topic Re: help--with sed in Operating System - Linux

help--with sed

Karthik_sg — Wed, 23 Jan 2008 13:17:23 GMT

Hi all,
I have a file called fields.txt and i have the following in it as contents
`cat /ghl`
echo "debug"
echo "complete"
My question is how do i insert some text in the first line before `cat /ghl` using sed.
And how do i insert after last word in the last line using sed.Please help me guys its urgent...
Please give the code..thanks in advance..

Re: help--with sed

Ivan Ferreira — Wed, 23 Jan 2008 13:30:08 GMT

If you run this:

sed "1 s/^/word_to_insert /" filename

You will add "word_to_insert " to the begining of the first line in "filename".

Re: help--with sed

Ivan Ferreira — Wed, 23 Jan 2008 13:46:04 GMT

BTW karthik, I see in your profile "I have assigned points to 5 of 66 responses to my questions."

Please keep asigning points. For help about this, see:

http://forums1.itrc.hp.com/service/forums/helptips.do?#28

Re: help--with sed

James R. Ferguson — Wed, 23 Jan 2008 18:59:31 GMT

Hi:

# sed -e '1 s/^/_BEGIN_/' -e '$ s/$/_END_/' fields.txt

...using your example, this would yield:

_BEGIN_`cat /ghl`
echo "debug"
echo "complete"_END_

Regards!

...JRF...

Re: help--with sed

H R Dileepkumar — Thu, 24 Jan 2008 07:25:25 GMT

hi friend,

to insert some text first line before. use this command line

sed "1 s/^/word_to_insert /" filename

to insert some text lost line before. use this command line

sed "(lost line number) s/$/word_to_insert /" filename