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Shell Programming and Scripting

Get the time with shell script

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# 1  
Old 03-20-2010
Get the time with shell script
when I get time
some times it like
Code:
$hwclock -r
Mon 07 Jul 2008 20:01:48 PM GMT  -0.486264 seconds

some times it like
Code:
$hwclock -r
Mon Jul  7 20:01:48 2008  -0.547393 seconds

the sequence is not the same all the time and I just want to use "hwclock" not "date" to get time

I want just get 200148, how to get it.
Last edited by yanglei_fage; 03-20-2010 at 11:54 AM..
# 2  
Old 03-20-2010
Code:
 date +%H%M%S

# 3  
Old 03-20-2010
Quote:
Originally Posted by jim mcnamara
Code:
 date +%H%M%S

nonono ,I just want to use hwclock -r to get
# 4  
Old 03-20-2010
Code:
hwclock -r |  awk '{ if($5 ~/:/ ) {print $5} else {print $4} }'

Consider reading the man page for hwclock and date.
# 5  
Old 03-20-2010
Quote:
Originally Posted by jim mcnamara
Code:
hwclock -r |  awk '{ if($5 ~/:/ ) {print $5} else {print $4} }'

Consider reading the man page for hwclock and date.
not very good, if the time not just to row 4 or row 5
# 6  
Old 03-20-2010
I don't usualy argue with posters, but:
the the date command is identical to hwclock -r -- per the manpage for hwclock

So what you are doing is demonstrating that you have not bothered to read documentation and then complaining because you don't understand. I'm not answering any more - find some else to complain to.
# 7  
Old 03-20-2010
Quote:
Originally Posted by yanglei_fage
not very good, if the time not just to row 4 or row 5
You gave two data samples and they did indeed have the time as either the 4th or 5th word. If other permutations are possible, you should make that clear.

Code:
sed 's/.*\(..\):\(..\):\(..\).*/\1\2\3/'
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