Replace Command
Here is a simple way to replace text in a file, or groups of files.
Add some text to a file:
aaron@myexample:~/test$ echo “Hello World” > somefile.txt
View the contents of the file:
aaron@myexample:~/test$ cat somefile.txt
Hello World
Replace World => Dave
aaron@myexample:~/test$ replace World Dave < somefile.txt > someotherfile.txt
View the new file:
aaron@myexample:~/test$ cat someotherfile.txt
Hello Dave
You have to have mysql-server installed to get the command line tool.