UNIX for Dummies Questions & Answers

 
find some_logfile -type f -size +20000

for each in `find dir -type f -size +20000`
do
mv $each ${each}.new
done

 
cp: cannot access find
cp: illegal option -- t
cp: illegal option -- y
cp: illegal option -- e
cp: illegal option -- t
cp: illegal option -- y
cp: illegal option -- e
cp: illegal option -- .
cp: illegal option -- n
cp: illegal option -- e
cp: illegal option -- w
cp: Insufficient arguments (0)
Usage: cp [-f] [-i] [-p] [-@] f1 f2
       cp [-f] [-i] [-p] [-@] f1 ... fn d1
       cp -r|R [-f] [-i] [-p] [-@] d1 ... dn-1 dn
cp: cannot access f
cp: illegal option -- s
cp: illegal option -- z
cp: illegal option -- e
cp: illegal option -- s
cp: illegal option -- z
cp: illegal option -- e
cp: illegal option -- .
cp: illegal option -- n
cp: illegal option -- e
cp: illegal option -- w
cp: Insufficient arguments (0)
Usage: cp [-f] [-i] [-p] [-@] f1 f2
       cp [-f] [-i] [-p] [-@] f1 ... fn d1
       cp -r|R [-f] [-i] [-p] [-@] d1 ... dn-1 dn
cp: cannot access +20000

filename="some_logfile"
MB="`echo '1024 * 1024'|bc`"    # One megabyte in bytes
#
# If the file exists, find out how big it is in bytes
if [ -f "${filename}" ]
then
        filesize=`ls -lad "${filename}" | awk '{print $5}'`
else
        echo "File missing: ${filename}"
        exit 1
fi
#
# Compare the size of the file with the maximum and rename the file if it is too big
if [ ${filesize} -gt ${MB} ]
then
        echo "Renaming ${filename} ${filename}.old"
        mv "${filename}" "${filename}.old"
fi

 find . -iname "test_log" -size +1M -exec mv {} test_log_mbs \;