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#!/bin/sh
# /usr/lib64/sa/sa2
# (C) 1999-2012 Sebastien Godard (sysstat <at> orange.fr)
#
#@(#) sysstat-10.1.5
#@(#) sa2: Write a daily report
#
S_TIME_FORMAT=ISO ; export S_TIME_FORMAT
umask 0022
prefix=/usr
exec_prefix=/usr
# Add a trailing slash so that 'find' can go through this directory if it's a symlink
DDIR=/var/log/sa/
SYSCONFIG_DIR=/etc/sysconfig
YESTERDAY=
DATE=`date ${YESTERDAY} +%d`
CURRENTFILE=sa${DATE}
CURRENTRPT=sar${DATE}
HISTORY=28
COMPRESSAFTER=31
ZIP="bzip2"
[ -r ${SYSCONFIG_DIR}/sysstat ] && . ${SYSCONFIG_DIR}/sysstat
if [ ${HISTORY} -gt 28 ]
then
	CURRENTDIR=`date ${YESTERDAY} +%Y%m`
	cd ${DDIR} || exit 1
	[ -d ${CURRENTDIR} ] || mkdir -p ${CURRENTDIR}
	# Check if ${CURRENTFILE} is the correct file created at ${DATE}
	# Note: using `-ge' instead of `=' since the file could have
	# the next day time stamp because of the file rotating feature of sadc
	[ -f ${CURRENTFILE} ] &&
		[ "`date +%Y%m%d -r ${CURRENTFILE}`" -ge "${CURRENTDIR}${DATE}" ] || exit 0
	# If the file is a regular file, then move it to ${CURRENTDIR}
	[ ! -L ${CURRENTFILE} ] &&
		mv -f ${CURRENTFILE} ${CURRENTDIR}/${CURRENTFILE} &&
			ln -s ${CURRENTDIR}/${CURRENTFILE} ${CURRENTFILE}
	touch ${CURRENTDIR}/${CURRENTRPT}
	# Remove the "compatibility" link and recreate it to point to
	# the (new) current file
	rm -f ${CURRENTRPT}
	ln -s ${CURRENTDIR}/${CURRENTRPT} ${CURRENTRPT}
	CURRENTDIR=${DDIR}/${CURRENTDIR}
else
	CURRENTDIR=${DDIR}
fi
RPT=${CURRENTDIR}/${CURRENTRPT}
ENDIR=/usr/bin
DFILE=${CURRENTDIR}/${CURRENTFILE}
[ -f "$DFILE" ] || exit 0
cd ${ENDIR}
[ -L ${RPT} ] && rm -f ${RPT}
${ENDIR}/sar $* -f ${DFILE} > ${RPT}
find ${DDIR} \( -name 'sar??' -o -name 'sa??' -o -name 'sar??.xz' -o -name 'sa??.xz' -o -name 'sar??.gz' -o -name 'sa??.gz' -o -name 'sar??.bz2' -o -name 'sa??.bz2' \) \
	-mtime +"${HISTORY}" -exec rm -f {} \;
find ${DDIR} \( -name 'sar??' -o -name 'sa??' \) -type f -mtime +"${COMPRESSAFTER}" \
	-exec ${ZIP} {} \; > /dev/null 2>&1
# Remove broken links
for f in `find ${DDIR} \( -name 'sar??' -o -name 'sa??' \) -type l`; do
	[ -e $f ] || rm -f $f
done
cd ${DDIR}
rmdir [0-9]????? > /dev/null 2>&1
exit 0