Sed append text to end of line if line contains specific text? How can this be done?
 

Hi All,
I'm trying to get sed to add some text to the end of a line if that line contains a specific piece of text.

Quite simple i have a script...
echo blah
df -h
echo blah1
cd /usr/share
echo blah2
ls -al
echo blah1

And i want to use sed (i think is probably right for the job) to add text to the end of all the lines that are 'echo'

I've seen that you can :-
sed 's/$/text/' filename

But that appends to every single line i want to do something like
sed 's|echo*$|>> /var/log/output_to_log.txt|' filename

As you can see i want all the echo's to send out to a log, in the script i've already created but at the moment the echo's just send to stout, and i could run the script with filename 2>&1 /var/log/output_to_log.txt, but i'm trying to do it this other way.

Any ideas?
Cheers,
MJ

Hi.

This works for me:
Producing:
The page http://www.grymoire.com/Unix/Sed.html is often mentioned as useful for learning sed ... cheers, makyo

Deleted as makyo's example:

sed -i '/echo/s|$| >> /var/log/output_to_log.txt|' filename

is more relevant and elegant.

Sweet thanks guys both ideas work great. And great website not seen that one before.. cheers
MJ

so one liner
 

sed -e " /^http/s|$|\'| " -e "s/^http/\'http/"

sed -e " /^http/s|$|\'| ; s/^http/\'http/"

err to one liner ( better ) without two -e please


from

http://foo.foo.com

to

'http://foo.foo.com'