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Linux bash - Input format

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linux-howto

http://stackoverflow.com – I have this standard input: read -p "Server-Number: " servernumber The Server numbers goes from 01 - 99 It is important, that the number has a zero (01, 02, 03, ..., 10, 11, ..., 99) How can I edit the variable, if the number is only 1 instead of 01 ? Sorry for my bad english ;) I hope your understand my question. (HowTos)