|
On 01/17/2013 02:15 PM, Clark WANG
wrote:
On Thu, Jan 17, 2013 at 1:41 PM,
MaShimiao <address@hidden>
wrote:
Hi,all.
According to changelog, there is a shell's new feature about
non-interactive mode.
It says non-interactive mode shells exit if -u is enabled and
an attempt in made to use an unset variable with the % or #
expansions, the '//', '^', or ',' expansion, or the parameter
length expansion.
"if -u is enabled", does it mean "shopt -u
interactive_comments" or anything else?
Should be "set -u" (Treat unset variables as an error when
substituting.)
Got it, Thank you very much.
|