Final answer:
To remove CTRL-M characters from a file in UNIX, use the 'tr' command with 'tr -d '\r' < inputfile > outputfile' or the 'sed' command with 'sed 's/\r$//' inputfile > outputfile'.
Step-by-step explanation:
To remove CTRL-M characters from a file in UNIX, you can use the tr command, which is used for translating or deleting characters. CTRL-M characters are also known as carriage return characters and are represented by '\r' in UNIX. Here is a common way to remove them:tr -d '\r' < inputfile > outputfileThis command deletes the CTRL-M characters from 'inputfile' and writes the result to 'outputfile'. Alternatively, you can use the sed command:sed 's/\r$//' inputfile > outputfileThe sed command searches for the carriage return character at the end of each line and replaces it with nothing, essentially deleting it. Remember to make a backup of the original file before making changes, as these commands will overwrite existing files.
. Using the tr command:Open the terminal and navigate to the directory where the file is located.Run the following command: tr -d ' ' < inputfile > outputfileReplace inputfile with the name of the file you want to remove CTRL-M characters from, and outputfile with the name of the new file where the modified content will be saved2. Using the dos2unix command:Open the terminal and navigate to the directory where the file is located.Run the following command: dos2unix inputfile outputfileReplace inputfile with the name of the file you want to remove CTRL-M characters from, and outputfile with the name of the new file where the modified content will be saved.