Excluding multiple patterns with one grep command I was wondering if there is a best way to run the following command cat cisco.log-20151103.log | grep -v "90.192.142.138" | grep -v "PIX" | grep -v "Intrusion" I tried cat cisco.log-20151103.log | grep -v "90.192.142.138|PIX|Intrusion" but it doesn't work.

two other options


grep -v -e 90.192.142.138 -e PIX -e Intrusion cisco.log-20151103.log


and assuming fixed strings


grep -vF '90.192.142.138
PIX
Intrusion
' cisco.log-20151103.log