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 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
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