Shell Programming and Scripting

ok, thanks for sharing. Is there a question here?

'%s' - Output seconds since the epoch (works at least for Linux and HP-UX 11.31)
date -d @time shows the formatted time for this UNIX timestamp, dunno why it needs that @, but it does. I put in in there for demonstration purpose only, to show the calculation works.

ah, ok - thanks - I don't have that under Solaris.

unfortunately, on my Linux Tablet (embedded TI Debian)
date -ud @`echo $time`
generates
date: invalid date '@118573'

Ok.
The most important thing is to convert hex seconds to decimal seconds,
than to minutes, hours on my Linux Tablet.

thanks,

Jack

Two things that come to mind:Because a six digit epoch time sure as hell isn't right (except if you're posting through time. In that case I might have some messages for you to relay to Mr. Thompson, Mr. Kernighan, Mr. Ritchie, and some others...)

You are completely right.
Epoch time on my old Internet Tablet is
Fri Jan 2 11:00:50 CET 1970
I loaded acu, get it wifi connected to the Internet
and expected time to reset.
Unfortunately. Nothing of this kind.

Ok. All I need is to convert sex seconds into decimal seconds
than into readable format like

01:44:46
and convert hex bytes into decimal bytes, than into something like

4.481MB or 1.026GB

I need to timestamp converted data with a real date.

Read how to configure my tablet to get connected to ntp server on boot up but don't know if it supports the described procedure.

Set time manually.
Run example and the same error, as system time has nothing to do with the problem (I suppose so).

I need to count seconds and convert into minutes, hours, days,
so I go to test example from reply.

thanks
Jack

The bash shell has built-in conversions to handle octal and hex numbers, consider the following:

svn1:~# (( x = 0377 )); echo $x
255

This example will set X to an octal value of 0377, which is 255 in decimal.

svn1:~# (( x = 0xFFFE )); echo $x
65534

This example will set x to a hex value of 0xFFFE, which is 65534.

The use of (( and )) is a shorthand for the "let" statement.