On Sun, Sep 19, 2021, at 3:25 PM, 積丹尼 Dan Jacobson wrote:
> $ help for
> only mentions
> for name [ [ in [ word ... ] ] ; ] do list ; done
> and needs to be updated to mention
> for (( expr1 ; expr2 ; expr3 )) ; do list ; done
Not particularly intuitive, but:
bash-5.1$ help 'for (('
for ((: for (( exp1; exp2; exp3 )); do COMMANDS; done
Arithmetic for loop.
Equivalent to
(( EXP1 ))
while (( EXP2 )); do
COMMANDS
(( EXP3 ))
done
EXP1, EXP2, and EXP3 are arithmetic expressions. If any expression is
omitted, it behaves as if it evaluates to 1.
Exit Status:
Returns the status of the last command executed.
--
vq
