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UNIX 1 - Coggle Diagram
UNIX 1
Basic commands
$echo for displating messages
Takes messages as arguments
$tput used to control cursor movement
Arguments clear for clearing the screen
Arguments cup 10 10 for movement
Arguments lines for finding position
Arguments cols for finding position
$tty for finding names of device files
$who for current users login details
Arguments -H for headers for columns
Arguments -u for more details
$who am i for self login details
$uname for getting what unix system we are using
Arguments r for release details
Arguments m for machine details
$date for date
Arguments +%m for month
Arguments +%h for name of the month
$cal for printing calender
Arguments month or year
$calender for text format information and reminders
$passwd for changing password
$lock for locking a session
Arguments - minutes for lock session
$banner for displaying a banner name
Arguments name
$cat for creating a small file
Arguments > name of the file and Ctrl D is used for termination
$bc for calculations
Arguments
sqrt(n)
e(n)
^
c(n)
s(n)
t(n)
l(n)
$spell $ispell for spell checks
mkdir for making directory
mv for moving
pwd for present working directory
ls for list of files
rmdir for removing directory
tail for printing last few lines in a file
cd for change directory
file for determining file type
cp for copying source file into destination
find for finding files
Unix components
Kernel
https://en.wikipedia.org/wiki/Kernel_(operating_system
)
The Shell
https://en.wikipedia.org/wiki/Unix_shell
Bash
C Shell
Bourne shell
Freindly interactive shell
The korn shell
File system
Organized as a tree hierarichal structure
Breif history
Ken Thompson and Dennis ritchie 1st version
Article [
https://en.wikipedia.org/wiki/History_of_Unix
]
What is UNIX
Article
https://www.le.ac.uk/oerresources/bdra/unix/page_05.htm
Command substitution
Command within command
Giving multiple commands
Multiple commands at a time using ;
$date ;who
Introduction to UNIX
Using UNIX