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Shell script issue on date and day

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# 1  
Old 03-31-2014
Shell script issue on date and day
Hi friends,

I wanna check if any given date is Friday, as an example I have written a simple script as shown below

Code:
 
#!/bin/ksh
v_date=20140325
if [ $($v_date +%a) == "Fri" ] ; then
echo 'HELLO'
else
echo 'BYE'
fi

But when I am executing its throwing an error as shown below,

Code:
 
+ v_date=20140325
+ 20140325 +%a
simple.sh[5]: 20140325:  not found.
+ [ == Fri ]
simple.sh[5]: test: 0403-004 Specify a parameter with this command.


Any help is much appreciated!!
# 2  
Old 03-31-2014
You're trying to 'run' a date, which is not executable. You could try this depending on your OS and version of date:
Code:
date --date="20140325" +%a

# 3  
Old 03-31-2014
That error message looks like it's from AIX, in which case -d option of date will not be supported.

You could use perl eg:

Code:
dow=$( echo "20140325" | perl -ne 'use POSIX qw(strftime);use Time::Local; /(....)(..)(..)/;  print strftime("%u",localtime(timelocal(0,0,0,$3,$2 - 1, $1)));' )
if [ $dow -eq 5 ]
then
   echo 'HELLO'
else
    echo 'BYE'
fi

# 4  
Old 03-31-2014
Ok Champs thanks very much for your help!! its really much appreciated
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