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$$? determines the exit status of the executed command. the $$ followed by numbers (e.g. $1, $2, etc.) represents the parameters in the shell script.
$?
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$1
$2
$ determines the exit status of the executed command. the $ followed by numbers represents the parameters in the shell script.
$? determines the exit status of the executed command. $ followed by numbers (e.g. $1, $2, etc.) represents the parameters in the shell script.
