strftime when not using gawk 3

[pigna]

I have this command running on Linux :

vmstat 30|awk '{now=strftime("%Y%m%d %T"); print now $0}'

But on Solaris I obviously don't have strftime. Any options or custom function to create same behaviour...

 

[feherke]

Hi

vmstat 30|awk '{"date +%Y%m%d\\ %T" | getline now; print now $0}'

Feherke.

http://rootshell.be/~feherke/

 

[pigna]

Thanks for your quick reply Feherke!

As far as I can see the difference between the two is that the original version updates the timestamp per record. The 2nd has a fixed timestamp...

 

[PHV]

And what about this ?
vmstat 30|awk 'BEGIN{cmd="date +\"%Y%m%d %T\""}{cmd | getline now;print now $0;close(cmd)}'

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[pigna]

That did it super !! Thank you ...

 

[pigna]

Damn I was too excited yesterday when experimenting on my test system. It seems the prod system has the very basic awk and that one does not alow for "command" | getline syntax.

(seems only supported by NAWK and GAWK).

Guess that means: not possible in this version?

 

[feherke]

Hi

As far as I know, that [highlight #eee]"command" | getline[/highlight] is standard [tt]awk[/tt]. [tt]mawk[/tt] can do it also.

At this point I would try an off-topic solution :

vmstat 30 | perl -pe '@t=localtime;printf"%d%02d%02d %02d:%02d:%02d",$t[5]+1900,$t[4]+1,$t[3],$t[2],$t[1],$t[0]'

Feherke.

http://rootshell.be/~feherke/

 

[Annihilannic]

Are your test and production systems the same versions of Solaris? Does which awk point to the same location on both systems?

Try using nawk or /usr/xpg4/bin/awk instead. It does seem that the extremely old /usr/bin/awk on Solaris doesn't support command | getline.

Annihilannic.

 

[pigna]

My mistake. I didn't know the Solaris box had multiple versions of awk installed. Using nawk made my last question obsolete.

Thanks all for your quick support!!