBA SHARE MULTIUSER MULTIGROUP WITH QUOTA

UBUNTU SAMBA  MULTIUSER MULTIGROUP SHARE FOLDER WITH QUOTA
## Skip this step if you already upgraded apt-get update && apt-get upgrade && echo $?

apt-get install samba && echo $?

groupadd share

mkdir /share

chmod 3770 /share

chown root:share /share/
or
chgrp share /share

### Add IT group and directory
groupadd IT && mkdir /share/IT && chmod 3770 /share/IT && chgrp IT /share/IT/ && echo $?

useradd -d /share/IT/ -s /sbin/nologin -g share -G IT -M user1

smbpasswd -a user1

### nano /etc/samba/smb.conf
# add below lines at the end of file

[share]

path = /share/

comment = samba share for company files

valid users = user1 user2 user3 user4

public = no

writable = yes

printable = no

create mask = 770

directory mask = 3750

force directory mode = 3750

inherit permissions = yes

## Restart the samba 

service smb restart

Quota Configuration

## install quota

apt-get install quota

nano /etc/fstab

#add below line at the end

/dev/sda1      /               ext4    errors=remount-ro,usrquota,grpquota 0       1

## Remount the file system

mount -o remount /

## it will set 5GB soft limit and 6GB hard limit

quotatool -u user1 -bq 5000Mb -l "6000 Mb" / -v

Cheapest Android Phone

Another Block Buster Android Dual Sim 2G/3G Phone by Pakistani Company Qmobile

Battery	1800mAh, Talk time Up to 5 h, Stand-by Up to 180 h
OS	Android OS, v4.0.4 (Ice Cream Sandwich)
Memory	4GB built-in, 512MB RAM, microSD card 4GB included (supports up to 32GB)
Processor	Dual-core 1 GHz MediaTek MT6577 + PowerVR SGX531 GPU
Connectivity	Bluetooth v3.0 with A2DP, USB, WLAN (Wi-Fi 802.11 b/g/n, Wi-Fi hotspot), GPRS Class 12 (48 kbps), EDGE Class 12, 3G
Display Size	480 x 854 pixels, 5.0 inches (~196 ppi pixel density), Sensors: Accelerometer, proximity
Display Colour	IPS LCD capacitive touchscreen, 16M colors, Touch-sensitive controls, Multitouch
Operating  Frequency / Band	SIM 1: 850 / 900 / 1800 / 1900 (HSDPA 850 / 900 / 1900 / 2100) SIM 2 : 850 / 900 / 1800 / 1900 (HSDPA 850 / 900 / 1900 / 2100)
Browser	HTML5
Colors	Black, White
Entertainment	FM radio, 3.5mm audio jack, MP4/WMV/H.264/H.263 player, MP3/AAC/WMA/WAV player, SNS integration, Google Talk, Games (built-in + downloadable)
Camera	8MP, 3264x2448 pixels, autofocus, Dual-LED flash, Geo-tagging, touch focus, face detection, Video, 1.3MP Secondar Camera
Other Features	Dual SIM, GPS + A-GPS support, MicroSIM card support only, Google Search, Maps, Gmail, Youtube, Calendar, Speakerphone