Append a block of text into a particular section of a file?

kushalkoolwal · 03-16-2010, 02:41 PM

So I have file which looks something like this:

cat .opera/operaprefs.ini

Code:

[User Prefs]
Language Files Directory=
Preferences Version=2
Has Restored MIME Flag=1
Trust Server Types=0
Enable Usage Statistics=0
Address Search Drop Down Width=180
DevTools Splitter Position=500
History View Style=0

[Extensions]
Plugin Failed Warning=1

[Security Prefs]
Enable SSL v3=1
Enable TLS v1.0=1
Enable TLS v1.1=1
Enable TLS v1.2=1

and I would like it to make it look this (see text in red color):

Code:

[User Prefs]
Language Files Directory=
Preferences Version=2
Has Restored MIME Flag=1
Trust Server Types=0
Enable Usage Statistics=0
Address Search Drop Down Width=180
DevTools Splitter Position=500
History View Style=0
Home URL=http://www.example.com
Ignore Target=0
Target Destination=0
Ignore Unrequested Popups=1

[Extensions]
Plugin Failed Warning=1

[Security Prefs]
Enable SSL v3=1
Enable TLS v1.0=1
Enable TLS v1.1=1
Enable TLS v1.2=1

i.e. basically append the text in red color. So what is the best way to do this? sed, awk I suppose.

All I am trying to is to set the Home Page of the opera through script/command line.

Thanks

pixellany · 03-16-2010, 02:58 PM

SED has the append and insert commands (a and i)

http://www.grymoire.com/Unix/Sed.html#uh-39

Or read in from a file using r:

http://www.grymoire.com/Unix/Sed.html#uh-37