doesn't work the bash script to check given single character is in lower case or uppercase

Asked Aug 13 '16 at 09:29

Active Aug 13 '16 at 10:39

Viewed 60 times

I write below shell script to check whether given character is in uppercase or lowercase..

read d
case $d in
[a-z]) echo "Character is in Lowercase";;
[A-Z]) echo "Character is in Uppercase";;
esac

But when I enter any case in Uppercase it displays the output "charecter is in Lowercase" I just want to create simple script with basic programming. Is there any solution??

edited Aug 13 '16 at 09:42

Anthon

79,293

asked Aug 13 '16 at 09:29

Dip

please format your question: http://unix.stackexchange.com/editing-help – Sundeep Aug 13 '16 at 09:33
1

The script, as it stands now, works for me. – Kusalananda Aug 13 '16 at 09:45
1

What do you mean by "when I enter any case in Uppercase"? – Kusalananda Aug 13 '16 at 09:58
1

Iteresting. I always get lowercase in bash, but it works in dash, ksh, and zsh. – Petr Skocik Aug 13 '16 at 10:03
Correction : When i enter any uppercase letter as an input then also it gives output "Character is in Lowercase" – Dip Aug 13 '16 at 10:09
7

Isn't it a matter of collation order? See for example Why does [A-Z] match lowercase letters in bash? – steeldriver Aug 13 '16 at 10:29
on bash, Z gives uppercase and all other gives lowercase... if you interchange the two statements, a gives lowercase and every other letter gives uppercase.. I think it may be because case does pattern matching and not regex matching – Sundeep Aug 13 '16 at 10:33
1

See steeldriver's link. Insert as second line: LC_COLLATE=C – Cyrus Aug 13 '16 at 11:10

doesn't work the bash script to check given single character is in lower case or uppercase

0 Answers0