Linux command for finding a particular word and finding its number of occurrences for a particular date -

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i have log files roll out every day.

i need find out, error occurrences particular day (20/3/2014)

i need find out no of occurrences of word error particular day or set of days in log files , print errors in separate file.

and mail should sent details of errors.

egrep can lookup such occurrences , store them in file. expression below ocurrence of token error , print line token found.

egrep -i "\s*error\s*" your_file > stored_errors_file

you can redirect output of egrep file , count number of ocurrences with

wc -l stored_errors_file

i hope helps


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