string checking


 
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# 1  
Old 07-03-2008
string checking

lets think str is a variable...how can i check it is pure alphabetic or not
for numeric checking i have used echo $str|grep -v [[:alpha:]]
but the command echo $str|grep -v [[:num:]] is not working
# 2  
Old 07-03-2008
Try [[:digit:]].
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