1 Overview
When the script is executed on Linux, $'\r':command not found appears. However, if you check the script carefully, the corresponding line is just a blank line, which is no problem. Then why does Linux report a blank line with a carriage return error?
The reason is this: the script is uploaded to Linux for execution after editing under the window, the +line feed under win is the carriage return line feed, that is \r\n, the line feed under Unix \n. Under linux, \r is not recognized as a carriage return, so there are more configurations for each line \r, so it is a foot 本编码的问题.
2. Solution 1
yum install dos2unix
dos2unix 脚本名
Execute on linux dos2unix 脚本名, execute the script again, the error message disappears.
3. Solution 2
sed -i 's/\r//' 脚本名