UNIX for Dummies Questions & Answers

Dear All,

Hv a very specific requirement.

I have a very large text file and in which I have to match a pattern and insert a line above and below.

Eg:

My file

cat test
date1
date2
date3
date4

I need to match 'date3' and insert "Reminder1" above date3 and insert 'reminder2' below date3

Output
date1
date2
Reminder1
date3
reminder2
date4

.Kindly help. I googled many options but found link only for inserting blank line above and below.

Its very urgent.

Thanks & Regards,
Geetha

You try the following,

Code:

sed -r 's/^(PATTERN)$/Reminder1\n\1reminder2/' <file>

If you want to affect the changes in the file,use -i option in the above sed command.

try

Code:

sed 's/date3/Reminder1\n&\nReminder2/' test

I am getting the following error,

P01:~$sed -i 's/^PRODUCTIVITY$/Reminder1\n\1reminder2/' servernotification.txt
sed: Not a recognized flag: i
Usage: sed [-n] Script [File ...]
sed [-n] [-e Script] ... [-f Script_file] ... [File ...]

---------- Post updated at 11:01 AM ---------- Previous update was at 10:57 AM ----------

P01:~$sed 's/PRODUCTIVITY/Reminder1\n&\nReminder2/' servernotification.txt

NIKIRA: sdr_rate CHANGE - 02/05/2010
NXT SERVER PASSWORD CHANGE - 02/05/2010
NXT FMSDB DB PASSWORD CHANGE - 02/05/2010
NXT BCV PASSWORD CHANGE - 22/04/2010
NXT CYBER ARC PASSSWORD CHANGE - 29/04/2010
NXT DOWNTIME ACTIVITY ON - 17/04/2010
NIKIRA DB PASSWORD CHANGE - 14/04/2010
NXT DOWNTIME ACTIVITY ON - 24/04/2010
DO NOT FORGET CYBER ARC - 14/04/2010
Reminder1nPRODUCTIVITYnReminder2 MATRIX - 14/04/2010

The output is as shown above. But I want it on seperate lines.

NIKIRA: sdr_rate CHANGE - 02/05/2010
NXT SERVER PASSWORD CHANGE - 02/05/2010
NXT FMSDB DB PASSWORD CHANGE - 02/05/2010
NXT BCV PASSWORD CHANGE - 22/04/2010
NXT CYBER ARC PASSSWORD CHANGE - 29/04/2010
NXT DOWNTIME ACTIVITY ON - 17/04/2010
NIKIRA DB PASSWORD CHANGE - 14/04/2010
NXT DOWNTIME ACTIVITY ON - 24/04/2010
DO NOT FORGET CYBER ARC - 14/04/2010
Reminder1n
PRODUCTIVITY MATRIX - 14/04/2010
nReminder2

Use -r and -i option together.