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What is `^M` and how do I get rid of it? - Unix Linux Stack Exchange The ^M is a carriage-return character If you see this, you're probably looking at a file that originated in the DOS Windows world, where an end-of-line is marked by a carriage return newline pair, whereas in the Unix world, end-of-line is marked by a single newline
What is the ^M character called? - Unix Linux Stack Exchange If you're using vim you can enter insert mode and type CTRL-v CTRL-m That ^M is the keyboard equivalent to \r Inserting 0x0D in a hex editor will do the task How do I remove it? You can remove it using the command perl -p -i -e "s \r g" filename As the OP suggested in the comments of this answer here, you can even try a ` dos2unix filename
有没有大神可以把力矩的物理意义讲清楚？ - 知乎 对于平动，有 F=ma ，其中 F 为合外力， m 为惯性质量（即质量）， a 为加速度；而对于转动，有 M=J\alpha ，其中 M 为合外力矩， J 为转动惯量， \alpha 为角加速度。 （对于转动也有写法为 \tau=I\alpha ，其中 \tau 为合外力矩， I 为转动惯量， \alpha 为角加速度。）
What is the purpose of -m, --match in an Iptables rule? The -m or --match option is used to enable one or more extended packet matching modules with the given name(s) Take for example the module connbytes This can be used to create rules that match how many bytes a connection has transferred