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Top Forums Shell Programming and Scripting Simpler crontab entry to execute pgm on last day of the month Post 302938511 by Don Cragun on Tuesday 17th of March 2015 07:17:01 AM
Old 03-17-2015
What operating system are you using?

When the command works from the command line, what is the output from the command?:
Code:
type date

Do you really want to run this command every minute of every hour 1 to 4 days every month?

The correct syntax for a numeric comparison in [ expression ] is:
Code:
[ 1 -eq `date +%d -d '1 day'` ]

not:
Code:
[ 1 == `date +%d -d '1 day'` ]

assuming that the date utility found on the system's default $PATH setting accepts a -d option on your system.

date +%d prints 01 on the 1st; which is not the same as 1 when performing a string comparison. You could also try a string comparison (which should use =; not ==), if you use date +%e instead of %d:
Code:
[ 1 = `date +%e -d '1 day'` ]

and this is probably safer than a numeric comparison. (Note that:
Code:
[ 1 -eq `date +%d -d '1 day'` ]

will give you a syntax error in some shells on the 8th and 9th days of the month because 08 and 09 are not valid octal values.)
 

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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)
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