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r command not found
source link: https://jimolonely.github.io/2019/10/15/shell/003-carriage-linechange/
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r command not found
当然，这个由于操作系统之间的差异构成的回车换行符。
下面说说windows下的脚本拷到linux上出现这个问题时怎么解决：
1.直接替换掉
sed -i 's/\r$//' filename
2.使用工具替换掉
# install dos2unix
dos2unix test.sh
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