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Old 12-03-2004, 01:06 AM   #1
subu_s
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Usage of 'expr' command


Hi friends,
Wld be a very basic question for most of you.

I need to use expr to do something like '10 / 20 * 100' and the result should be 50

expr gives me a syntax error .

Pls. help.

Regds,
Subu
 
Old 12-03-2004, 01:17 AM   #2
subu_s
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Seems that I had not escaped the operators '*' and '/'
Is working fine now
 
Old 12-03-2004, 01:23 AM   #3
chrism01
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Bash (prob all shells) only does integer maths. You'll need to use the bc tool to get the right answer.
eg:
t=$((10/20*100))
echo $t
0

would be the same with expr eg
t=`expr 10 / 20`
echo $t
0

....
 
  


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