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Re: math, percentage




----- Original Message ----- From: "Dan Nelson" <dnelson@xxxxxxxxxxxxxxx>
To: "Brian K. White" <brian@xxxxxxxxx>
Cc: <zsh-users@xxxxxxxxxx>
Sent: Saturday, December 31, 2005 2:25 AM
Subject: Re: math, percentage


In the last episode (Dec 31), Brian K. White said:
is there a way to do this with built in math instead of running bc ?

tp=`echo "scale=0;(${t}*100)/$T" |bc`

T = some dynamic total number like `ls |wc -l`
t = counter that starts at 1 and incriments as a loop walks through T
tp = percent of total job completed so far

(( tp=t*100/T ))

Nice.
Never knew you could do the assignment inside the braces like that,
but even so I should have thought to at least try tp=$((t*100/T)) since I use n=$((n+1)) a hundred times a day.

thanks
Brian K. White  --  brian@xxxxxxxxx  --  http://www.aljex.com/bkw/
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