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Bash腳本進階學習 - 深入探索shell scripting之藝術
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A colon is acceptable as a function name. > `在程式中的函數名稱中,冒號是被許可加入的其中的元素之一。`
# Contains a : (null command), and so is not empty. > `# 這個函數中包含一個冒號(空白命令),因此此函數並非空白的。` ! reverse (or negate) the sense of a test or exit status [bang]. The ! operator...