Often you may want to use Bash to add a suffix to the end of each line in a file.
You can use the following syntax to do so:
sed 's/$/ city/g' cities.txt
This particular example will add the suffix ” city” to the end of each line in the text file named cities.txt.
Here is what the various sed commands do:
- s: Substitutes one pattern for another
- $: Specifies that the end of the line ( $ ) should be replaced
- city-: Specifies that a space followed by “city” should be used as replacement
- g: Specifies that substitutions should be made “globally”, i.e. for all occurrences
The following example shows how to use this syntax in practice.
Example: How to Add Suffix to Each Line in File Using Bash
Suppose that we have a file named cities.txt that contains the names of various U.S. cities.
We can use the cat command to view the contents of this file:
Now suppose that we would like to add the suffix ” city” to the end of each line in the file.
We can use the following syntax to do so:
sed 's/$/ city/g' cities.txt
The following screenshot shows how to use this syntax in practice:
Notice that the suffix ” city” has been added to the end of each line in the file.
Also note that you could use the > command to save these results to a new file:
sed 's/$/ city/g' cities.txt > new_cities.txt
The following screenshot shows how to use this syntax in practice:
Notice that when we use the cat command to view the contents of the new file named new_cities.txt we can see that the suffix ” city” has been added to the end of each line in the file.
Related Tutorials
The following tutorials explain how to perform other common tasks in Bash:
Bash: How to Extract Text Between Two Strings
Bash: How to Replace Multiple Characters in String
Bash: How to Replace All Occurrences of String in File
