Some "grep" help.

[octopus]

Hi

I need some suggestions...
I use

grep -E -m 1 "blabla"

to ensure only get first aswere in a command when get multiple answeres.
Now my question: if I want last answer and in multiple answeres, howe to accomplished that?


Thanks
Octopus

 

[Martineau]

I use

grep -E -m 1 "blabla"

to ensure only get first aswere in a command when get multiple answeres.
Now my question: if I want last answer and in multiple answeres, howe to accomplished that?

In lieu of processing/reading the file in reverse..

I don't think grep alone will provide the solution, but using a single external utility try

awk '/blabla/ {LAST=$0} END {print LAST}'

or grep plus an additional external utility solution

grep "blabla" | tail -n 1

 

[octopus]

In lieu of processing/reading the file in reverse..

grep "blabla" | tail -n 1

Thank you, this working fine. Tested awk couldn't get that working.

 

[Martineau]

Tested awk couldn't get that working.

Works for me...

echo Blabla         >awktest.txt
echo Blabla_second >>awktest.txt

grep Blabla awktest.txt

Blabla
Blabla_second

awk '/Blabla/ {LAST=$0} END {print LAST}' awktest.txt

Blabla_second

even this manky code works...

cat awktest.txt | awk '/Blabla/ {LAST=$0} END {print LAST}'

Blabla_second

 

[octopus]

Works for me...

echo Blabla         >awktest.txt
echo Blabla_second >>awktest.txt

grep Blabla awktest.txt
Blabla
Blabla_second

awk '/Blabla/ {LAST=$0} END {print LAST}' awktest.txt
Blabla_second

even this manky code works...

cat awktest.txt | awk '/Blabla/ {LAST=$0} END {print LAST}'
Blabla_second

Okay thanks
I get "awk" working also. Whis is preferred programming wise?

awk '/VERIFY OK: depth=0/ {LAST=$0} END {print LAST}' /tmp/vpnclient-1.log | cut -d ',' -f2 | cut -d "=" -f2
vpn63.prd.kista.ovpn.com