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please try this,

I have saved the given sample output in file /tmp/test.txt.

 xargs -n 2 | sed 's/^/Hostname1 /g' 

• -n means maximum arguments per line.

For example;

cat /tmp/test.txt  | xargs -n 2 | sed 's/^/Hostname1 /g' 
Hostname1 rrcpd 17
Hostname1 rrcpd 0
Hostname1 Cheese 3
Hostname1 cakes 8
Hostname1 Cats 9
Hostname1 dogs 3

please try this,

I have saved the given sample output in file /tmp/test.txt.

 xargs -n 2 | sed 's/^/Hostname1 /' 

• -n means maximum arguments per line.

For example;

cat /tmp/test.txt  | xargs -n 2 | sed 's/^/Hostname1 /g' 
Hostname1 rrcpd 17
Hostname1 rrcpd 0
Hostname1 Cheese 3
Hostname1 cakes 8
Hostname1 Cats 9
Hostname1 dogs 3

please try this,

I have saved the given sample output in file /tmp/test.txt.

 xargs -n 2 | sed 's/^/Hostname1 /g' 

For example;

cat /tmp/test.txt  | xargs -n 2 | sed 's/^/Hostname1 /g' 
Hostname1 rrcpd 17
Hostname1 rrcpd 0
Hostname1 Cheese 3
Hostname1 cakes 8
Hostname1 Cats 9
Hostname1 dogs 3

please try this,

I have saved the given sample output in file /tmp/test.txt.

 xargs -n 2 | sed 's/^/Hostname1 /g' 

• -n means maximum arguments per line.

For example;

cat /tmp/test.txt  | xargs -n 2 | sed 's/^/Hostname1 /g' 
Hostname1 rrcpd 17
Hostname1 rrcpd 0
Hostname1 Cheese 3
Hostname1 cakes 8
Hostname1 Cats 9
Hostname1 dogs 3

please try this,

sed 's/rrcpd/\nHostname1 rrcpd/g'

For example;

echo "rrcpd 17 rrcpd 0" | sed 's/rrcpd/\nHostname1 rrcpd/g'
 
Hostname1 rrcpd 17 
Hostname1 rrcpd 0

please try this,

I have saved the given sample output in file /tmp/test.txt.

 xargs -n 2 | sed 's/^/Hostname1 /g' 

For example;

cat /tmp/test.txt  | xargs -n 2 | sed 's/^/Hostname1 /g' 
Hostname1 rrcpd 17
Hostname1 rrcpd 0
Hostname1 Cheese 3
Hostname1 cakes 8
Hostname1 Cats 9
Hostname1 dogs 3