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  #1 (permalink)  
Old 05-16-2007
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Join Date: Aug 2001
Posts: 58
Double Substitution variables in ksh
Hi

I have a variable whose value is like this
i=/test/test1/test2/myfile.cd.070505123457
i would like to have the value of myfile.cd stored into another variable

my attempt is
test=${i##*/} ;echo $test ##and i get
myfile.cd.070505123457

since what i wnat is myfile.cd i try this
test={{${i##*/}}##.} ;echo $test
and i get an error

Any idea how do i get what i want ?

regards
xiamin
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  #2 (permalink)  
Old 05-16-2007
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Location: Bangalore,India
Posts: 1,397
Code:
i=/test/test1/test2/myfile.cd.070505123457
test=${i##*/}
test=${test%.*}
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  #3 (permalink)  
Old 05-16-2007
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Join Date: Aug 2001
Posts: 58
Hi Anbu

Thanks for your reply
I was wundering if we could do that in one line

regards
xiamin
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  #4 (permalink)  
Old 05-16-2007
Ygor's Avatar
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Join Date: Oct 2003
Location: -31.96,115.84
Posts: 1,243
Try...
Code:
test=$(expr $i : '.*/\(.*\)\..*')
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  #5 (permalink)  
Old 05-16-2007
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Join Date: Aug 2001
Posts: 58
Hi Ygor

Your solution works like charm..

But now i am pulling my hair out trying to understand what magic your code tries to do...

Can you please explain or else i might go bald :-)

regards
Hrishy
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  #6 (permalink)  
Old 05-16-2007
Perderabo's Avatar
Unix Daemon
  

Join Date: Aug 2001
Location: Washington DC Area
Posts: 8,466
Quote:
Originally Posted by xiamin
I was wundering if we could do that in one line
Code:
i=/test/test1/test2/myfile.cd.070505123457 ; test=${i##*/} ; test=${test%.*}
Sorry, I couldn't resist...
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  #7 (permalink)  
Old 05-16-2007
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Join Date: Aug 2001
Posts: 58
Hi Perderabo

Your welcome :-)

Sometimes we are tempted and take the bait ;-).I guess you are seduced by unix

regards
Hrishy
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