Bash-Beginners-Guide

sandy ~> sed -n '/a text/,/This/p' example
It is a text with erors.
Lots of erors.
So much erors, all these erors are making me sick.
This is a line not containing any errors.
sandy ~>
Bash Guide for Beginners
5.2.4. Find and replace with sed
In the example file, we will now search and replace the errors instead of only (de)selecting the lines
containing the search string.
sandy ~> sed 's/erors/errors/' example
This is the first line of an example text.
It is a text with errors.
Lots of errors.
So much errors, all these erors are making me sick.
This is a line not containing any errors.
This is the last line.
sandy ~>
As you can see, this is not exactly the desired effect: in line 4, only the first occurrence of the search string has
been replaced, and there is still an 'eror' left. Use the g command to indicate to sed that it should examine the
entire line instead of stopping at the first occurrence of your string:
sandy ~> sed 's/erors/errors/g' example
This is the first line of an example text.
It is a text with errors.
Lots of errors.
So much errors, all these errors are making me sick.
This is a line not containing any errors.
This is the last line.
sandy ~>
To insert a string at the beginning of each line of a file, for instance for quoting:
sandy ~> sed 's/^/> /' example
> This is the first line of an example text.
> It is a text with erors.
> Lots of erors.
> So much erors, all these erors are making me sick.
> This is a line not containing any errors.
> This is the last line.
sandy ~>
Insert some string at the end of each line:
sandy ~> sed 's/$/EOL/' example
This is the first line of an example text.EOL
It is a text with erors.EOL
Lots of erors.EOL
So much erors, all these erors are making me sick.EOL
This is a line not containing any errors.EOL
This is the last line.EOL
sandy ~>
Chapter 5. The GNU sed stream editor 65