Showing posts with label format date. Show all posts
Showing posts with label format date. Show all posts

Sunday, August 25, 2013

HowTo Format Date For Display or Use In a Shell Script

How do I format date to display on screen on for my shell scripts as per my requirements on Linux or Unix like operating systemsYou need to use the standard date command to format date or time. You can use the same command with the shell script.
 The syntax is
  1. date +FORMAT 
  2. date +"%FORMAT"
  3. date +"%FORMAT%FORMAT" 
  4. date +"%FORMAT-%FORMAT"

Task: Display date in mm-dd-yy format

Open a terminal and type the following date command:
$ date +"%m-%d-%y"Sample output:
02-27-07
To turn on 4 digit year display:
$ date +"%m-%d-%Y"Just display date as mm/dd/yy format:
$ date +"%D"

Task: Display time only

Type the following command:
$ date +"%T"Outputs:
19:55:04
To display locale's 12-hour clock time, enter:
$ date +"%r"Outputs:
07:56:05 PM
To display time in HH:MM format, type:
$ date +"%H-%M"Sample outputs:
00-50

How do I save time/date format to the shell variable?

$ NOW=$(date +"%m-%d-%Y"To display a variable use echo / printf command:
$ echo $NOW

A sample shell script

#!/bin/bash
NOW=$(date +"%m-%d-%Y")
FILE="backup.$NOW.tar.gz"
echo "Backing up data to /nas42/backup.$NOW.tar.gz file, please wait..."
# rest of script
# tar xcvf /nas42/backup.$NOW.tar.gz /home/ /etc/ /var
 

A complete list of FORMAT control characters supported by the date command

FORMAT controls the output. It can be the combination of any one of the following:
%FORMAT StringDescription
%%a literal %
%alocale's abbreviated weekday name (e.g., Sun)
%Alocale's full weekday name (e.g., Sunday)
%blocale's abbreviated month name (e.g., Jan)
%Blocale's full month name (e.g., January)
%clocale's date and time (e.g., Thu Mar 3 23:05:25 2005)
%Ccentury; like %Y, except omit last two digits (e.g., 21)
%dday of month (e.g, 01)
%Ddate; same as %m/%d/%y
%eday of month, space padded; same as %_d
%Ffull date; same as %Y-%m-%d
%glast two digits of year of ISO week number (see %G)
%Gyear of ISO week number (see %V); normally useful only with %V
%hsame as %b
%Hhour (00..23)
%Ihour (01..12)
%jday of year (001..366)
%khour ( 0..23)
%lhour ( 1..12)
%mmonth (01..12)
%Mminute (00..59)
%na newline
%Nnanoseconds (000000000..999999999)
%plocale's equivalent of either AM or PM; blank if not known
%Plike %p, but lower case
%rlocale's 12-hour clock time (e.g., 11:11:04 PM)
%R24-hour hour and minute; same as %H:%M
%sseconds since 1970-01-01 00:00:00 UTC
%Ssecond (00..60)
%ta tab
%Ttime; same as %H:%M:%S
%uday of week (1..7); 1 is Monday
%Uweek number of year, with Sunday as first day of week (00..53)
%VISO week number, with Monday as first day of week (01..53)
%wday of week (0..6); 0 is Sunday
%Wweek number of year, with Monday as first day of week (00..53)
%xlocale's date representation (e.g., 12/31/99)
%Xlocale's time representation (e.g., 23:13:48)
%ylast two digits of year (00..99)
%Yyear
%z+hhmm numeric timezone (e.g., -0400)
%:z+hh:mm numeric timezone (e.g., -04:00)
%::z+hh:mm:ss numeric time zone (e.g., -04:00:00)
%:::znumeric time zone with : to necessary precision (e.g., -04, +05:30)
%Zalphabetic time zone abbreviation (e.g., EDT)
SEE ALSO:

