delete multiline string from file using sed.

Shell Programming and Scripting
1

Hi,

I have file which has the following content...

GOOD MORNING
**********WARNING**********
when it kicks from the kickstart, sshd daemon should start at last.
(WHEN KICKING ITSELF, NOT AFTER KICKING).

/etc/rc3.d/S55sshd ( run level specification for sshd is 55, now I would want to change this to S99sshd.

**********WARNING***********
THANKYOU

I want to write sed command to remove the data which is there in between *****WARNING****.

My expected output is:
GOODMORNING
THANKYOU

Kindly help me to do this...

Even if its in awk that is also appreciated.

2

This may be simple and will work if you have only two "WARNING" keywords in the file

#!/usr/bin/sh
start=`grep -n WARNING file1 | cut -d":" -f1 |head -1`
end=`grep -n WARNING file1 | cut -d":" -f1 |tail -1`
sed "$start,$end d" file1

3 
sed '/WARNING/,/WARNING/d'

or perl:

$_=<<EOF;
GOOD MORNING
**********WARNING**********
when it kicks from the kickstart, sshd daemon should start at last.
(WHEN KICKING ITSELF, NOT AFTER KICKING).

/etc/rc3.d/S55sshd ( run level specification for sshd is 55, now I would want to change this to S99sshd.

**********WARNING***********
THANKYOU
EOF
s/\*+WARNING\*+.*\*+WARNING\*+\n//s;
print;
4

I laid my hands on this command..I hope it helps:

user@server > sed '/^*/,/^*/d' temp.txt
GOODMORNING
THANKYOU

where temp.txt is your text above.

5

Hi everybody,

Thank you so much for your valuable reply...

Finally I used,

sed '
:loop
s|\**WARNING\**\(.*\)\**WARNING\**||
t loop
/WARNING/!b
N
b loop' filename

Thank you once again.