cnglish · June 30, 2019 14:21
diff --git a/tracer.sh b/tracer.sh
 #!/bin/bash


 # all ip of ssh fail login attempts
 lastb | awk '{ print $3 }' | more

 # today, sort, count number
 lastb -i | grep "$(date '+%a %b %d')" | awk '{ print $3 }' | sort | uniq
 # yesterday, sort, count number
 lastb -i | grep "$(date '+%a %b %d' --date="1 day ago")" | awk '{ print $3 }' | sort | uniq

 #
	#!/bin/bash


	# all ip of ssh fail login attempts
	lastb \| awk '{ print $3 }' \| more

	# today, sort, count number
	lastb -i \| grep "$(date '+%a %b %d')" \| awk '{ print $3 }' \| sort \| uniq
	# yesterday, sort, count number
	lastb -i \| grep "$(date '+%a %b %d' --date="1 day ago")" \| awk '{ print $3 }' \| sort \| uniq

	#