linux - 奇怪的 bash 脚本异常 - 什么是 anaconda-ks？

Question

我试图编写一个简单的 bash 脚本来打印一堆随机字符:

for i in {1..100000}
do
    echo -n $(printf \\$(printf '%03o' $(( ( RANDOM % 220 )  + 35 ))))
done

这样做没问题，但是，出于某种神秘的原因，出现了一堆非随机字符:

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Desktop Documents Downloads install.log install.log.syslog Music
Pictures Public Templates timesynch.err timesynch.log timesynch.sh
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Desktop Documents Downloads install.log install.log.syslog Music
Pictures Public Templates timesynch.err timesynch.log timesynch.sh
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Desktop Documents Downloads install.log install.log.syslog Music
Pictures Public Templates timesynch.err timesynch.log timesynch.sh
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Desktop Documents Downloads install.log install.log.syslog Music
Pictures Public Templates timesynch.err timesynch.log timesynch.sh
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Desktop Documents Downloads install.log install.log.syslog Music
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Desktop Documents Downloads install.log install.log.syslog Music
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那么，我的问题是，什么是 anaconda-ks，它如何以及为什么与所有其他内容一起出现在输出中？

Answer 1

每次您的 unquoted 命令替换产生一个 * 时，shell 将其扩展为匹配当前目录中每个文件的模式。简单的解决方案是引用它。

for i in {1..100000}
do
    echo -n "$(printf \\$(printf '%03o' $(( ( RANDOM % 220 )  + 35 ))))"
done

也就是说，没有必要捕获命令的标准输出只是为了再次输出它。

for i in {1..100000}
do
    printf \\$(printf '%03o' $(( ( RANDOM % 220 )  + 35 )))
done