reg sed

[mummaneni]

Hi Everybody,

sed '/<pattern>/r <file1>' <file2>
This adds the contents of file1 in file2 after pattern,

But I want to insert some data from a file before a pattern. How to do that by using sed.

Please suggest me...

Thanks Inadvance
Mummaneni.

[Franklin52]

Can you include a sample of the files and what you wish to accomplish?

Regards

[mummaneni]

Hi,

lets assume the contents of the files:
file1 contains
one
two
three
four
and file2 contains
seven
eight
nine

by using sed, we can insert the data of a file after a pattern

sed '/three/r file1' file2
now the O/P will be:
one
two
three
seven
eight
nine
four

But I want to add contents of file2 before three of file1
for ex:
one
two
seven
eight
nine
three
four

This is my requirement.. please help me out

Thanks & Regards,
Mummaneni.

[vsemaska]

I think I see what he wants.

Say file1 contains:
aaa
bbb
ccc
ddd
eee

file2 contains:
111
222
333
444
555

If /<pattern>/ is /333/ he wants the result to be:
111
222
aaa
bbb
ccc
ddd
eee
333
444
555

I came up with not one sed command but this:
sed '/333/,$d' file2; cat file1; sed -n '/333/,$p' file2

I know it's a kludge but it works.

[drl]

Hi.

If the file is not too long, you can script ed. It can do arithmetic on line addresses:

#!/bin/sh

# @(#) s2       Demonstrate ed insert.

set -o nounset
echo " sh version: $BASH_VERSION"

cat >data1 <<EOF
one
two
three
four
five
EOF

cat >data2 <<EOF
3.1
3.2
EOF

ed data1 <<EOF
/four/-1
. r data2
w
q
EOF

cat -n data1

# See man ed for details.

exit 0

producing:

% ./s2
 sh version: 2.05b.0(1)-release
24
three
8
32
     1  one
     2  two
     3  three
     4  3.1
     5  3.2
     6  four
     7  five

cheers, drl

[Franklin52]

I think I see what he wants.

Say file1 contains:
aaa
bbb
ccc
ddd
eee

file2 contains:
111
222
333
444
555

If /<pattern>/ is /333/ he wants the result to be:
111
222
aaa
bbb
ccc
ddd
eee
333
444
555

I came up with not one sed command but this:
sed '/333/,$d' file2; cat file1; sed -n '/333/,$p' file2

I know it's a kludge but it works.

This should work too:

sed '/333/{x;p;x;}' file2|sed -e '/^$/r file1' -e '/^$/d'

Regards