Runs every day and checks if disk space is less than 5 GB, then deletes some files until free space is bigger than 5 GB
#!/bin/sh
# set -x
# Shell script to monitor or watch the disk space
cd /home/camera/FI9831P_00626E654229/record
free=`df -k --output=avail "$PWD" | tail -n1`
treshold=5000000 #5GB Free space needed
if [ $free -lt $treshold ]; then
echo "less than 10GBs free! Cleaning some files"
while [ $free -lt $treshold ]
do
oldest_file="$(ls -lt | grep -v '^d' | tail -1 | awk '{print $NF}')"
file_size=`stat --printf="%s" $oldest_file`
echo Removing $oldest_file with size $file_size bytes.
rm $oldest_file
# sleep 1
free=`df -k --output=avail "$PWD" | tail -n1`
echo Used space after removal $free
done
else
echo $free are in available
fi;