dv

#!/bin/sh
#
# dv - print out online volumes, showing available/total space (in K)
# Syntax: dv [<volser>]*
# If no volser specified, all volumes printed
#
# Output Format:
#  <volser> <available>/<total>
#set -x
MY_DIR=$(cd `dirname $0`; echo $PWD)

volfunc="${MY_DIR}/volfunc"
if ! [ -f "${volfunc}" ]; then
	echo "Unable to source volfunc" >&2
	exit 16
fi

cd ${MY_DIR} && . "${volfunc}" >/dev/null && cd $OLDPWD

if [ "$1" = "-?" ] || [ "$1" = "-h" ]; then
	echo "Syntax:" >&2
	echo "  $0 [<volser>]*" >&2
	echo "where:" >&2
	echo "  <volser> : volume serial number to dislay information about" >&2
	echo "  If no <volser> specified, display all volumes" >&2 
	echo "Output format:" >&2
	echo "<volser> <free space> <allocated space> <device number>" >&2
	exit 16
fi

if [ $# -gt 0 ]; then
	volsers=$(echo $* | tr '[:lower:]' '[:upper:]')
	volsers=" ${volsers} "
else
	volsers=""
fi

tmp=$(mvstmp `hlq`)
drm -f ${tmp}
dtouch -tseq -rvb -l255 ${tmp}
rawvolout=`echo ' DCOLLECT NOD OFILE(ODS) VOLUMES(*)' | mvscmdauth --pgm=IDCAMS --ods=${tmp} --sysprint=* --sysin=stdin`
if [ $? -gt 4 ]; then
	echo "${rawvolout}" >&2
fi

lines=`${MY_DIR}/volinfo "//'${tmp}'"`
rc=$?
if [ $rc -gt 0 ]; then
	exit $rc
fi
drm -f ${tmp}
if [ "${volsers}" = "" ]; then
	echo "${lines}"
	exit 0
fi

#
# Only print out volumes that match list given
#
echo "${lines}" | while IFS= read -r line; do
	volser=${line%%\ *}
	check=${volsers%%\ ${volser}\ *} 
	if [ "${check}" != "${volsers}" ]; then
		echo "${line}"
	fi
done
exit 0