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Negative testing in unix

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# 1  
Old 09-16-2011
Negative testing in unix
how can we do negative testing in unix ?
# 2  
Old 09-16-2011
Do you mean like this?
Code:
if ! false; then
  echo not false
fi

# 3  
Old 09-18-2011
Or perhaps variables less than zero:

Code:
VAL=-2
[ $VAL -lt 0 ] && echo "Var is Negative"

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