Using Grep
GREP grep essentially prints lines matching a pattern. grep –options pattern file The grep command has a lot of useful option, including:
Working with linux permissions
Working with Permissions Permissions determine how users can access resources on a system. System security is configured by the user’s UID (User ID), his GIDs (Group ID), (both primary and secondary), and the permissions on the object she is attempting to access. Permission Trio Bits The figure below shows the 10 positions (1 type bit… Read More »
Run Levels and Startup Scripts
In Linux there are 6 run levels, basically being the following: Init Level Description 0 This level is reserved for the shutdown phase. 1 Single-user mode (equivalent to Windows “safe mode”) 2 Multi-user setup without NFS (Network Filing System) 3 Full multi-user with networking, starting all required services 4 Typically unused but could be set… Read More »
A Few Linux Commands
a alias Create’s alias’s apt-get Package Manager for distro’s such as Ubuntu or debian based aspell Spell Checking tool arp Address Resolution Protocol, used to translate ip’s to hardware interface addresses awk Find and Replace text, database sort/validate/index b bash Bourne-Again SHell bc Arbitrary precision calculator language bg Launch in background break Quit a loop… Read More »
Welcome
Welcome. Soon the content will start rolling in, for the time being you can find some online tools in the Tools Section, tools such as an Online Nslookup, Facility to ping servers / computers, Port Scanner , Traceroute facility, a GeoIP tracking facility, telling you which country an ip address is located in. Soon i… Read More »