How to get past 30 mins time in Solaris?

Shell Programming and Scripting
1

Hi guys,

could you help to find a way to get the past 30 mins time in solaris.

version:

bash-3.00# uname -a
SunOS solaris 5.10 Generic_142910-17 i86pc i386 i86pc

I had tried the following ways, it works fine in GNU Linux, but doesn't work in Solaris.

[root@book ~]# date
Tue Apr  2 01:01:49 CST 2013
[root@book ~]# date --date="-30 minutes"
Tue Apr  2 00:32:02 CST 2013
[root@book ~]# date -d '-30 minutes'
Tue Apr  2 00:32:27 CST 2013

thanks!

2

Look at the clock command, it requires TCL 8.5 or of course perl.

3

See

Or install GNU date.

4

Hi blackrageous,

if we use perl, how to write this command? I am not familiar perl :frowning:

Thanks!

---------- Post updated at 09:43 PM ---------- Previous update was at 08:40 PM ----------

I find the perl way to implement this requirement.

#!/usr/bin/perl

$now=localtime(time());
$then=localtime(time()-1800);

print "now is $now\n";
print "then is $then\n";

Thanks for your help!

5

localtime() has actually two representations, array and scalar.
By assigning it to a $variable the scalar representation is forced.
Certain functions like print can handle both representations, so a cast to scalar is necessary:

perl -le 'print scalar localtime(time-1800)'