Egrep: conflicting matchers specified

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# 1  
Old 02-04-2020
Egrep: conflicting matchers specified

This bit of code works fine:

egrep -i '^rmcat' /etc/oratab |\
  awk -F\: '{print $1}'|\
while read ORACLE_SID

But when I modified it, thus:

egrep -v '^#' /etc/oratab |egrep -v '^$' | egrep -v '^listener' \
  awk -F\: '{print $1}'|\
while read ORACLE_SID

It produces the error

egrep: conflicting matchers specified

# 2  
Old 02-04-2020
Hi, a pipe appears to be missing:
egrep -v '^listener' |\

This User Gave Thanks to Scrutinizer For This Post:
# 3  
Old 02-04-2020
Missing pipe was it. I figured it would be something simple where I just needed another set of eyes. Thanks.
# 4  
Old 02-04-2020
You can consolidate
egrep -v '^#' /etc/oratab | egrep -v '^$'

egrep '^[^#]' /etc/oratab

And the whole thing into awk
awk -F: '/^[^#]/ && !/^listener/ {print $1}' /etc/oratab |
while read ORACLE_SID

Or into the shell
while IFS=":" read ORACLE_SID junk
  case $ORACLE_SID in
  ""|"#"*|listener*) continue ;;
done < /etc/oratab

Last edited by MadeInGermany; 02-05-2020 at 01:09 PM.. Reason: shell code needs IFS=":"
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