case can determine the range of variable belongs to.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | # This script does a very simple test for checking disk space.space=`df -h | awk '{print $5}' | grep % | grep -v Use | sort -n | tail -1 | cut -d "%" -f1 -`case $space in[1-6]*) Message="All is quiet." ;;[7-8]*) Message="Start thinking about cleaning out some stuff. There's a partition that is $space % full." ;;9[1-8]) Message="Better hurry with that new disk... One partition is $space % full." ;;99) Message="I'm drowning here! There's a partition at $space %!" ;;*) Message="I seem to be running with an nonexistent amount of disk space..." ;;esacecho $Message | mail -s "disk report `date`" anny |
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