Grep - PowerCram Blog

How To Use grep Command In Linux

The grep command searches the given file for lines containing a match to the given strings or words. By default, grep prints the matching lines. grep can be used to search for lines of text that match one or many regular expressions, and outputs only the matching lines. grep Syntax grep ‘word’ filenamegrep ‘string1 string2’ filenamecat otherfile | […]

Building the Perfect Backtrack 4 USB Thumb Drive

This post will show you how to build a USB thumb drive with the following features: Persistent Changes Nessus and NessusClient installed Encryption configured for storing data Tools and Supplies USB thumbdrive – minimum capacity 4GB BackTrack 3 CDROM, BackTrack 4 DVD or an additional USB thumbdrive (minimum 2GB) – Used to partition the thumbdrive. Optional: UNetbootin – A […]

FREE Windows Utilities for Sniffing

WinDump WinDump is an exceptionally powerful command-line packet sniffer. Ported over from the source of the Tcpdump utility available for UNIX, WinDump carries over the same power and flexibility to the Windows world, all in a lightweight executable. WinDump is a helpful utility when you need to do some quick and easy packet capturing to diagnose a network […]

32 FREE Windows Administration Utilities

BareTail. A free real-time log file monitoring tool. CamStudio. Free screen recording software. CDBurnerXP. Burns CD-ROMs, DVDs, audio CDs, and ISO images. Comodo Firewall Pro. Is a firewall and antivirus application. DriveImage XML. Is a program for imaging and backing up partitions and logical drives. FileZilla. GUI FTP client. GParted LiveCD. Manages partitions on systems. InfraRecorder. Burns ISO […]

Understanding Linux /etc/passwd File Format

/etc/passwd file stores essential information, which is required during login i.e. user account information./etc/passwd is a text file, that contains a list of the system’s accounts, giving for each account some useful information like user ID, group ID, home directory, shell, etc. It should have general read permission as many utilities, like ls use it to map user […]