更新 echo 命令
@@ -59,8 +59,8 @@ echo 可以显示变量的值:
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`echo -n "Progress: ["`
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`for i in {1..20}; do`
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`echo -n "#"`
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`sleep 0.1`
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`done`
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`for i in {1..20}; `
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`do echo -n "#"; `
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`sleep 0.1 ;`
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`done` ;
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`echo "] Done!"`
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