Method 1:-You can write/append content line by line using the multiple echo commands. Append Text from another File. Sometimes you may be required to write or append multiple lines to a file. In this example we have two files, file1 and file2. 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 Insert Multiple New Line in a File Using Shell Script? For example: awk '{print $1 $2}' file.txt echo awk '{print $3, $4}' file.txt 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. 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. Consider this file: line 1 line 2 line 4 You can use the cat command along with the append operator to append the content. Append multiple lines to a file. In that case you could use. echo text >> file.conf. of COLUMNS (Row length = 30183). Bash prepend a text using a temporary file. echo adds a newline. @Саша Черных 'cat source.file destination.file | tee destination.file' will append source.file at the beginning of destination.file. in between the commands you want to get separate outputs. 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. Here are the three methods described below. Sed Command in Linux - Append and Insert Lines to a File Unknown April 19, ... sed reads the file line-by-line and after removing the trailing newline, places it in the "Pattern space", ... sed "a" command lets us append lines to a file, based on the line number or regex provided. By default, the tee command overwrites the specified file. The text than you want to append can come from another text file. The only catch with this approach is that tee will print to stdout both files. Both files contain unique contents, and we want to join them both together without overwriting any of the data. 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. There are several ways to append multiple lines to a file at once. 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. There is a LINE FEED (LF) at the end of each line. Here is simple solution using a temporary file to prepend text: bash$ cat myfile.txt >> ./path/filename.txt. 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. 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