Tag Archives: unix

vi editor Quick Reference

vi  pronounced as ” vee eye ” is a unix editor available on almost all the unix  operating systems , solaris , bsd ,aix , hpux etc.
This document is a quick reference to vi editor and will be of help if your are new to unix , learning unix  or just refreshing your vi knowledge after a few years.

Checking and Repairing Unix File system with fsck

fsck is a Unix utility for checking and repairing file system inconsistencies . File system can become inconsistent due to several reasons and the most common is abnormal shutdown due to hardware failure , power failure or switching off the system without proper shutdown. Due to these reasons the superblock in a file system is not updated and has mismatched information relating to system data blocks, free blocks and inodes .