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是正则么?看帮助不是这么说的:
case word in [ [(] pattern [ | pattern ] ... ) list ;; ] ... esac
A case command first expands word, and tries to match it against each pattern in turn, using the same
matching rules as for pathname expansion (see Pathname Expansion below). The word is expanded using
tilde expansion, parameter and variable expansion, arithmetic substitution, command substitution, pro-
cess substitution and quote removal. Each pattern examined is expanded using tilde expansion, parameter
and variable expansion, arithmetic substitution, command substitution, and process substitution. If the
shell option nocasematch is enabled, the match is performed without regard to the case of alphabetic
characters. When a match is found, the corresponding list is executed. After the first match, no sub-
sequent matches are attempted. The exit status is zero if no pattern matches. Otherwise, it is the
exit status of the last command executed in list. |
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