Using grep -v against a file ?

hcclnoodles · #1 (**permalink**) 02-24-2009

hi there I have a script which outputs hundreds of lines with a servername in each line

eg

Code:


# cat output.txt
server1,problem
server2,problem
server3,problem
server4,problem
server5,problem
server6,problem
server7,problem
server8,problem
...
...

this gets auto-emailed everyday, but our support guys dont want to recieve a list of all servers that have a problem. Whilst they are aware of the issues with, for example, server1 and server3, they dont want to be mailed every day about it, as such, id like to create a file with a list of servers to exclude from the output. eg

Code:

# cat exclude.txt
server1
server3

before emailing my output, id like to perform a kind of 'grep -v' against this file so that my support guys only get mailed about stuff that there not already aware of, so the output would be

Code:

server2,problem
server4,problem
server5,problem
server6,problem
server7,problem
server8,problem
...
...

Is there an easy way of doing this

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