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Using egrep to output expressions which are not found

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Top Forums Shell Programming and Scripting Using egrep to output expressions which are not found
# 15  
Old 02-16-2013
This one will output the missing pattern
Code:
$ echo 'Schema Area|stock|route_drop|test123' | tr '|' '\n' > tmp; grep -Eiof tmp file | grep -v -f- tmp; rm tmp
test123

And, this is DGPickett's proposal, slightly simplified:
Code:
while read l
  do case "$l" in
        (*"Schema Area"*)       (( ct1++ ));;
        (*stock*)               (( ct2++ ));;
        (*route_drop*)          (( ct3++ ));;
        (*test123*)             (( ct4++ ));;
     esac
  done < file

Last edited by RudiC; 02-16-2013 at 07:24 AM..
# 16  
Old 02-17-2013
Just remember that if a line has pattern 1, you will miss all other patterns on that line.
# 17  
Old 02-17-2013
Oh ... yes, you are right. In bash, appending a & the ;; making it read ;;& would help. This may not be available in other shells.
Last edited by RudiC; 02-17-2013 at 01:04 PM..
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