Script help

[Greg Stark_1]

Hello,

I need help with a script that I want to add a line to an existing file in a certain spot. For instance, take the following file:

NAME "server_DLT"
DESCRIPTION "server_DLT"
HOST server.com
POLICY Standalone
TYPE DLT
POOL "server_DLT"
CLEANME
DRIVES
"/dev/rmt1"

and change it to:

NAME "server_DLT"
DESCRIPTION "server_DLT"
HOST server.com
POLICY Standalone
TYPE DLT
POOL "server_DLT"
EJECT
CLEANME
DRIVES
"/dev/rmt1"

i.e. add the EJECT line after the POOL line. Any help would be greatly appreciated.

Thanks in advance,
Greg

[Scott Robertson]

Greg,

This works for me, assuming that there is only one keyword POOL. Also, be warned, everytime you run this it will keep adding the word EJECT after POOL.

#!/bin/sh
ed filename </^POOL /
a
EJECT
.
w
q
STOPHERE

[Rodney Hills]

From perl you can do the following

perl -n -i -e 'print $_; print "EJECT\n" if /^POOL/' yourscriptfile

This will process the file and add EJECT after the line beginning with POOL

[Bernie Vande Griend]

Or just use sed:

sed '/CLEANME/iEJECT' copyoffile > filename

[Bernie Vande Griend]

hmm, looks like it takes out backslashes.
There should be a backslash after the /i
and CHANGE should be on the next line.

[James R. Ferguson]

Hi Greg:

Here's how I would do this:

#!/usr/bin/sh
echo "/POOL/a\\\\\nEJECT" > /tmp/sed.cmd
sed -f /tmp/sed.cmd /tmp/inp > /tmp/out
mv /tmp/out /tmp/inp
#.end.

The echo creates a sed script (command) file that looks like this:

/POOL/aEJECT

The 'a' says "append" after the match is made with "POOL".

Regards!

...JRF...