Check if lower case?

[Sean OB_1]

Can anyone show me a way to check if a filename has any lower case characters in it?

I need to check before trying to uppercase the name from within a script.

TIA and points for all responses.

Sean

[Fred Ruffet · Accepted solution]

In Shell :

/>Filename1=MYFILE
/>Filename2=MyFile
/>if [ $Filename1 = $(echo $Filename1 | tr "[a-z]" "[A-Z]") ]
> then echo no lowercase
> else echo lowercase
> fi
no lowercase
/>if [ $Filename2 = $(echo $Filename2 | tr "[a-z]" "[A-Z]") ]
> then echo no lowercase
> else echo lowercase
> fi
lowercase

Regards,

Fred

[Muthukumar_5]

We can detect using regex pattern class of [[:lower:]]

A file name as TeST

echo TeST | grep "[[:lower:]]
or
echo TeST | grep -q "[[:lower:]]"
if [[ $? -eq 0 ]]; then
echo "it contains lower character"

we can rename a file as,

echo "mv TeST `echo Test | tr -s '[:lower:]' '[:upper:]'`" | sh

using tr command.

where TeST file changed to TEST

[Stefan Schulz]

Hi Sean,

i would use tr and compare two variables.

if [ $filename = $(echo $filename | tr '[:lower:]' '[:upper:]') ]
then
else
fi

Just a quick shot. Perhaps its worth a try.

Regards Stefan

[Fred Ruffet]

in perl :

/>perl
while () {
print "lowercase\n" if $_=~ m/[a-z]/;
}
MYFILE
MyFile
lowercase

Regards,

Fred

[A. Clay Stephenson]

#!/usr/bin/sh

FNAMES="Boo cow MOM DAD You"

for FNAME=${FNAMES}
do
echo "${FNAME}" | grep -q -E '.*[a-z].*'
STAT=${?}
if [[ ${STAT} -eq 0 ]]
then
echo "Lowercase found"
fi
done

[Rodney Hills]

A simple way (within ksh)-

filename="ABcdEF"
typeset -u x=$filename
if [[ $filename != $x ]] ; then
echo "FILE HAS LOWERCASE IN IT!!"
fi

HTH

-- Rod Hills