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sed - how to replace a line with a new line?

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# 1  
Old 11-04-2009
sed - how to replace a line with a new line?

HI Gurus - Need some help with sed. I have been struggling for last few hours to get this working but in vain. Here is the problem:

I have a file as shown below:
. /db2bkup/dba/standard/db2td2/instance/
. /db2bkup/dba/standard/db2td2/bin/db2td2.td2.variables
export SEND_PAGE_ONCALL="no"
export SEND_INFO_ONCALL="no"
export SENDUSRALM="no"
export SENDEMAIL="yes"
. ~$DB2INSTANCE/sqllib/db2profile
export compressbkup="compress" #to compress use the following syntax compressbkup="compress"
##export backupdir='/db2bkup/TD2/online/data1,/db2bkup/TD2/online/data2,/db2bkup/TD2/online/data3,/db2bkup/TD2/online/data4'
export backupdir='/db2/TD2/bkup01/online/data1,/db2/TD2/bkup01/online/data2,/db2/TD2/bkup01/online/data3,/db2/TD2/bkup01/online/data4'
#to use multiple directories. Ex. export backupdir='/db2bkup01/sample1,/db2bkup01/sample2'

The line is question is line 12 (need not be line 12 always; just happens to be the one in the above script) and is shown below: (Note there is a similar line 11 but with comments. I want to leave this line 11 as it is).

export backupdir='/db2/TD2/bkup01/online/data1,/db2/TD2/bkup01/online/data2,/db2/TD2/bkup01/online/data3,/db2/TD2/bkup01/online/data4'

I want to replace this line with a memory variable (say $newfilepath).
How do I search specifically for this line in the file and replace it using sed or for that matter any other command ?

Please help. Thank you for your time.
# 2  
Old 11-04-2009
Thank you thegeek.
This will work only in the present case. But, my files might have anything from

export backupdir='/db2/TD2/bkup01/online/data1'
export backupdir='/db2/TD2/bkup01/online/data1,/db2/TD2/bkup01/online/data2'

pl help.
# 3  
Old 11-04-2009
So !!!!

If you want to replace all the three lines, then use the common part in the find place, that is in the first part of s@@.

Got it ?!

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