Shell Programming and Scripting

#!/bin/sh
spaceused()
{
 du -d 0 "${1}" | awk -F"[ \t]+" '{ print $1 }
}

#!/bin/sh
spaceused()
{
  du -h -d 0 "${1}" | awk -F"[ \t]+" '{ print $1 }
}

USED=$(spaceused /the/directory)
echo "Blocks used: ${USED}"

du -h -d 0 "${1}" | awk -F"[ \t]+" '{ print $1 }'

du -h -d 0 "${1}" | awk -F"[ \t]+" '{ print $1 }'

du -s "${1}" | cut -f1

sh SpaceUsed.sh

30	4	*	*	*	root	sh /location/SpaceUsed.sh

From Command line
 Space used: 912924
From crontab
 Space used: 1825848

#!/bin/sh

#set -x

TARGET="/path"
LOGNAME="test.log"

SpaceUsed()
{
  # for demo simplicity
  du -s "${1}" | cut -f1
#  echo $(($(du -s "${1}" | cut -f1) * 1024)) | sed -e :x -e 's/\([0-9][0-9]*\)\([0-9][0-9][0-9]\)/\1,\2/' -e 'tx'
}

echo " Space used: $(SpaceUsed ${TARGET})" >> ${TARGET}/${LOGNAME}
exit 0