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increment a Variable

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# 1  
Old 07-13-2005
increment a Variable
hi,

i want to increment a Variable but it doesnt work.

here my codé
Code:
COUNT=1
COUNT= 'expr $COUNT + 1'

i've tried it in the prompt but it print me:
expr: syntaxerror

What does I make wrong?
# 2  
Old 07-13-2005
Use

Code:
count=1
count=$((count+1))

vino
# 3  
Old 07-13-2005
thank you

now it works
# 4  
Old 07-13-2005
be careful of spaces. You can't have spaces around =

COUNT=`expr $COUNT + 1`

vinos method uses the bash specific syntax
which will run faster as it doesn't need to
start a seperate expr process per increment.
# 5  
Old 07-13-2005
ok pixelbeat
thanks
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