لینوکس

#!/bin/bash
# Make a backup set of files
for value in $1/*
do
used=$( df $1 | tail -1 | awk '{ print $5 }' | sed 's/%//' )
if [ $used -gt 90 ]
then
echo Low disk space 1>&2
break
fi
cp $value $1/backup/
done

#!/bin/bash
# Make a backup set of files
for value in $1/*
do
if [ ! -r $value ]
then
echo $value not readable 1>&2
continue
fi
cp $value $1/backup/
done