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How to check a particular element in a string variable

 
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# 1  
Old 02-12-2009
How to check a particular element in a string variable
Hi,
I have a string variable containing value say
abc123
I want to check if the 3rd element of this string is "c"
in a if statement.Actually i dont know the syntax of how to use substring
in an if statement in shell script.
Please reply soon.
Regards
Navjot
# 2  
Old 02-12-2009
If your using bash check "${parameter:offset:length}" in the man page.
# 3  
Old 02-12-2009
Quote:
Originally Posted by frank_rizzo
If your using bash check "${parameterSmilieffset:length}" in the man page.
Hi,
Im using HP-UX ,i guess that doesn't uses bash.Smilie
# 4  
Old 02-13-2009
Quote:
Originally Posted by navjotsingh
Hi,
Im using HP-UX ,i guess that doesn't uses bash.Smilie
Hi Navjot,

I am also new to unix Smilie. But i have tried to this code and its working fine for checking the 3rd character of string to be 'c' :

Code:
i=`echo "abc123" | cut -c3`
echo $i
 
if [ "$i" == "c" ]
then
        statement
fi

if u r checking the strings in particular file then just give cut command.

Guru's plz correct me if I am wrong.
 
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