Script improvement
in [Shell]
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From: Ciccio on 3 Nov 2009 11:33 Hi List, Given the output below, $ netstat -an | grep TIME_WAIT 10.159.244.250.80 10.159.244.250.49198 49152 0 49152 0 TIME_WAIT 10.159.244.250.49199 10.159.244.250.1984 51148 0 49152 0 TIME_WAIT 10.159.244.250.49200 10.159.244.250.1984 49944 0 49152 0 TIME_WAIT 10.159.244.250.49167 10.159.244.250.1984 50485 0 49152 0 TIME_WAIT 10.159.244.250.49168 10.159.244.250.1984 50363 0 49152 0 TIME_WAIT 10.159.244.250.49169 10.159.244.250.1984 49247 0 49152 0 TIME_WAIT 10.159.244.250.49170 10.159.244.250.1984 49247 0 49152 0 TIME_WAIT 10.159.244.250.49171 10.159.244.250.1984 49249 0 49152 0 TIME_WAIT 10.159.244.250.49172 10.159.244.250.1984 49247 0 49152 0 TIME_WAIT 10.159.244.250.49173 10.159.244.250.1984 49245 0 49152 0 TIME_WAIT 10.159.244.250.49174 10.159.244.250.1984 49251 0 49152 0 TIME_WAIT 10.159.244.250.49175 10.159.244.250.1984 49663 0 49152 0 TIME_WAIT 10.159.244.250.49176 10.159.244.250.1984 51201 0 49152 0 TIME_WAIT 10.159.244.250.49177 10.159.244.250.1984 49495 0 49152 0 TIME_WAIT 10.159.244.250.49181 10.159.244.250.22 49152 0 49152 0 TIME_WAIT 10.159.244.250.49185 10.159.244.50.22 49640 0 49640 0 TIME_WAIT 10.159.244.250.49186 10.159.244.46.22 49640 0 49640 0 TIME_WAIT 10.159.244.250.49187 10.159.244.135.22 49640 0 49640 0 TIME_WAIT 10.159.244.250.49188 10.159.244.250.1984 52081 0 49152 0 TIME_WAIT 10.159.244.250.49194 10.159.244.250.1984 49541 0 49152 0 TIME_WAIT 10.159.244.250.49195 10.159.244.250.1984 49553 0 49152 0 TIME_WAIT I need to obtain these 4 variables ($LOCALIP $LOCALPORT $REMOTEIP $REMOTEPORT) to pass to tcpdrop. Here is what I came up with - and it works, but is there a better/ faster/neater way of doing it? Cheers Ciccio #!/bin/bash /usr/bin/netstat -an | grep TIME_WAIT > time.wait.file while read line do LOCAL=`echo $line | awk '{print $1}'` LOCALIP=`echo $LOCAL | cut -d "." -f 1-4` LOCALPORT=`echo $LOCAL | cut -d "." -f 5` REMOTE=`echo $line | awk '{print $2}'` REMOTEIP=`echo $REMOTE | cut -d "." -f 1-4` REMOTEPORT=`echo $REMOTE | cut -d "." -f 5` /usr/local/bin/tcpdrop $LOCALIP $LOCALPORT $REMOTEIP $REMOTEPORT done < time.wait.file
From: pk on 3 Nov 2009 11:56 Ciccio wrote: > Hi List, > > Given the output below, > > $ netstat -an | grep TIME_WAIT > 10.159.244.250.80 10.159.244.250.49198 49152 0 49152 0 > TIME_WAIT Try eval $(netstat -an | awk -F '\.| +' -v OFS=. '/TIME_WAIT/{ print "LOCALIP="$1,$2,$3,$4 print "LOCALPORT="$5 print "REMOTEIP="$6,$7,$8,$9 print "REMOTEPORT="$10 }')
From: Ciccio on 3 Nov 2009 12:06 On Nov 3, 4:56 pm, pk <p...(a)pk.invalid> wrote: > Ciccio wrote: > > Hi List, > > > Given the output below, > > > $ netstat -an | grep TIME_WAIT > > 10.159.244.250.80 10.159.244.250.49198 49152 0 49152 0 > > TIME_WAIT > > Try > > eval $(netstat -an | awk -F '\.| +' -v OFS=. '/TIME_WAIT/{ > print "LOCALIP="$1,$2,$3,$4 > print "LOCALPORT="$5 > print "REMOTEIP="$6,$7,$8,$9 > print "REMOTEPORT="$10 > > }') Hi pk, Thanks for that - I gave that a shot and it came back with the following: $ eval $(netstat -an | awk -F '\.| +' -v OFS=. '/TIME_WAIT/{ > print "LOCALIP="$1,$2,$3,$4 > print "LOCALPORT="$5 > print "REMOTEIP="$6,$7,$8,$9 > print "REMOTEPORT="$10 > }') awk: syntax error near line 1 awk: bailing out near line 1 $ (should it matter, I'm on a Solaris 10 x64 server). Ciccio
From: pk on 3 Nov 2009 12:07 Ciccio wrote: > Thanks for that - I gave that a shot and it came back with the > following: > > $ eval $(netstat -an | awk -F '\.| +' -v OFS=. '/TIME_WAIT/{ >> print "LOCALIP="$1,$2,$3,$4 >> print "LOCALPORT="$5 >> print "REMOTEIP="$6,$7,$8,$9 >> print "REMOTEPORT="$10 >> }') > awk: syntax error near line 1 > awk: bailing out near line 1 > $ > > (should it matter, I'm on a Solaris 10 x64 server). Yes that was also indicated by the typical "bailing out" message you got from awk. Try using /usr/xpg4/bin/awk, which should be a better implementation.
From: Ciccio on 3 Nov 2009 12:17
On Nov 3, 5:07 pm, pk <p...(a)pk.invalid> wrote: > Ciccio wrote: > > Thanks for that - I gave that a shot and it came back with the > > following: > > > $ eval $(netstat -an | awk -F '\.| +' -v OFS=. '/TIME_WAIT/{ > >> print "LOCALIP="$1,$2,$3,$4 > >> print "LOCALPORT="$5 > >> print "REMOTEIP="$6,$7,$8,$9 > >> print "REMOTEPORT="$10 > >> }') > > awk: syntax error near line 1 > > awk: bailing out near line 1 > > $ > > > (should it matter, I'm on a Solaris 10 x64 server). > > Yes that was also indicated by the typical "bailing out" message you got > from awk. Try using /usr/xpg4/bin/awk, which should be a better > implementation. Ok, $ eval $(netstat -an | /usr/xpg4/bin/awk -F '\.| +' -v OFS=. '/ TIME_WAIT/{ print "LOCALIP="$1,$2,$3,$4 print "LOCALPORT="$5 print "REMOTEIP="$6,$7,$8,$9 print "REMOTEPORT="$10 }') no errors now, but no output either... Ciccio |