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You can use like -

String="$a $b $c"

where a="aaa"
b="bbb"
c="ccc"

For deleting first n number of chars, instead of writing 'n' dots(.), following pattern can be used -

^.\{n\}
so the sed can be changed to

cat testA |sed 's/^.\{n\}//' > testB

If i got ur problem correctly, u want to create a separate TCP connection with vendor's server for each of ur daemon's client.
This can be done very well by changing the port no. for each...

I have a diskless work station.
i want to boot from a remote linux machine.
what changes i will have to do in configuration.
Plz tell me
thanks