Unix is a portable, multitasking, multiuser, time-sharing operating system (OS) originally developed in 1969 by a group of employees at AT&T.Unix operating systems are widely used in PCs, servers and mobile devices. The Unix environment was also an essential element in the development of the Internet and networking.
Basics of computer applications
Unix Course Introductions
Pre-requisites
Course Summary
Processes and Directories
Displaying Processes – ps
Displaying Directories – ls
Getting Help – man
Simple Commands used for processing
Using Wildcards
Creating files – using > symbol
Redirection – using >> symbol
Redirecting Input – using < symbol
Displaying Files – cat, more
Piping – using | symbol
Word Count
Sorting a file
Removing duplicates
Transliteration
Using Head and Tail command in files
Creating directory
Moving files to directories
Copying files to directories
Changing directory
Removing files and directories
Special Files – . and ..
Creating Aliases
Using Aliases
Displaying selected characters – using cut
Displaying selected fields – using delimiters
Displaying selected files – using paste
Using paste with delimiters
Displaying content of the file using GREP
Displaying content of the file using EGREP
EGREP Meta-character
Back Referencing concepts
Zipping a file
Unzipping a file
Combining a set of files using TAR
Extracting TAR file
Using TAR with ZIP
Searching for a file – using find
Finding List of files and directories
Finding Last modified files
Find with -exec
Find with -xargs
Using /dev/null
Foreground Jobs
Background Jobs – &
Stopping Jobs – kill
Changing Permissions – chmod