yesterday i have learned and hearing :(Because its very important for every human life).


niraiya avamangal var um life la .but Ethan yell-am oru burn panakudiya visayama eduthukama , una

Vega paduthakudiya oru visayama eduthudu nada podu . entha pala avamanagal matum tha una great

and successful ah erukira oru manithana matrum.  epo etha yella visathium learn panikara .pinala

etha  successful ah mathura.

oru visathai kathu tharavagale mathavagatha . first , give salute for them.


vehicle ah eyakura petrol ah erukanum .erutha nee unoda goal success

happy life:

Its learned for few things:

1. Ignore the negativity.

2. Be positive for all the time.

3. Many failures are guided for one huge success.

4.Thanks for teaching life in harmful  people

5. Be kind ful

6. BE helpful for others.

7. Be Brave heart .

8. Don't loss confidence for all time.

9. Don't forgot about your  parents.


Because life is  temporary. its not just nothing .whenever  the come money, leadership , power, etc.....

but mankind is very important. the one thing make for good human-being.

Age is not realize for real maturity. the great experience is realize for real maturity.

Scripting basics:

1.Shell Scripts are text file.It should be all commands are executed

Because the shell scripts is do for automatically process and daily repeated for command line:

1. performing system administration and trouble shooting .

2. creating the simple applications.

3.Manipulate the text or files.

4. Automating commonly used command lines.


The prompt can vary every time displayed and using the

Some common escape sequences:

1. \u  =  user name = (if you have multiple accounts).

2.\w  = Current working directory

3. \h  =  Host name( not fully qualified with domain name)

4.\$  =  if you are non- privileged user  . #   =    if you are privileged user. sometimes if you are

become an super user also

5.  \!  The history number of the current command also.

Man command is used and solving  the mowin problems:

such as a,

1. Man command :

Its shows the manual pages.

Searching the manual :

man -k command:

The above keyword listing the  all matches pages.

While viewing a man page

q quit :

Because its used for quit page

/text command:

Its used for searching the text.

n/N command:

Its goes for next/previous matches.

Linux file system and directories organization:

1. Files and directories are organized with single- root inverted tree structure.

2. names are case-sensitive.

3.File system is begins with the root and forward slash

4.paths are delimited by /

or

1. cal command:

cal  = displaying the calendar for every month and year

For example like as a ,

cal 2009

Its displaying the full 2009 year events.

cal  6 2008

cal -2  2008

The above two commands is displaying the few changes for calendar.

2. Date command:


Date format like as a , mm/dd/yy

So its mentioned the command is displaying like,

date  '+%x'    .

Otherwise  user want some help .so command is appeared to,

date ----help.

Command line expansion:

Tilde command: (~):

May for your user home directory:

$ ~ cat /.bash_profile

.bash_profile is own user's home directory.

may its refer for another user home directory.

$  ls ~nandhini/.public_html

.public_html  = Its refer for another user's  home directory.

When the tilde command is used, whether  the command is referring for your own's home directory.