Add text at the end of each line

Question

I\'m on Linux command line and I have file with

127.0.0.1
128.0.0.0
121.121.33.111

I want

127.0.0.1:80
128.0.0.0:80
121.121         


        

Answer 1

sed -i 's/$/,/g' foo.txt

I do this quite often to add a comma to the end of an output so I can just easily copy and paste it into a Python(or your fav lang) array

Answer 2

1. You can also achieve this using the backreference technique

   sed -i.bak 's/\(.*\)/\1:80/' foo.txt
   

2. You can also use with awk like this

   awk '{print $0":80"}' foo.txt > tmp && mv tmp foo.txt
   

Answer 3

If you'd like to add text at the end of each line in-place (in the same file), you can use -i parameter, for example:

sed -i'.bak' 's/$/:80/' foo.txt

However -i option is non-standard Unix extension and may not be available on all operating systems.

So you can consider using ex (which is equivalent to vi -e/vim -e):

ex +"%s/$/:80/g" -cwq foo.txt

which will add :80 to each line, but sometimes it can append it to blank lines.

So better method is to check if the line actually contain any number, and then append it, for example:

ex  +"g/[0-9]/s/$/:80/g" -cwq foo.txt

If the file has more complex format, consider using proper regex, instead of [0-9].

Answer 4

Using a text editor, check for ^M (control-M, or carriage return) at the end of each line. You will need to remove them first, then append the additional text at the end of the line.

sed -i 's|^M||g' ips.txt
sed -i 's|$|:80|g' ips.txt

Answer 5

Concise version of the sed command:

sed -i s/$/:80/ file.txt

Explanation:

• sed stream editor
  • -i in-place (edit file in place)
  • s substitution command
  • /replacement_from_reg_exp/replacement_to_text/ statement
  • $ matches the end of line (replacement_from_reg_exp)
  • :80 text you want to add at the end of every line (replacement_to_text)
• file.txt the file name

Answer 6

sed 's/.*/&:80/'  abcd.txt >abcde.txt