UNIX for Dummies Questions & Answers

Does anyone have a script to check disk space usage.
My backup directory keeps filling up with archivelog files and
I need a script to let me know by email or pager when the filesystem is 80% full.


Thank you!

If yo don't want to use percentage because you have large
filesystems. Correct and modify the following pseudo_coded_ksh:

#!/bin/ksh
#begin_of_MP_use.sh
fecha=`date +"%Y%m%d"`
LOG2=/tmp/"$fecha".txt
tty 1>/dev/null 2>&1
cod_ret=$?
if [ $cod_ret -eq 1 ]
then
VERBOSE="No"
fi

if [ "$VERBOSE" = "Yes" ]
then
set -x
TTY=`tty`
else
TTY=/dev/null
fi
dia=`date +"%Y%m%d"`
HOME=/usr/local/scripts/
LOG=$HOME/logs/"$dia"/"$fecha"_chequeo_MP.txt

if [ ! -d $HOME/logs/"$dia" ]
then
mkdir $HOME/logs/"$dia"
cod_ret=$?
if [ $cod_ret -ne 0 ]
then
LOG=$LOG2
echo "$fecha ERROR $cod_ret when creating $HOME/logs/$dia directory" |tee -a $LOG 1>>$TTY 2>&1
else
chmod 0750 $HOME/logs/"$dia"
cod_ret=$?
if [ $cod_ret -ne 0 ]
then
echo "$fecha ERROR $cod_ret when doing chmod 0750 $HOME/logs/$dia" |tee -a $LOG 1>>$TTY 2>&1
fi
fi
fi

function gen_std_DF {
case $1 in
AIX)
df -kMv /temp |awk '{print $1,$2,$5,$8}' |grep -v "Filesystem" > /tmp/my_df.txt
;;
SunOS)
df -F uMP -o i |awk '/\// {print $3 }' > /tmp/df_i.txt
df -l -F uMP -k |awk '/\//{print $1, $6, $4}' | paste - /tmp/df_i.txt > /tmp/my_df.txt
;;
Linux)
df -x iso9660 -x vfat -x proc -x devpts -i |awk '/\// {print $2}' > /tmp/df_i.txt
df -x iso9660 -x vfat -x proc -x devpts -k |awk '/\//{print $1,$6,$4}' |paste - /tmp/df_i.txt > /tmp/my_df.txt
;;
HP-UX)
bdf -il |awk '/\//{print $1, $9, $4, $6}' > /tmp/my_df.txt
;;
}


function notify_this {
case "$1" in
major) /usr/lpp/OV/OpC/opcmsg severity=$1 app=$2 obj=$3 msg_grp=$4 \
msg_text="$5";;
# opcmsg: HP Vantage Point Operations API
# PATH for AIX
# use the API for Tivoli or whatever
# replace with your emergency notification method

warning) uuencode /tmp/my_df.txt my_df.txt | mail -s "$5" <your_mail_account@your_domain> ;;

esac
}



# body of script

HOST=<hostname>
OS=`uname`
gen_std_DF "$OS"


cat /usr/local/scripts/varios/reportes/uso_MP/umbrales_"$servidor".txt |while read raw_dev SpaUmbMaj SpaUmbWar MP InoUmbMaj InoUmbWar
do

Free_Inodes=`cat /tmp/my_df.txt |grep -w $raw_dev |awk '{print $4'}`
if [ $Free_Inodes -ge $InoUmbWar ]
then
if [ $Free_Inodes -ge $InoUmbMaj ]
then
notify_this major df df OS "Free Inodes: $Free_Inodes $MP "
else
notify_this warning df df OS "Free Inodes: $Free_Inodes $MP "
fi
fi

FREE_SPACE=`cat /usr/local/scripts/varios/reportes/uso_MP/my_df.txt |grep -w $raw_dev |awk '{print $3}'|tail -1`
if [ $FREE_SPACE -lt $SpaUmbWar ]
then
if [ $FREE_SPACE -le $SpaUmbMaj ]
then
notify_this major df df OS "MR: Filesystem $MP $FREE_SPACE Kb libres"
else
notify_this warning df df OS "MR: Filesystem $MP $FREE_SPACE Kb libres"
fi
fi

done

exit 0

#end_of_MP_use.sh


# Example of umbrella_file for AIX
# Logical_Volume space_alarm_umb space_warning_umb Mount_point i-node_alarm_umb i-node_warning_umb
/dev/hd4 100000 200000 / 250 2500
/dev/hd2 1000 10000 /usr 2500 10000
/dev/hd9var 1200000 1500000 /var 3000 15000
/dev/hd3 5000 20000 /tmp 500 5000
/dev/hd1 5000 20000 /home 800 3600
/dev/mwa_raw_dev 5000 30000 /var/opt/perf 100 1000
/dev/ov_raw_dev 5000 30000 /var/lpp/OV 100 1000
/dev/recman_raw_dev 20000 50000 /rman 50 1000
/dev/oracle_raw_dev 20000 40000 /usr/lpp/oracle8i 100 1000
/dev/archiving_raw_dev 50000 100000 /usr/lpp/oracle8i/admin/<instance_name>/arch 90 9000
/dev/oraclebin_raw_dev 400000 200000 /usr/lpp/oracle8i/product/8.1.6 100 2000
/dev/backuprman_raw_dev 2000000 5000000 /home/backup 1000 10000
# end_of Example of umbrella_file for AIX

For the others OS Replace the Logical Volume with
partition_name, meta_device_name.
Examples:

HP-UX /dev/vg15/al_abd_p
Linux Redhat: /dev/sda1, /dev/md3
SunOs: /dev/dsk/c0t0d0s6


Good Luck. Hugo.