Tuesday, March 31, 2009

Command: date

Hi folks,

yourprompt$ date
will display your current date.

But how we can format the output?
Like I need the output as 21st Jan, 2009.
So there is a technique for that.
yourprompt$ date '+FORMAT'

Note: You can replace the FORMAT with the following characters.

%%
a literal %
%a
locale's abbreviated weekday name (Sun..Sat)
%A
locale's full weekday name, variable length (Sunday..Saturday)
%b
locale's abbreviated month name (Jan..Dec)
%B
locale's full month name, variable length (January..December)
%c
locale's date and time (Sat Nov 04 12:02:33 EST 1989)
%C
century (year divided by 100 and truncated to an integer) [00-99]
%d
day of month (01..31)
%D
date (mm/dd/yy)
%e
day of month, blank padded ( 1..31)
%F
same as %Y-%m-%d
%g
the 2-digit year corresponding to the %V week number
%G
the 4-digit year corresponding to the %V week number
%h
same as %b
%H
hour (00..23)
%I
hour (01..12)
%j
day of year (001..366)
%k
hour ( 0..23)
%l
hour ( 1..12)
%m
month (01..12)
%M
minute (00..59)
%n
a newline
%N
nanoseconds (000000000..999999999)
%p
locale's upper case AM or PM indicator (blank in many locales)
%P
locale's lower case am or pm indicator (blank in many locales)
%r
time, 12-hour (hh:mm:ss [AP]M)
%R
time, 24-hour (hh:mm)
%s
seconds since `00:00:00 1970-01-01 UTC' (a GNU extension)
%S
second (00..60); the 60 is necessary to accommodate a leap second
%t
a horizontal tab
%T
time, 24-hour (hh:mm:ss)
%u
day of week (1..7); 1 represents Monday
%U
week number of year with Sunday as first day of week (00..53)
%V
week number of year with Monday as first day of week (01..53)
%w
day of week (0..6); 0 represents Sunday
%W
week number of year with Monday as first day of week (00..53)
%x
locale's date representation (mm/dd/yy)
%X
locale's time representation (%H:%M:%S)
%y
last two digits of year (00..99)
%Y
year (1970...)
%z
RFC-822 style numeric timezone (-0500) (a nonstandard extension)
%Z
time zone (e.g., EDT), or nothing if no time zone is determinable


For example:

yourprompt$ date '+%d/%m/%y'
will display 21/01/2009

Leave queries if you have any.

Friday, March 6, 2009

Why Linux?

Hi Guys,

I was reading a very useful book, that is Linux Starter Pack.
Their introduction is:

"New to the wonderful world of Linux? Looking for an easy way to get started? Download our complete 130-page guide and get to grips with the OS in hours rather than weeks or months. We show you how to install Linux onto your PC, navigate around the desktop, master the most popular Linux programs and fix any problems that may arise."

Great! Quite interesting,right? So as the book is. Those who are planning for a migration and those who migrated and are still newbies can find it very useful.
The following are few things which clarifies a person who wants a migration but not able to do it by hearing few rumors.
  1. Linux is free!
  2. Linux looks and works a lot like Windows.
  3. Linux has lots of software ready for you to try.
  4. Linux is secure by default
  5. Linux is smart by default
  6. Linux looks great

Download the pdf version here.


Also if you are choosing Ubuntu, from a myriad of Linux Distros, as I am using that :), you may find this pocket reference as very useful again. It contains all the howto(s) with Ubuntu.
Downloading it here. Ubuntu Pocket Reference.