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Shell Programming and Scripting

get only two letter from any string

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# 1  
Old 01-18-2008
get only two letter from any string
I want get middle two latter of any string.

Input:
var="070108"

output:

var1="01"

please help.
# 2  
Old 01-18-2008
Using sed, assuming it contains 6 numbers,

Quote:
echo $var |sed 's/\([0-9]\{2\}\)\([0-9]\{2\}\)\([0-9]\{2\}\)/\2/'
using bash,

Quote:
echo ${var:2:2}
# 3  
Old 01-18-2008
[zsh]

Code:
% v=070108
% print $v[$#v/2,$#v/2+1]
01
% v=abcd
% print $v[$#v/2,$#v/2+1]
bc
% v=12345678910
% print $v[$#v/2,$#v/2+1]
56

[bash]

Code:
echo ${v:(${#v}/2)-1:2}

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