Shell Programming and Scripting

Hi,

Can you please help me to find/display out last Friday's date of the month using awk command in Unix/Linux.

i have found this command

Code:

cal 03 2013 | awk 'NF>5{last = $6} END{print last}'

it show the output in single digit date like :29

But i need its output will shown in Fri Mar 29 2013

Please help.

You don't need awk for this requirement.

If you have ksh93, it has built-in printf that supports %T formatting option:

Code:

#!/bin/ksh93

printf "%(%a %b %d %Y)T\n" "last friday in Mar 2013"

No i don't wana to use Ksh shell.

Are you limited to awk or can you use other unix tools? If not, why? Is this a homework assignment? Also, what operating systems must this support? Just GNU/Linux?

Finally, thank you for starting your own thread. Everything works much better this way.

Regards,
Alister

Awk has very C like functions for time. You can get the time, reformat it into components, adjust the day and date, make time and reformat it into components again. For instance, if it is Saturday, last Friday might be defined as yesterday, or 8 days back. Time Functions - The GNU Awk User's Guide Which awk or O/S is this?

No its not my homework assignment,this task have assigned by my senior,

I just want to need modification in awk because output should be shown in
[Fri Mar 29 2013] this format.

another solution/way are most welcome (without ksh) to resolve my below mentioned queries.

To find/display out last Friday's date of the month

When you ask for help, please provide information regarding the operating system and shell, at minimum. When this information is not provided, some members will not help you because it's very possible that the effort they would devote to your solution would be a waste of time. I asked you for this information above but you have still not provided it.

I will assume you are using a Linux distro. If my solution doesn't work, then you must provide the information requested.

Building from your initial approach:

Code:

m=03
y=2013
d=$(cal $m $y | awk 'NF>5 {fri=$6} END {print fri}')
date -d "$y$m$d" +'%a %b %d %Y'

Regards,
Alister