Linux bash - Input format

Question

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.

Amadan · Accepted Answer · 2013-01-07 09:17:00Z

4

servernumber=`printf %02d $servernumber`

answered Jan 7, 2013 at 9:17

Amadan

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1 Comment

chepner Over a year ago

Assuming you are using bash 4 or later: printf -v servernumber "%02d" "$servernumber".

Fritz G. Mehner · Accepted Answer · 2013-01-07 12:29:53Z

1

Bash only, no other processes:

servernumber=0$servernumber         # add leading 0
servernumber=${servernumber: -2}    # take last 2 characters

answered Jan 7, 2013 at 12:29

Fritz G. Mehner

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Comments

Vijay · Accepted Answer · 2013-01-07 09:20:28Z

0

write an if condition for checking the value of

echo $servernumber | nawk '/0/{print NR}' == 1

answered Jan 7, 2013 at 9:20

Vijay

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