UNIX for Advanced & Expert Users

Can you please help me reg below issue???

All errors are included inside ‘IGNORE_ERROR.txt'
For.e.g End user will just put all errors inside IGNORE_ERROR.txt' file which they don't want...
ERROR1
ERROR2
ERROR3


Now script should search ERROR1,ERROR2,ERROR3 inside LOG.txt and delete all these lines. Using below script only lines which contain ERROR3 is deleting from LOG.txt
FILE=/home/spm/ptc/scripts/IGNORE_ERROR.txt

##Script-

UNIQUE='-={GR}=-'
#
if [ -z "$FILE" ]; then
exit;
fi;
#
for LINE in `sed "s/ /$UNIQUE/g" $FILE`; do
LINE=`echo $LINE | sed "s/$UNIQUE/ /g"`
echo $LINE >>
sed -e "/"$LINE"/d" /home/spm/ptc/scripts/LOG.txt > /home/spm/ptc/scripts /"RequiredERROR-$SERVER_NAME-`date '+%d-%m-%Y'`.log"
done

dont hijack others thread.. anyway below the code

Code:

$ xargs < IGNORE_ERROR.txt|sed 's, ,|,g;s,^,egrep -v \",g;s,$,\" inputfile,g'|sh

I'm in Perth at the moment and won't get back to Adelaide until the end of September, but I think I have an actual example from a Unix Primer (circa 1990) identical to the original one presented... I'll get back to you in October (if I remember)...

Obviously limitations exist when using grave accents... the user should be aware of them or suffer the consequences.

Either that, or had the intuitive sense to know when using it is a bad idea.

I've answered several threads on this forum about mysterious problems with the "for x in `cat foo`" design where data had been mysteriously lost or ignored. They hit the limit, of course -- the limit's pretty small on some systems. Agreed. Unfortunately, they can get away with it for quite a long time until the habit becomes ingrained. Most people who use it don't seem to understand the implications, namely, the backticks have to finish first -- they seem to think of them like pipes. I saw a poster suggest using it to process data already known to be a 40-gig flatfile...

When nothing is known about the size of the file, `cat foo` should be discouraged, I feel. Even for small files, I see little reason beyond habit to use it...