How to print formatted (!) the current timestamp?
Thomas Blabb
The following does not work:
print STDOUT "Now=%Y%m%d-%H%M\n", localtime(time);
What is wrong?
How else can I print out a formatted timestamp?
Tom
Owen
Try
use POSIX qw(strftime);
print strftime "%Y%m%d-%H%M\n", localtime;
Owen
Keith Keller
> I want to print the current time(stamp) in formatted style.
> The following does not work:
>
> print STDOUT "Now=%Y%m%d-%H%M\n", localtime(time);
Did you read perldoc -f localtime?
If you are happy with localtime's formatting, simply print it as a
scalar:
print scalar localtime();
If you want to use a print-equivalent statement to do your formatting,
you need to use printf. Also, perl date formatting has nothing to do
with UNIX date; %Y for example is the hash named Y, and bears no
relation at all to your call to localtime. Read perldoc -f sprintf for
valid formats (%Y is certainly not one).
--keith
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Gunnar Hjalmarsson
> perl date formatting has nothing to do with UNIX date; %Y for example
> is the hash named Y, and bears no relation at all to your call to
> localtime. Read perldoc -f sprintf for valid formats (%Y is
> certainly not one).
Wouldn't it have been better to point the OP to POSIX::strftime() and
drop that rant?
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Gunnar Hjalmarsson
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Ben Morrow
Quoth Keith Keller <kkeller...@wombat.san-francisco.ca.us>:
> On 2008-05-04, Thomas Blabb <t.b...@gmail.com> wrote:
> > I want to print the current time(stamp) in formatted style.
> > The following does not work:
> >
> > print STDOUT "Now=%Y%m%d-%H%M\n", localtime(time);
>
> If you want to use a print-equivalent statement to do your formatting,
> you need to use printf. Also, perl date formatting has nothing to do
> with UNIX date; %Y for example is the hash named Y, and bears no
> relation at all to your call to localtime. Read perldoc -f sprintf for
> valid formats (%Y is certainly not one).
...however it is a valid format for strftime, which I suspect is what
the OP wanted.
use POSIX qw/strftime/;
print STDOUT strftime "Now=%Y%m%d-%H%M\n", localtime;
Ben
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Uri Guttman
KK> On 2008-05-04, Thomas Blabb <t.b...@gmail.com> wrote:
>> print STDOUT "Now=%Y%m%d-%H%M\n", localtime(time);
KK> If you want to use a print-equivalent statement to do your formatting,
KK> you need to use printf. Also, perl date formatting has nothing to do
KK> with UNIX date; %Y for example is the hash named Y, and bears no
KK> relation at all to your call to localtime. Read perldoc -f sprintf for
KK> valid formats (%Y is certainly not one).
actually %Y is just the string '%Y' there. hashes don't interpolate in
strings. and yes, the OP is confusing time formats (date and strftime)
with printf formats.
uri
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Keith Keller
> Keith Keller wrote:
>> perl date formatting has nothing to do with UNIX date; %Y for example
>> is the hash named Y, and bears no relation at all to your call to
>> localtime. Read perldoc -f sprintf for valid formats (%Y is
>> certainly not one).
>
> Wouldn't it have been better to point the OP to POSIX::strftime() and
> drop that rant?
Was I ranting? I thought I was just being complete. Thanks for the
pointer to POSIX::strftime; I seldom use the POSIX:: modules.
Gunnar Hjalmarsson
> On 2008-05-04, Gunnar Hjalmarsson <nor...@gunnar.cc> wrote:
>> Keith Keller wrote:
>>> perl date formatting has nothing to do with UNIX date; %Y for example
>>> is the hash named Y, and bears no relation at all to your call to
>>> localtime. Read perldoc -f sprintf for valid formats (%Y is
>>> certainly not one).
>>
>> Wouldn't it have been better to point the OP to POSIX::strftime() and
>> drop that rant?
>
> Was I ranting? I thought I was just being complete. Thanks for the
> pointer to POSIX::strftime; I seldom use the POSIX:: modules.
The attempt to use the string '%Y%m%d-%H%M' in a date formating context
told us that the OP was groping for strftime(). Considering that Owen
had figured it out several hours before you posted, I found it not very
fruitful to lead the OP away from that date formating method.