Monday, April 15, 2013

jquery format date

Getting Started

<script type="text/javascript" src="date.js"></script>

Syntax Overview

Date.today()                    // Returns today's date, with time set to 00:00 (start of day).
Date.today().next().friday()    // Returns the date of the next Friday.
Date.today().last().monday()    // Returns the date of the previous Monday.
new Date().next().march()       // Returns the date of the next March.
new Date().last().week()        // Returns the date one week ago. 
Date.today().is().friday()      // Returns true|false if the day-of-week matches.
Date.today().is().fri()         // Abbreviated day names. 
Date.today().is().november()    // Month names.
Date.today().is().nov()         // Abbreviated month names.
Date.today().is().weekday()     // Is today a weekday?
Date.today().addDays(1)         // Add one day (+1).
Date.today().addMonths(-3)      // Subtract three months (-3).
Date.today().add(1).day()       // Add one (+1) day. Supports all date parts (year, month, day, hour, minute, second, millisecond, and weeks)
Date.today().add(-3).months()   // Subtract three (-3) months.
(1).day().fromNow()             // One (1) day from now. 
(3).months().ago()              // Three (3) months ago.
var n = 6;
n.months().fromNow()            // Six (6) months from now.
Date.monday()                   // Returns Monday of the current week.
Date.mon()                      // Abbreviated version of Date.monday()
Date.march()                    // Returns March 1st of this year.
Date.mar()                      // Abbreviated version of Date.march()
Date.today().first().thursday() // Returns the first Thursday of the current month.
Date.today().second().thursday()// Returns the second Thursday of the current month.
Date.march().third().thursday() // Returns the third Thursday in March of the current year.
Date.october().fourth().sunday()// Returns the fourth Sunday in October.
Date.today().fifth().sunday()   // Returns the fifth Sunday in the current month, or throws a RangeError exception if there are not 5 Sundays in the current month.
Date.october().final().sunday() // Returns the final Sunday in October.
Date.january().first().monday() // Returns the first Monday of the current year.
Date.december().final().friday()// Returns the last Friday of the current year.
Date.today().at("6:15pm");      // Returns todays date at 6:15pm.
var time = {hour:18, minute:15};
Date.today().at(time);          // Set time with a config object.
var birthDayParty = {month: 1, day: 20, hour: 20, minute: 30};
Date.today().set(birthDayParty);// Set date and time with a config object.

Parsing

Date.parse('t')                 // Returns today's date.
Date.parse('today')             // Returns today's date.
Date.parse('tomorrow')          // Returns tomorrow's date.
Date.parse('yesterday')         // Returns yesterday's date.
Date.parse('next friday')       // Returns the date of the next Friday.
Date.parse('last monday')       // Returns the date of the previous Monday.
Date.parse('July 8th, 2004')    // Thu Jul 08 2004
Date.parse('15-Jan-2004')       // Thu Jan 15 2004
Date.parse('7/1/2004')          // Thu Jul 01 2004
Date.parse('7.1.2004')          // Thu Jul 01 2004
Date.parse('07.15.04')          // Thu Jul 15 2004
Date.parse('July 23rd 2004')    // Fri Jul 23 2004
Date.parse('Sat July 3, 2004')  // Sat Jul 03 2004
Date.parse('10:30 PM EST')      // Wed Oct 31 2007 20:30:00
Date.parse('10PM')              // Wed Oct 31 2007 22:00:00
Date.parse('t + 5d')            // Adds 5 days to today.
Date.parse('today - 1 month')   // Subtracts 1 month from today.
Date.parse('+')                 // Add 1 day to today = tomorrow.
Date.parse('- 3months')         // Subtract 3 months.
Date.parse('+1year')            // Add a year to today.
Date.parse('-12 months')        // Subtract 12 months (1 year) from today.
Date.parse('July 4th')          // July 4th of this year.
Date.parse('15')                // 15th day of current month/year.
Date.parse('July 8th, 2004, 10:30 PM')      // Thu Jul 08 2004 22:30:00
Date.parse('2004-07-15T06:45:00')           // Thu Jul 15 2004 06:45:00
Date.parse('Thu, 1 July 2004 22:30:00 GMT') // Thu Jul 01 2004 16:30:00
Date.parse('1997-07-16T19:20:15')           // ISO 8601 Formats
Date.parse('1997-07-16T19:20:30+01:00')     // ISO 8601 with Timezone offset
Date.parse('1985-04-12T23:20:50Z')          // RFC 3339 Formats

Chaining

Date.today().add({ months: 1, days: 5 }).is().fri()        // Add 1 month and 5 days, then check if that date is a Friday.
Date.parse('10-July-2004').next().friday().add(-1).month() // Take in a date, then move to the next Friday and subtract a month.

Comparison

Date.today().equals( Date.parse('today'))                  // true|false
Date.parse('last Tues').equals(Date.today())               // true|false
Date.equals(Date.today(), Date.parse('today'))             // true|false
Date.compare(Date.today(), Date.parse('today'))            // 1 = greater, -1 = less than, 
Date.today().compareTo(Date.parse('yesterday'))            // 1 = greater, -1 = less than, 0 = equal
Date.today().between(startDate, endDate)                   // true|false

