Emergency UNIX and Linux Support

dd if=/dev/zero of=file_2GB bs=2048000 count=2000

threshold=80
FStoFill=/tmp
set -- $(df -k $FStoFill | tail -1)
dd if=/dev/zero of=$FStoFill/zerofile.$$ bs=1k count=$((($threshold*$2/100)-$3))

dd if=/dev/null of=dummy seek=37580963840 bs=1

#!/bin/ksh
threshold=20
FStoFill=/tmp
set -- $(df -k $FStoFill | tail -1)
dd if=/dev/zero of=$FStoFill/zerofile.$$ bs=1 count=$((($threshold*$2/100)-$3))

df -k yourfilesystem | tail -1

threshold=70
FStoFill=/tmp
set -- $(df -k $FStoFill | tail -1 | awk '{$1=$1;print $(NF-4),$(NF-3)}')
dd if=/dev/zero of=$FStoFill/dummy bs=1K count=$((($threshold*$1/100)-$2-1064))

 df -k /tmp | tail -1
/dev/hd3          5767168   5557264    4%      811     1% /tmp

count=$((($threshold*$1/100)-$2-1064))

set -- $(df -k $FStoFill | tail -1 | awk '{$1=$1;print $(NF-5),$(NF-5)-$(NF-4)}')
dd if=/dev/zero of=$FStoFill/dummy bs=1K count=$((($threshold*$1/100)-$2-1064))