In HP-UX the date command does not have the "-d" switch like some other *nixes do. I'm working a simple script to tell me, given the day, month and year what day of the week that falls on.
Assuming valid day, month and year input (I'd perform quality checks on the input separately, but not shown here), would the following work for all dates? Or are there some corner cases that may not work correctly? I'm not worried about corner cases like way back in the 1500's when the Gregorian calendar 1st came online and how that might be screwed up.
The output is the output from a call to the 'cal' utility, plus the full name of the day of the week so that the named day of the week can be easily verified.
Code:
#!/bin/sh
day=$1
mth=$2
yr=$3
cal $mth $yr
set -A _WKDY Saturday Sunday Monday Tuesday Wednesday Thursday Friday
print ${_WKDY[$(cal $mth $yr | awk -vDD=$day 'FNR==3 {print ((7-$NF)+DD)%7}')]}
in awk,
Code:
FNR==3
means I skip the headers and am only concerned with the first week of the 'cal' output.
Breaking the math down:
Code:
(7-$NF)
Is an offset to "normalize" partial weeks since the first week of a month may have less than 7 days in it.
Code:
((7-$NF)+DD)
The offset is added to the numerical day of the month (DD)
Code:
((7-$NF)+DD)%7
The offset plus DD is then modded by 7 giving the numerical day of the week, of which, 0 is defined as Saturday, and 1-6 is defined as Sunday through Friday by how I set up the array.
I'm basically just wondering if anyone can break this given a modern date and valid inputs. (no using February 30th! :-) ) I can't break it, but I've a nagging suspicion I'm missing something.
Hi ,
I am working at Unix system,using c lang.
I need c fun which return the day of the week .
For example :
0- Sunday.
1- Monday.
....
10x. (4 Replies)
I need o get yesterday's day of week but im not exactly sure. the actual name is what i want. I can do it with numbers but im not sure with words. (3 Replies)
How to find the Day of the Week of the given Date using perl?
If I have a date in YYY--MM-DD format, how to find the DOW? Based on that, I need to find the following sunday.
Pls help. (5 Replies)
Hi All,
I have date in string format 'YYYY-MM-DD'. I want to know day of the week for this date.
Example. For '2005-08-21' my script should return '0' or Sunday
For '2005-08-22' it should return '1' or Monday
I want piece of code for HP-UX korn shell.
Appreciate reply on this. (5 Replies)
Hi all, I am trying to get dow from cal using below script
#! /bin/bash
YEAR=`echo $1 | cut -c 1-4`
MONTH=`echo $1 | cut -c 5-6`
DAY=`echo $1 | cut -c 7-8`
for i in 1 2 3 4 5 6 7
do
dayofweek=`cal $MONTH $YEAR | awk '$i == $DAY {printf("%s","$i")}'`
echo $dayofweek... (4 Replies)
I have been volunteered by my boss to be the sysadmin for our production redhat server. He asked me to tighten the security to avoid mishaps like "rm -f *" that occured not long ago.
Right now, we have 53 users sudo-ing into the machine and it is an audit nightmare. I am wondering if it... (15 Replies)
Hi everyone,
I have a shell script that merges many files down in to one, then removes unwanted lines, that part is working fine:
#!/bin/bash
FILES=/home/pi/temp/qbd/*
for f in $FILES
do
echo "Processing $f file..."
# take action on each file. $f store current file name
echo... (9 Replies)
Hi All,
I have the below requirement ,
if i give the week number for ex 41 i need to get the date for Monday and thursday for this given week. my expected output is 13/10/2014 (Monday's date) and 16/10/2014 (Thursday's date)
I am using GNU LINUX .
Pls help me with your thoughts.
Thanks in... (7 Replies)
Discussion started by: mohanalakshmi
7 Replies
LEARN ABOUT PLAN9
holidays
holidays(4) File Formats holidays(4)NAME
holidays - prime/nonprime table for the accounting system
SYNOPSIS
/etc/acct/holidays
DESCRIPTION
The /etc/acct/holidays file describes which hours are considered prime time and which days are holidays. Holidays and weekends are con-
sidered non-prime time hours. /etc/acct/holidays is used by the accounting system.
All lines beginning with an "*" are comments.
The /etc/acct/holidays file consists of two sections. The first non-comment line defines the current year and the start time of prime and
non-prime time hours, in the form:
current_year prime_start non_prime_start
The remaining non-comment lines define the holidays in the form:
month/day company_holiday
Of these two fields, only the month/day is actually used by the accounting system programs.
The /etc/acct/holidays file must be updated each year.
EXAMPLES
Example 1: Example of the /etc/acct/holidays file.
The following is an example of the /etc/acct/holidays file:
* Prime/Nonprime Table for the accounting system
*
* Curr Prime Non-Prime
* Year Start Start
*
1991 0830 1800
*
* only the first column (month/day) is significant.
*
* month/day Company Holiday
*
1/1 New Years Day
5/30 Memorial Day
7/4 Indep. Day
9/5 Labor Day
11/24 Thanksgiving Day
11/25 day after Thanksgiving
12/25 Christmas
12/26 day after Christmas
SEE ALSO acct(1M)SunOS 5.10 28 Mar 1991 holidays(4)
11-14-2012
