Shell Programming and Scripting

foreach($line of $file)
  find $line -mtime +$days -exec r -f{}\; > errors.txt
x=(wc -l < errors.txt)
if(x>0)
  mail -s "errors" someone@email.com < errors.txt
fi

#!/bin/sh
file=directories.txt
days=100
while read line; do
    find $line -mtime +$days -exec r -f {} \; > errors.txt
    test -s errors.txt  &&  mail -s "errors" someone@email.com < errors.txt
done < $file

if(x>0)
  mail -s "errors" someone@email.com < errors.txt
fi

if [ $x>0 ]; then  mail -s "errors" someone@email.com < errors.txt;fi

#!/bin/ksh
# or bash
# cleanscript
# arg1 = file, arg2= days

[ $# != 2 ] && echo "usage:$0 dirlistfile days" >&2  && exit 1

file="$1"
days="$2"
cat "$file" | while read line 
do
  find $line -mtime +$days -exec rm -f  {} \; 2> errors.txt
  # do cmd and put stdout to the var
  x=$( wc -l < errors.txt )
  # numeric testing builtin
  if  ((  x>0  ))
  # or using test or [  builtin command
  # if [ "$x" -gt 0 ]
  then
         mail -s "errors" someone@email.com < errors.txt
  fi
done

chmod a+rx cleanscript
./cleanscript dirlistfile  7