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-
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top20du.sh
<![CDATA[
#!/bin/ksh
#
# Directory analyzer (for 10.20 and higher, uses du -k capability)
#
# Usage:
#
# top20du [ <directory> [ <directories> ....] ]
#
# default is to use the current working directory.
#
# Go through each directory specified
#
set -u
MYOS=`uname`
MYREV=`uname -r | cut -f 2-3 -d .`
case $MYOS in
HP-UX)
if [ $MYREV -lt "10.00" ]
then
MYPATH=/bin
MYDU=/bin
TEMPDIR=/usr/tmp/Top20du
else
MYPATH=/usr/bin
MYDU=/usr/bin
TEMPDIR=/var/tmp/Top20du
fi
;;
SunOS)
MYPATH=/usr/bin
MYDU=/usr/xpg4/bin
TEMPDIR=/var/tmp/Top20du
;;
*)
MYPATH=/usr/bin
MYDU=/usr/bin
TEMPDIR=/var/tmp/Top20du
;;
esac
$MYPATH/rm -rf $TEMPDIR
$MYPATH/mkdir $TEMPDIR
trap "$MYPATH/rm -rf $TEMPDIR" 0 1 2 3 15
# Establish a starting directory even if omitted
if [ $# -lt 1 ]
then
STARTDIR=$($MYPATH/pwd)
else
STARTDIR="$@"
fi
# Expand to a full path name from any relative expression
# But first, use a redirection of std error to the LSERROR
# file. This solves a problem in assigning STDERR from ls
# to a simple variable.
LSERRORS=$TEMPDIR/lserrors
for DIRSPEC in $STARTDIR
do
$MYPATH/ls $DIRSPEC 1> /dev/null 2> $LSERRORS
if [ -s $LSERRORS ]
then
echo
echo "$DIRSPEC: $($MYPATH/cat $LSERRORS)"
elif [ ! -d $DIRSPEC ]
then
echo
echo "$DIRSPEC is not a directory"
echo
else
DIRSPEC=$(cd $DIRSPEC;$MYPATH/pwd)
echo
echo "Summary of $DIRSPEC (in K-bytes, top 20):"
# Tricky code: du -k (show in kbytes, not blocks) was introduced
# at 11.0 and undocumented at 10.20 but not available prior to 10.20.
#
# For maximum portability, this code parses out the directory SIZE
# and performs the math for Kbytes, then typesets the SIZE in right
# justified output. The quotes " " maintain leading spaces in echo.
#
# For really pretty output, this code switches from Gb to Mb to Kb
# for units of measure depending on the size of the directory.
PREVUNITS="none"
$MYDU/du -x $DIRSPEC | sort -rn | head -20 | while read SIZE DIR
do
if [ $SIZE -gt 1999.9 ]
then
if [ $SIZE -gt 1999999.9 ]
then
RSIZE=$(echo "scale=1 \n $SIZE/2000000.0" | bc)
UNITS=Gb
if [ $PREVUNITS != $UNITS ]
then
echo
PREVUNITS=$UNITS
fi
else
RSIZE=$(echo "scale=1 \n $SIZE/2000.0" | bc)
UNITS=Mb
if [ $PREVUNITS != $UNITS ]
then
echo
PREVUNITS=$UNITS
fi
fi
else
RSIZE=$(echo "scale=1 \n $SIZE/2.0" | bc)
UNITS=Kb
if [ $PREVUNITS != $UNITS ]
then
echo
PREVUNITS=$UNITS
fi
fi
printf "%6.1f %s %s\n" $RSIZE $UNITS $DIR
done
fi
done
$MYPATH/rm -rf $TEMPDIR
#### END OF SCRIPT
]]>
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