Converting to String

Format Description Example
s The seconds of the minute between 0-59. "0" to "59"
ss The seconds of the minute with leading zero if required. "00" to "59"
m The minute of the hour between 0-59. "0" or "59"
mm The minute of the hour with leading zero if required. "00" or "59"
h The hour of the day between 1-12. "1" to "12"
hh The hour of the day with leading zero if required. "01" to "12"
H The hour of the day between 0-23. "0" to "23"
HH The hour of the day with leading zero if required. "00" to "23"
d The day of the month between 1 and 31. "1" to "31"
dd The day of the month with leading zero if required. "01" to "31"
ddd Abbreviated day name. Date.CultureInfo.abbreviatedDayNames. "Mon" to "Sun"
dddd The full day name. Date.CultureInfo.dayNames. "Monday" to "Sunday"
M The month of the year between 1-12. "1" to "12"
MM The month of the year with leading zero if required. "01" to "12"
MMM Abbreviated month name. Date.CultureInfo.abbreviatedMonthNames. "Jan" to "Dec"
MMMM The full month name. Date.CultureInfo.monthNames. "January" to "December"
yy Displays the year as a two-digit number. "99" or "07"
yyyy Displays the full four digit year. "1999" or "2007"
t Displays the first character of the A.M./P.M. designator. Date.CultureInfo.amDesignator or Date.CultureInfo.pmDesignator "A" or "P"
tt Displays the A.M./P.M. designator. Date.CultureInfo.amDesignator or Date.CultureInfo.pmDesignator "AM" or "PM"
S The ordinal suffix ("st, "nd", "rd" or "th") of the current day. "st, "nd", "rd" or "th"
Custom Date and Time Format Specifiers
Format Description Example
d The CultureInfo shortDate Format Pattern "M/d/yyyy"
D The CultureInfo longDate Format Pattern "dddd, MMMM dd, yyyy"
F The CultureInfo fullDateTime Format Pattern "dddd, MMMM dd, yyyy h:mm:ss tt"
m The CultureInfo monthDay Format Pattern "MMMM dd"
r The CultureInfo rfc1123 Format Pattern "ddd, dd MMM yyyy HH:mm:ss GMT"
s The CultureInfo sortableDateTime Format Pattern "yyyy-MM-ddTHH:mm:ss"
t The CultureInfo shortTime Format Pattern "h:mm tt"
T The CultureInfo longTime Format Pattern "h:mm:ss tt"
u The CultureInfo universalSortableDateTime Format Pattern "yyyy-MM-dd HH:mm:ssZ"
y The CultureInfo yearMonth Format Pattern "MMMM, yyyy"
new Date().toString()                  // "Wed Oct 31 2007 16:18:10 GMT-0700 (Pacfic Daylight Time)"
new Date().toString('M/d/yyyy')        // "10/31/2007"
Date.today().toString('d-MMM-yyyy')    // "31-Oct-2007"
new Date().toString('HH:mm')           // "16:18"
Date.today().toString('MMMM dS, yyyy') // "April 12th, 2008"
Date.today().toShortDateString()       // "10/31/2007". Culture specific as per Date.CultureInfo.shortDatePattern.
Date.today().toLongDateString()        // "Wednesday, October 31, 2007". Culture specific as per Date.CultureInfo.longDatePattern.
new Date().toShortTimeString()         // "4:18 PM". Culture specific as per Date.CultureInfo.shortTimePattern.
new Date().toLongTimeString()          // "4:18:34 PM". Culture specific as per Date.CultureInfo.longTimePattern.

Core

Date.today().set({ day: 15 })          // Sets the day to the 15th of the current month and year. Other object values include year|month|day|hour|minute|second.

        Date.today().set({ year: 2007, month: 1, day: 20 })

Date.today().add({ days: 2 })          // Adds 2 days to the Date. Other object values include year|month|day|hour|minute|second.

        Date.today().add({ years: -1, months: 6, hours: 3 })

Date.today().addYears(1)               // Add 1 year.
Date.today().addMonths(-2)             // Subtract 2 months.
Date.today().addWeeks(1)               // Add 1 week
Date.today().addHours(6)               // Add 6 hours.
Date.today().addMinutes(-30)           // Subtract 30 minutes
Date.today().addSeconds(15)            // Add 15 seconds.
Date.today().addMilliseconds(200)      // Add 200 milliseconds.
Date.today().moveToFirstDayOfMonth()   // Returns the first day of the current month.
Date.today().moveToLastDayOfMonth()    // Returns the last day of the current month.
new Date().clearTime()                 // Sets the time to 00:00 (start of the day).
Date.today().setTimeToNow()            // Resets the time to the current time (now). The functional opposite of .clearTime()

ISO 8601

// Parse ISO 8601 string
Date.parse('\"1997-07-16T19:20:15\"')  // ISO 8601 string format with wrapping double-quotes
// Convert date to ISO 6801 string
new Date().toISOString()               // Returns ISO 8601 string of date converted to it's UTC value. "2007-10-31T16:18:00Z"
// Get UTC converted ISO week number
Date.today().getISOWeek()              // Returns ISO 8601 week of year. Returns "01" to ("52" | "53") depending on the year. See also .getWeek()

Misc

Date.getMonthNumberFromName('March')   // 2 - CultureInfo specific. <static>
Date.getDayNumberFromName('sat')       // 6 - CultureInfo specific. <static>
Date.isLeapYear(2008)                  // true|false. <static>
Date.getDaysInMonth(2007, 9)           // 31 <static>
Date.today().getWeek()                 // Returns week of year. Returns 1 to (52 | 53) depending on the year
Date.today().setWeek(1)                // Sets the week of the year to the Monday of the week set.
var test = new Date();                 // Do something... like run a test...
test.getElapsed()                      // Returns millisecond difference from now.
Date.today().isDaylightSavingTime()    // true|false. Is within the Daylight Saving Time.
Date.today().hasDaylightSavingTime()   // true|false. Is Daylight Saving Time observed.