Error in bash script, what's wrong?

Question

bash

#!/bin/bash
mask="/var/log/WARNING*"
logfile="tmp/error.log"
rm $logfile

for file in $(ls -l $mask)
do
 while read line
 do
  echo $line >> $logfile
 done < $file
 echo $line >> $logfile
done

grep -E -h -s "/[a-z]{2,}/\S+" $logfile

exit 1

Errors appear:
rm: cannot remove 'tmp/error.log': No such file or directory
ls: cannot access '/var/log/WARNING*': No such file or directory
but the files are there

Answer 1

rm: cannot remove 'tmp/error.log': No such file or directory

for file in $(ls -l $mask)
do
 while read line
 do
  echo $line >> $logfile
 done < $file
 echo $line >> $logfile
done

Sorry, but why move files line by line when you can do this:

find -name "$mask" -type f -print0 | xargs -0 cat >> $logfile

Answer 2

maybe
?