Is there a way to add text to the last line of a file?
That will add the text >end> to the last line (without newlines) of the file. Of course, in this case (as in your example also) it needs that the file contains at least one line (not empty). Using double quotes (as in the selected answer) is not a good idea as then the shell will try to process each $ in the string.
How to print the last line of a file?
Specifying -r causes tail to print lines from the end of the file in reverse order. The default for -r is to print the entire file this way. Specifying -f causes tail not to quit at the end of the file, but rather to reread the file repeatedly (useful for watching a “growing” file such as a log file).
How to display the last lines of a file in Unix?
Display the last lines of a file in Unix Use the Unix command tail to read from standard input or a file and send the result to standard output (that is, your terminal screen). The format for using the tail command is: tail [ +- [number] [lbcr] ] [file]
How to insert two lines at end of file?
Use sed ‘append (a)’ command. For example, to append two lines at the end of file: In a simple way to write and make the changes in the contents at a specific line in a file . If you want to insert anything at a specific line number then below command can be used: where 2i – line number 2 and i stands for inserting .
How to replace a line in a text file with SED?
I have also written a related article on setting and replacing values in a properties file using sed. In these examples, we will be dealing with a text file named “text.txt” that contains the following content: The simplest case is replacing an entire line by finding the line that starts with the match.
How to insert a line before or after a match?
In these examples, we will be dealing with a text file named “text.txt” that contains the following content: The simplest case is replacing an entire line by finding the line that starts with the match. Then we have the case where we need to insert a line after the match.