Hi Guys,

Need help with modifying the file using shell script.I have file as :

------------
Hostname1
------------
process1
process2
process3
------------
Hostname2
------------
process4
prcoess5
prcoess6
prcoess7
------------ and so on.

I need some syntax which I can use to update the file as :
Hostname1 process1
Hostname1 process2
Hostname1 process3
Hostname2 process4
Hostname2 process5
Hostname2 process6
Hostname2 process7

Now able to think , how can I start for this, please help. Thanks

You can start by writing down the steps you would use to perform the process manually

Hi.

Here is how it may be done in sed:
First part of the "program" '/^-+$/{n;h;n;b;};' reads as follows: "if a line of dashes (/^-+$/) encountered, then read next line (n), save it in hold space (h), read next line and jump to end of the program (that is skip all other commands and start processing next line)". In other words we extract and save corresponding Hostname* here. For other lines we append hold space to pattern space (G), which gives us almost what we want, e.g. 'process1\nHostname1'. Now we need to swap strings on both sides of newline (\n) and remove newline (and print the result). The substitute (s) command 's/(.*)\n(.*)/\2 \1/p' does exactly that -- \1 corresponds to a string before newline and \2 -- to a string after newline.

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With this InFile ...
... this awk ...
... produced this OutFile ...
Daniel B. Martin