如何在Shell脚本中将uniq命令的输出分配给变量

Question

I am writing a script to check the status of WAS server to confirm if the server is STARTED or FAILED to start. The server has 2 JVMs. So to check that either of the JVMs are up or not I am using the uniq command.

Lets say JVM1 got FAILED and JVM2 is STARTED, so the below command

sh /home/wasprofile/`hostname`/bin/serverStatus.sh -all > /tmp/ServerState

grep "Application Server" /tmp/ServerState|awk '{print $7}'|uniq

will show the output as:

FAILED
STARTED

So now how should i assign this output to two different variables in runtime ?? I mean something like this:

a=FAILED
b=STARTED

Any help on this is really appreciated.

Answer 1

You can use read with process substitution:

read a b < <(awk '/Application Server/ && !seen[$7]++{printf "%s ", $7}' /tmp/ServerState)

PS: You can avoid grep and uniq both using awk.