Arithmetic operations in bash,ksh,sh


 
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# 1  
Old 02-01-2010
Arithmetic operations in bash,ksh,sh

Guys,

The below expression is valid in which shells (sh,ksh,bash,csh)?

VAR1=2
VAR2=$(($VAR1 -2))

Thanks
# 2  
Old 02-01-2010
In modern unix it is valid in all of them. "sh" is the Posix shell.
In older unix where "sh" is the old Bourne Shell it is not valid.
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