In that case you could use. – Bruno9779 Apr 16 '18 at 17:37 Here are the three methods described below. echo adds a newline. The only catch with this approach is that tee will print to stdout both files. Method 1:-You can write/append content line by line using the multiple echo commands. Both files contain unique contents, and we want to join them both together without overwriting any of the data. Consider this file: line 1 line 2 line 4 For example: awk '{print $1 $2}' file.txt echo awk '{print $3, $4}' file.txt instead, as the -e option allows you to use the new line … There is a LINE FEED (LF) at the end of each line. Here is simple solution using a temporary file to prepend text: The text than you want to append can come from another text file. echo text >> file.conf. Hi, I am trying to sort a csv file which has say 10 lines each line having a row size that is upto 30183 no. You can also use the cat and append operators to merge multiple files as well. Add a line in a specific position with Linux. Insert Multiple New Line in a File Using Shell Script? echo -e "\ntext" >> file.conf. I guess that you want to add an extra line before that text, probably because your initial file doesn't end in a new line. You can use ed, sed, perl, awk and so on to add text to the beginning of a file in Bash under Linux or Unix-like systems. You can use multiple methods to write multiple lines to a file through the command line in the Linux system. There are several ways to append multiple lines to a file at once. in between the commands you want to get separate outputs. @Саша Черных 'cat source.file destination.file | tee destination.file' will append source.file at the beginning of destination.file. Do you want to insert multiple lines below of a specific line sed command will help us with different cases, For example few lines saved in a file name of linuxfaq.txt that contain bash$ cat myfile.txt >> ./path/filename.txt. Append Text from another File. of COLUMNS (Row length = 30183). By default, the tee command overwrites the specified file. Append multiple lines to a file. Append to a File using the tee Command # tee is a command-line utility in Linux that reads from the standard input and writes to both standard output and one or more files at the same time. Sometimes you may be required to write or append multiple lines to a file. As far as I know there is no prepend operator on a bash or any other shell, however there are many ways to do the same. If you need to add a line to a file in Linux, and you need to add that line in a specific position of the file there is an easy solution, even if you need to do it to hundreds of thousands of files. With the Bash shell in Linux it is quite simple to append the contents of one file to another, here we will cover how to perform file concatenation. In this example we have two files, file1 and file2. Bash prepend a text using a temporary file. 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