81 lines
2.1 KiB
Bash
Executable File
81 lines
2.1 KiB
Bash
Executable File
#!/usr/bin/ksh
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#
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# SCRIPT: linux_swap_mon.ksh
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#
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# AUTHOR: Randy Michael
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# DATE: 5/31/2007
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# REV: 1.1.P
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#
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# PLATFORM: Linux Only
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#
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#
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# PURPOSE: This shell script is used to produce a report of
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# the system's paging space statistics including:
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#
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# Total paging space in MB, MB of Free paging space,
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# MB of Used paging space, % of paging space Used, and
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# % of paging space Free
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#
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# REV LIST:
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#
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#
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# set -x # Uncomment to debug this shell script
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# set -n # Uncomment to check command syntax without any execution
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#
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###########################################################
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################ DEFINE VARIABLES HERE ####################
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THISHOST=$(hostname) # Host name of this machine
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PC_LIMIT=65 # Upper limit of Swap space percentage
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# before notification
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###########################################################
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################ INITIALIZE THE REPORT ####################
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echo "\nSwap Space Report for $THISHOST\n"
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date
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###########################################################
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############# CAPTURE AND PROCESS THE DATA ################
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free -m | grep -i swap | while read junk SW_TOTAL SW_USED SW_FREE
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do
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# Use the bc utility in a here document to calculate
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# the percentage of free and used swap space.
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PERCENT_USED=$(bc <<EOF
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scale=4
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($SW_USED / $SW_TOTAL) * 100
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EOF
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)
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PERCENT_FREE=$(bc <<EOF
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scale=4
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($SW_FREE / $SW_TOTAL) * 100
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EOF
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)
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# Produce the rest of the paging space report:
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echo "\nTotal Amount of Swap Space:\t${SW_TOTAL}MB"
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echo "Total KB of Swap Space Used:\t${SW_USED}MB"
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echo "Total KB of Swap Space Free:\t${SW_FREE}MB"
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echo "\nPercent of Swap Space Used:\t${PERCENT_USED}%"
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echo "\nPercent of Swap Space Free:\t${PERCENT_FREE}%"
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# Grap the integer portion of the percent used to
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# test for the over limit threshold
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INT_PERCENT_USED=$(echo $PERCENT_USED | cut -d. -f1)
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if (( PC_LIMIT <= INT_PERCENT_USED ))
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then
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tput smso
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echo "\n\nWARNING: Paging Space has Exceeded the ${PC_LIMIT}% Upper Limit!\n"
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tput rmso
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fi
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done
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echo "\n"
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