39 lines
1.2 KiB
Bash
39 lines
1.2 KiB
Bash
#!/bin/sh
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#
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# Monitor file $1 for changes
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# Send an alert email to $2 if file $1 changes
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# usage: filewatcher {file_to_watch} {your_email_address}
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#
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if [ -z "$2" ]; then
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echo "Usage: filewatcher {file_to_watch} {your_email_address}"
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exit 1
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fi
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#if a inotifywait for this file is already running
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if [ $(ps aux | grep inotifywait | grep -c "$1" ) -gt '0' ]; then
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echo "A process monitoring the file $1 is already running: $(ps aux | grep inotifywait | grep "$1" )";
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exit 1;
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fi
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#if inotifywait exists
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type -P inotifywait &>/dev/null || { echo "Error: This script requires inotifywait(http://wiki.github.com/rvoicilas/inotify-tools/) .... apt-get install inotify-tools ... " >&2; exit 1; }
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#if the file exists
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# if [ -f $1 ]; then
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echo "Monitoring file $1 for changes - sending alerts to $2"
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while inotifywait -e modify -e attrib -e move -e delete $1 -o /opt/filewatcher/audit.log; do
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sleep 1
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changes="$(tail -1 $1)"
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#changes="$(cat /opt/filewatcher/audit.log)"
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echo "The following change occurred in the file $1 : $changes" | mail -s "Change in $1" $2
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rm /opt/filewatcher/audit.log
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touch /opt/filewatcher/audit.log
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done
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else
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echo "Error: File $1 not found"
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